Merge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (39 commits)
i915/gtt: fix ordering causing DMAR errors on object teardown.
i915/gtt: fix ordering issues with status setup and DMAR
drm/i915/execbuffer: Reorder binding of objects to favour restrictions
drm/i915: If we hit OOM when allocating GTT pages, clear the aperture
drm/i915/evict: Ensure we completely cleanup on failure
drm/i915/execbuffer: Correctly clear the current object list upon EFAULT
drm/i915/debugfs: Show all objects in the gtt
drm/i915: Record AGP memory type upon error
drm/i915: Periodically flush the active lists and requests
drm/i915/gtt: Unmap the PCI pages after unbinding them from the GTT
drm/i915: Record the error batchbuffer on each ring
drm/i915: Include TLB miss overhead for computing WM
drm/i915: Propagate error from flushing the ring
drm/i915: detect & report PCH display error interrupts
drm/i915: cleanup rc6 code
drm/i915: fix rc6 enabling around suspend/resume
drm/i915: re-enable rc6 support for Ironlake+
drm/i915: Make the ring IMR handling private
drm/i915/ringbuffer: Simplify the ring irq refcounting
drm/i915/debugfs: Show the per-ring IMR
...
diff --git a/Documentation/filesystems/ntfs.txt b/Documentation/filesystems/ntfs.txt
index ac2a261..6ef8cf3 100644
--- a/Documentation/filesystems/ntfs.txt
+++ b/Documentation/filesystems/ntfs.txt
@@ -457,6 +457,9 @@
Note, a technical ChangeLog aimed at kernel hackers is in fs/ntfs/ChangeLog.
+2.1.30:
+ - Fix writev() (it kept writing the first segment over and over again
+ instead of moving onto subsequent segments).
2.1.29:
- Fix a deadlock when mounting read-write.
2.1.28:
diff --git a/MAINTAINERS b/MAINTAINERS
index 42f991e..64d7621 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4383,11 +4383,11 @@
F: drivers/scsi/nsp32*
NTFS FILESYSTEM
-M: Anton Altaparmakov <aia21@cantab.net>
+M: Anton Altaparmakov <anton@tuxera.com>
L: linux-ntfs-dev@lists.sourceforge.net
-W: http://www.linux-ntfs.org/
+W: http://www.tuxera.com/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/aia21/ntfs-2.6.git
-S: Maintained
+S: Supported
F: Documentation/filesystems/ntfs.txt
F: fs/ntfs/
diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig
index 4b9359a..83c32cb 100644
--- a/drivers/block/Kconfig
+++ b/drivers/block/Kconfig
@@ -464,6 +464,7 @@
tristate "Xen virtual block device support"
depends on XEN
default y
+ select XEN_XENBUS_FRONTEND
help
This driver implements the front-end of the Xen virtual
block device driver. It communicates with a back-end driver
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index ff652c7..4c8bfc9 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -2963,6 +2963,7 @@
config XEN_NETDEV_FRONTEND
tristate "Xen network device frontend driver"
depends on XEN
+ select XEN_XENBUS_FRONTEND
default y
help
The network device frontend driver allows the kernel to
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index 5b1630e..a9523fd 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -45,6 +45,7 @@
depends on PCI && X86 && XEN
select HOTPLUG
select PCI_XEN
+ select XEN_XENBUS_FRONTEND
default y
help
The PCI device frontend driver allows the kernel to import arbitrary
diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig
index 6e6180c..5a48ce9 100644
--- a/drivers/xen/Kconfig
+++ b/drivers/xen/Kconfig
@@ -29,6 +29,14 @@
firing.
If in doubt, say yes.
+config XEN_BACKEND
+ bool "Backend driver support"
+ depends on XEN_DOM0
+ default y
+ help
+ Support for backend device drivers that provide I/O services
+ to other virtual machines.
+
config XENFS
tristate "Xen filesystem"
default y
@@ -62,6 +70,9 @@
virtual environment, /sys/hypervisor will still be present,
but will have no xen contents.
+config XEN_XENBUS_FRONTEND
+ tristate
+
config XEN_PLATFORM_PCI
tristate "xen platform pci device driver"
depends on XEN_PVHVM
diff --git a/drivers/xen/xenbus/Makefile b/drivers/xen/xenbus/Makefile
index 5571f5b..8dca685 100644
--- a/drivers/xen/xenbus/Makefile
+++ b/drivers/xen/xenbus/Makefile
@@ -5,3 +5,8 @@
xenbus-objs += xenbus_comms.o
xenbus-objs += xenbus_xs.o
xenbus-objs += xenbus_probe.o
+
+xenbus-be-objs-$(CONFIG_XEN_BACKEND) += xenbus_probe_backend.o
+xenbus-objs += $(xenbus-be-objs-y)
+
+obj-$(CONFIG_XEN_XENBUS_FRONTEND) += xenbus_probe_frontend.o
diff --git a/drivers/xen/xenbus/xenbus_probe.c b/drivers/xen/xenbus/xenbus_probe.c
index deb9c4b..baa65e7 100644
--- a/drivers/xen/xenbus/xenbus_probe.c
+++ b/drivers/xen/xenbus/xenbus_probe.c
@@ -56,7 +56,6 @@
#include <xen/events.h>
#include <xen/page.h>
-#include <xen/platform_pci.h>
#include <xen/hvm.h>
#include "xenbus_comms.h"
@@ -73,15 +72,6 @@
static BLOCKING_NOTIFIER_HEAD(xenstore_chain);
-static void wait_for_devices(struct xenbus_driver *xendrv);
-
-static int xenbus_probe_frontend(const char *type, const char *name);
-
-static void xenbus_dev_shutdown(struct device *_dev);
-
-static int xenbus_dev_suspend(struct device *dev, pm_message_t state);
-static int xenbus_dev_resume(struct device *dev);
-
/* If something in array of ids matches this device, return it. */
static const struct xenbus_device_id *
match_device(const struct xenbus_device_id *arr, struct xenbus_device *dev)
@@ -102,34 +92,7 @@
return match_device(drv->ids, to_xenbus_device(_dev)) != NULL;
}
-
-static int xenbus_uevent(struct device *_dev, struct kobj_uevent_env *env)
-{
- struct xenbus_device *dev = to_xenbus_device(_dev);
-
- if (add_uevent_var(env, "MODALIAS=xen:%s", dev->devicetype))
- return -ENOMEM;
-
- return 0;
-}
-
-/* device/<type>/<id> => <type>-<id> */
-static int frontend_bus_id(char bus_id[XEN_BUS_ID_SIZE], const char *nodename)
-{
- nodename = strchr(nodename, '/');
- if (!nodename || strlen(nodename + 1) >= XEN_BUS_ID_SIZE) {
- printk(KERN_WARNING "XENBUS: bad frontend %s\n", nodename);
- return -EINVAL;
- }
-
- strlcpy(bus_id, nodename + 1, XEN_BUS_ID_SIZE);
- if (!strchr(bus_id, '/')) {
- printk(KERN_WARNING "XENBUS: bus_id %s no slash\n", bus_id);
- return -EINVAL;
- }
- *strchr(bus_id, '/') = '-';
- return 0;
-}
+EXPORT_SYMBOL_GPL(xenbus_match);
static void free_otherend_details(struct xenbus_device *dev)
@@ -149,7 +112,30 @@
}
-int read_otherend_details(struct xenbus_device *xendev,
+static int talk_to_otherend(struct xenbus_device *dev)
+{
+ struct xenbus_driver *drv = to_xenbus_driver(dev->dev.driver);
+
+ free_otherend_watch(dev);
+ free_otherend_details(dev);
+
+ return drv->read_otherend_details(dev);
+}
+
+
+
+static int watch_otherend(struct xenbus_device *dev)
+{
+ struct xen_bus_type *bus =
+ container_of(dev->dev.bus, struct xen_bus_type, bus);
+
+ return xenbus_watch_pathfmt(dev, &dev->otherend_watch,
+ bus->otherend_changed,
+ "%s/%s", dev->otherend, "state");
+}
+
+
+int xenbus_read_otherend_details(struct xenbus_device *xendev,
char *id_node, char *path_node)
{
int err = xenbus_gather(XBT_NIL, xendev->nodename,
@@ -174,39 +160,11 @@
return 0;
}
+EXPORT_SYMBOL_GPL(xenbus_read_otherend_details);
-
-static int read_backend_details(struct xenbus_device *xendev)
-{
- return read_otherend_details(xendev, "backend-id", "backend");
-}
-
-static struct device_attribute xenbus_dev_attrs[] = {
- __ATTR_NULL
-};
-
-/* Bus type for frontend drivers. */
-static struct xen_bus_type xenbus_frontend = {
- .root = "device",
- .levels = 2, /* device/type/<id> */
- .get_bus_id = frontend_bus_id,
- .probe = xenbus_probe_frontend,
- .bus = {
- .name = "xen",
- .match = xenbus_match,
- .uevent = xenbus_uevent,
- .probe = xenbus_dev_probe,
- .remove = xenbus_dev_remove,
- .shutdown = xenbus_dev_shutdown,
- .dev_attrs = xenbus_dev_attrs,
-
- .suspend = xenbus_dev_suspend,
- .resume = xenbus_dev_resume,
- },
-};
-
-static void otherend_changed(struct xenbus_watch *watch,
- const char **vec, unsigned int len)
+void xenbus_otherend_changed(struct xenbus_watch *watch,
+ const char **vec, unsigned int len,
+ int ignore_on_shutdown)
{
struct xenbus_device *dev =
container_of(watch, struct xenbus_device, otherend_watch);
@@ -234,11 +192,7 @@
* work that can fail e.g., when the rootfs is gone.
*/
if (system_state > SYSTEM_RUNNING) {
- struct xen_bus_type *bus = bus;
- bus = container_of(dev->dev.bus, struct xen_bus_type, bus);
- /* If we're frontend, drive the state machine to Closed. */
- /* This should cause the backend to release our resources. */
- if ((bus == &xenbus_frontend) && (state == XenbusStateClosing))
+ if (ignore_on_shutdown && (state == XenbusStateClosing))
xenbus_frontend_closed(dev);
return;
}
@@ -246,25 +200,7 @@
if (drv->otherend_changed)
drv->otherend_changed(dev, state);
}
-
-
-static int talk_to_otherend(struct xenbus_device *dev)
-{
- struct xenbus_driver *drv = to_xenbus_driver(dev->dev.driver);
-
- free_otherend_watch(dev);
- free_otherend_details(dev);
-
- return drv->read_otherend_details(dev);
-}
-
-
-static int watch_otherend(struct xenbus_device *dev)
-{
- return xenbus_watch_pathfmt(dev, &dev->otherend_watch, otherend_changed,
- "%s/%s", dev->otherend, "state");
-}
-
+EXPORT_SYMBOL_GPL(xenbus_otherend_changed);
int xenbus_dev_probe(struct device *_dev)
{
@@ -308,8 +244,9 @@
fail:
xenbus_dev_error(dev, err, "xenbus_dev_probe on %s", dev->nodename);
xenbus_switch_state(dev, XenbusStateClosed);
- return -ENODEV;
+ return err;
}
+EXPORT_SYMBOL_GPL(xenbus_dev_probe);
int xenbus_dev_remove(struct device *_dev)
{
@@ -327,8 +264,9 @@
xenbus_switch_state(dev, XenbusStateClosed);
return 0;
}
+EXPORT_SYMBOL_GPL(xenbus_dev_remove);
-static void xenbus_dev_shutdown(struct device *_dev)
+void xenbus_dev_shutdown(struct device *_dev)
{
struct xenbus_device *dev = to_xenbus_device(_dev);
unsigned long timeout = 5*HZ;
@@ -349,6 +287,7 @@
out:
put_device(&dev->dev);
}
+EXPORT_SYMBOL_GPL(xenbus_dev_shutdown);
int xenbus_register_driver_common(struct xenbus_driver *drv,
struct xen_bus_type *bus,
@@ -362,25 +301,7 @@
return driver_register(&drv->driver);
}
-
-int __xenbus_register_frontend(struct xenbus_driver *drv,
- struct module *owner, const char *mod_name)
-{
- int ret;
-
- drv->read_otherend_details = read_backend_details;
-
- ret = xenbus_register_driver_common(drv, &xenbus_frontend,
- owner, mod_name);
- if (ret)
- return ret;
-
- /* If this driver is loaded as a module wait for devices to attach. */
- wait_for_devices(drv);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(__xenbus_register_frontend);
+EXPORT_SYMBOL_GPL(xenbus_register_driver_common);
void xenbus_unregister_driver(struct xenbus_driver *drv)
{
@@ -551,24 +472,7 @@
kfree(xendev);
return err;
}
-
-/* device/<typename>/<name> */
-static int xenbus_probe_frontend(const char *type, const char *name)
-{
- char *nodename;
- int err;
-
- nodename = kasprintf(GFP_KERNEL, "%s/%s/%s",
- xenbus_frontend.root, type, name);
- if (!nodename)
- return -ENOMEM;
-
- DPRINTK("%s", nodename);
-
- err = xenbus_probe_node(&xenbus_frontend, type, nodename);
- kfree(nodename);
- return err;
-}
+EXPORT_SYMBOL_GPL(xenbus_probe_node);
static int xenbus_probe_device_type(struct xen_bus_type *bus, const char *type)
{
@@ -582,10 +486,11 @@
return PTR_ERR(dir);
for (i = 0; i < dir_n; i++) {
- err = bus->probe(type, dir[i]);
+ err = bus->probe(bus, type, dir[i]);
if (err)
break;
}
+
kfree(dir);
return err;
}
@@ -605,9 +510,11 @@
if (err)
break;
}
+
kfree(dir);
return err;
}
+EXPORT_SYMBOL_GPL(xenbus_probe_devices);
static unsigned int char_count(const char *str, char c)
{
@@ -670,32 +577,18 @@
}
EXPORT_SYMBOL_GPL(xenbus_dev_changed);
-static void frontend_changed(struct xenbus_watch *watch,
- const char **vec, unsigned int len)
-{
- DPRINTK("");
-
- xenbus_dev_changed(vec[XS_WATCH_PATH], &xenbus_frontend);
-}
-
-/* We watch for devices appearing and vanishing. */
-static struct xenbus_watch fe_watch = {
- .node = "device",
- .callback = frontend_changed,
-};
-
-static int xenbus_dev_suspend(struct device *dev, pm_message_t state)
+int xenbus_dev_suspend(struct device *dev, pm_message_t state)
{
int err = 0;
struct xenbus_driver *drv;
- struct xenbus_device *xdev;
+ struct xenbus_device *xdev
+ = container_of(dev, struct xenbus_device, dev);
- DPRINTK("");
+ DPRINTK("%s", xdev->nodename);
if (dev->driver == NULL)
return 0;
drv = to_xenbus_driver(dev->driver);
- xdev = container_of(dev, struct xenbus_device, dev);
if (drv->suspend)
err = drv->suspend(xdev, state);
if (err)
@@ -703,21 +596,20 @@
"xenbus: suspend %s failed: %i\n", dev_name(dev), err);
return 0;
}
+EXPORT_SYMBOL_GPL(xenbus_dev_suspend);
-static int xenbus_dev_resume(struct device *dev)
+int xenbus_dev_resume(struct device *dev)
{
int err;
struct xenbus_driver *drv;
- struct xenbus_device *xdev;
+ struct xenbus_device *xdev
+ = container_of(dev, struct xenbus_device, dev);
- DPRINTK("");
+ DPRINTK("%s", xdev->nodename);
if (dev->driver == NULL)
return 0;
-
drv = to_xenbus_driver(dev->driver);
- xdev = container_of(dev, struct xenbus_device, dev);
-
err = talk_to_otherend(xdev);
if (err) {
printk(KERN_WARNING
@@ -748,6 +640,7 @@
return 0;
}
+EXPORT_SYMBOL_GPL(xenbus_dev_resume);
/* A flag to determine if xenstored is 'ready' (i.e. has started) */
int xenstored_ready = 0;
@@ -776,11 +669,6 @@
{
xenstored_ready = 1;
- /* Enumerate devices in xenstore and watch for changes. */
- xenbus_probe_devices(&xenbus_frontend);
- register_xenbus_watch(&fe_watch);
- xenbus_backend_probe_and_watch();
-
/* Notify others that xenstore is up */
blocking_notifier_call_chain(&xenstore_chain, 0, NULL);
}
@@ -809,16 +697,7 @@
err = -ENODEV;
if (!xen_domain())
- goto out_error;
-
- /* Register ourselves with the kernel bus subsystem */
- err = bus_register(&xenbus_frontend.bus);
- if (err)
- goto out_error;
-
- err = xenbus_backend_bus_register();
- if (err)
- goto out_unreg_front;
+ return err;
/*
* Domain0 doesn't have a store_evtchn or store_mfn yet.
@@ -874,7 +753,7 @@
if (err) {
printk(KERN_WARNING
"XENBUS: Error initializing xenstore comms: %i\n", err);
- goto out_unreg_back;
+ goto out_error;
}
#ifdef CONFIG_XEN_COMPAT_XENFS
@@ -887,133 +766,13 @@
return 0;
- out_unreg_back:
- xenbus_backend_bus_unregister();
-
- out_unreg_front:
- bus_unregister(&xenbus_frontend.bus);
-
out_error:
if (page != 0)
free_page(page);
+
return err;
}
postcore_initcall(xenbus_init);
MODULE_LICENSE("GPL");
-
-static int is_device_connecting(struct device *dev, void *data)
-{
- struct xenbus_device *xendev = to_xenbus_device(dev);
- struct device_driver *drv = data;
- struct xenbus_driver *xendrv;
-
- /*
- * A device with no driver will never connect. We care only about
- * devices which should currently be in the process of connecting.
- */
- if (!dev->driver)
- return 0;
-
- /* Is this search limited to a particular driver? */
- if (drv && (dev->driver != drv))
- return 0;
-
- xendrv = to_xenbus_driver(dev->driver);
- return (xendev->state < XenbusStateConnected ||
- (xendev->state == XenbusStateConnected &&
- xendrv->is_ready && !xendrv->is_ready(xendev)));
-}
-
-static int exists_connecting_device(struct device_driver *drv)
-{
- return bus_for_each_dev(&xenbus_frontend.bus, NULL, drv,
- is_device_connecting);
-}
-
-static int print_device_status(struct device *dev, void *data)
-{
- struct xenbus_device *xendev = to_xenbus_device(dev);
- struct device_driver *drv = data;
-
- /* Is this operation limited to a particular driver? */
- if (drv && (dev->driver != drv))
- return 0;
-
- if (!dev->driver) {
- /* Information only: is this too noisy? */
- printk(KERN_INFO "XENBUS: Device with no driver: %s\n",
- xendev->nodename);
- } else if (xendev->state < XenbusStateConnected) {
- enum xenbus_state rstate = XenbusStateUnknown;
- if (xendev->otherend)
- rstate = xenbus_read_driver_state(xendev->otherend);
- printk(KERN_WARNING "XENBUS: Timeout connecting "
- "to device: %s (local state %d, remote state %d)\n",
- xendev->nodename, xendev->state, rstate);
- }
-
- return 0;
-}
-
-/* We only wait for device setup after most initcalls have run. */
-static int ready_to_wait_for_devices;
-
-/*
- * On a 5-minute timeout, wait for all devices currently configured. We need
- * to do this to guarantee that the filesystems and / or network devices
- * needed for boot are available, before we can allow the boot to proceed.
- *
- * This needs to be on a late_initcall, to happen after the frontend device
- * drivers have been initialised, but before the root fs is mounted.
- *
- * A possible improvement here would be to have the tools add a per-device
- * flag to the store entry, indicating whether it is needed at boot time.
- * This would allow people who knew what they were doing to accelerate their
- * boot slightly, but of course needs tools or manual intervention to set up
- * those flags correctly.
- */
-static void wait_for_devices(struct xenbus_driver *xendrv)
-{
- unsigned long start = jiffies;
- struct device_driver *drv = xendrv ? &xendrv->driver : NULL;
- unsigned int seconds_waited = 0;
-
- if (!ready_to_wait_for_devices || !xen_domain())
- return;
-
- while (exists_connecting_device(drv)) {
- if (time_after(jiffies, start + (seconds_waited+5)*HZ)) {
- if (!seconds_waited)
- printk(KERN_WARNING "XENBUS: Waiting for "
- "devices to initialise: ");
- seconds_waited += 5;
- printk("%us...", 300 - seconds_waited);
- if (seconds_waited == 300)
- break;
- }
-
- schedule_timeout_interruptible(HZ/10);
- }
-
- if (seconds_waited)
- printk("\n");
-
- bus_for_each_dev(&xenbus_frontend.bus, NULL, drv,
- print_device_status);
-}
-
-#ifndef MODULE
-static int __init boot_wait_for_devices(void)
-{
- if (xen_hvm_domain() && !xen_platform_pci_unplug)
- return -ENODEV;
-
- ready_to_wait_for_devices = 1;
- wait_for_devices(NULL);
- return 0;
-}
-
-late_initcall(boot_wait_for_devices);
-#endif
diff --git a/drivers/xen/xenbus/xenbus_probe.h b/drivers/xen/xenbus/xenbus_probe.h
index 6c5e318..2466581 100644
--- a/drivers/xen/xenbus/xenbus_probe.h
+++ b/drivers/xen/xenbus/xenbus_probe.h
@@ -36,26 +36,15 @@
#define XEN_BUS_ID_SIZE 20
-#ifdef CONFIG_XEN_BACKEND
-extern void xenbus_backend_suspend(int (*fn)(struct device *, void *));
-extern void xenbus_backend_resume(int (*fn)(struct device *, void *));
-extern void xenbus_backend_probe_and_watch(void);
-extern int xenbus_backend_bus_register(void);
-extern void xenbus_backend_bus_unregister(void);
-#else
-static inline void xenbus_backend_suspend(int (*fn)(struct device *, void *)) {}
-static inline void xenbus_backend_resume(int (*fn)(struct device *, void *)) {}
-static inline void xenbus_backend_probe_and_watch(void) {}
-static inline int xenbus_backend_bus_register(void) { return 0; }
-static inline void xenbus_backend_bus_unregister(void) {}
-#endif
-
struct xen_bus_type
{
char *root;
unsigned int levels;
int (*get_bus_id)(char bus_id[XEN_BUS_ID_SIZE], const char *nodename);
- int (*probe)(const char *type, const char *dir);
+ int (*probe)(struct xen_bus_type *bus, const char *type,
+ const char *dir);
+ void (*otherend_changed)(struct xenbus_watch *watch, const char **vec,
+ unsigned int len);
struct bus_type bus;
};
@@ -73,4 +62,16 @@
extern void xenbus_dev_changed(const char *node, struct xen_bus_type *bus);
+extern void xenbus_dev_shutdown(struct device *_dev);
+
+extern int xenbus_dev_suspend(struct device *dev, pm_message_t state);
+extern int xenbus_dev_resume(struct device *dev);
+
+extern void xenbus_otherend_changed(struct xenbus_watch *watch,
+ const char **vec, unsigned int len,
+ int ignore_on_shutdown);
+
+extern int xenbus_read_otherend_details(struct xenbus_device *xendev,
+ char *id_node, char *path_node);
+
#endif
diff --git a/drivers/xen/xenbus/xenbus_probe_backend.c b/drivers/xen/xenbus/xenbus_probe_backend.c
new file mode 100644
index 0000000..6cf467b
--- /dev/null
+++ b/drivers/xen/xenbus/xenbus_probe_backend.c
@@ -0,0 +1,276 @@
+/******************************************************************************
+ * Talks to Xen Store to figure out what devices we have (backend half).
+ *
+ * Copyright (C) 2005 Rusty Russell, IBM Corporation
+ * Copyright (C) 2005 Mike Wray, Hewlett-Packard
+ * Copyright (C) 2005, 2006 XenSource Ltd
+ * Copyright (C) 2007 Solarflare Communications, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation; or, when distributed
+ * separately from the Linux kernel or incorporated into other
+ * software packages, subject to the following license:
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this source file (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy, modify,
+ * merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#define DPRINTK(fmt, args...) \
+ pr_debug("xenbus_probe (%s:%d) " fmt ".\n", \
+ __func__, __LINE__, ##args)
+
+#include <linux/kernel.h>
+#include <linux/err.h>
+#include <linux/string.h>
+#include <linux/ctype.h>
+#include <linux/fcntl.h>
+#include <linux/mm.h>
+#include <linux/notifier.h>
+
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/xen/hypervisor.h>
+#include <asm/hypervisor.h>
+#include <xen/xenbus.h>
+#include <xen/features.h>
+
+#include "xenbus_comms.h"
+#include "xenbus_probe.h"
+
+/* backend/<type>/<fe-uuid>/<id> => <type>-<fe-domid>-<id> */
+static int backend_bus_id(char bus_id[XEN_BUS_ID_SIZE], const char *nodename)
+{
+ int domid, err;
+ const char *devid, *type, *frontend;
+ unsigned int typelen;
+
+ type = strchr(nodename, '/');
+ if (!type)
+ return -EINVAL;
+ type++;
+ typelen = strcspn(type, "/");
+ if (!typelen || type[typelen] != '/')
+ return -EINVAL;
+
+ devid = strrchr(nodename, '/') + 1;
+
+ err = xenbus_gather(XBT_NIL, nodename, "frontend-id", "%i", &domid,
+ "frontend", NULL, &frontend,
+ NULL);
+ if (err)
+ return err;
+ if (strlen(frontend) == 0)
+ err = -ERANGE;
+ if (!err && !xenbus_exists(XBT_NIL, frontend, ""))
+ err = -ENOENT;
+ kfree(frontend);
+
+ if (err)
+ return err;
+
+ if (snprintf(bus_id, XEN_BUS_ID_SIZE, "%.*s-%i-%s",
+ typelen, type, domid, devid) >= XEN_BUS_ID_SIZE)
+ return -ENOSPC;
+ return 0;
+}
+
+static int xenbus_uevent_backend(struct device *dev,
+ struct kobj_uevent_env *env)
+{
+ struct xenbus_device *xdev;
+ struct xenbus_driver *drv;
+ struct xen_bus_type *bus;
+
+ DPRINTK("");
+
+ if (dev == NULL)
+ return -ENODEV;
+
+ xdev = to_xenbus_device(dev);
+ bus = container_of(xdev->dev.bus, struct xen_bus_type, bus);
+ if (xdev == NULL)
+ return -ENODEV;
+
+ /* stuff we want to pass to /sbin/hotplug */
+ if (add_uevent_var(env, "XENBUS_TYPE=%s", xdev->devicetype))
+ return -ENOMEM;
+
+ if (add_uevent_var(env, "XENBUS_PATH=%s", xdev->nodename))
+ return -ENOMEM;
+
+ if (add_uevent_var(env, "XENBUS_BASE_PATH=%s", bus->root))
+ return -ENOMEM;
+
+ if (dev->driver) {
+ drv = to_xenbus_driver(dev->driver);
+ if (drv && drv->uevent)
+ return drv->uevent(xdev, env);
+ }
+
+ return 0;
+}
+
+/* backend/<typename>/<frontend-uuid>/<name> */
+static int xenbus_probe_backend_unit(struct xen_bus_type *bus,
+ const char *dir,
+ const char *type,
+ const char *name)
+{
+ char *nodename;
+ int err;
+
+ nodename = kasprintf(GFP_KERNEL, "%s/%s", dir, name);
+ if (!nodename)
+ return -ENOMEM;
+
+ DPRINTK("%s\n", nodename);
+
+ err = xenbus_probe_node(bus, type, nodename);
+ kfree(nodename);
+ return err;
+}
+
+/* backend/<typename>/<frontend-domid> */
+static int xenbus_probe_backend(struct xen_bus_type *bus, const char *type,
+ const char *domid)
+{
+ char *nodename;
+ int err = 0;
+ char **dir;
+ unsigned int i, dir_n = 0;
+
+ DPRINTK("");
+
+ nodename = kasprintf(GFP_KERNEL, "%s/%s/%s", bus->root, type, domid);
+ if (!nodename)
+ return -ENOMEM;
+
+ dir = xenbus_directory(XBT_NIL, nodename, "", &dir_n);
+ if (IS_ERR(dir)) {
+ kfree(nodename);
+ return PTR_ERR(dir);
+ }
+
+ for (i = 0; i < dir_n; i++) {
+ err = xenbus_probe_backend_unit(bus, nodename, type, dir[i]);
+ if (err)
+ break;
+ }
+ kfree(dir);
+ kfree(nodename);
+ return err;
+}
+
+static void frontend_changed(struct xenbus_watch *watch,
+ const char **vec, unsigned int len)
+{
+ xenbus_otherend_changed(watch, vec, len, 0);
+}
+
+static struct device_attribute xenbus_backend_dev_attrs[] = {
+ __ATTR_NULL
+};
+
+static struct xen_bus_type xenbus_backend = {
+ .root = "backend",
+ .levels = 3, /* backend/type/<frontend>/<id> */
+ .get_bus_id = backend_bus_id,
+ .probe = xenbus_probe_backend,
+ .otherend_changed = frontend_changed,
+ .bus = {
+ .name = "xen-backend",
+ .match = xenbus_match,
+ .uevent = xenbus_uevent_backend,
+ .probe = xenbus_dev_probe,
+ .remove = xenbus_dev_remove,
+ .shutdown = xenbus_dev_shutdown,
+ .dev_attrs = xenbus_backend_dev_attrs,
+ },
+};
+
+static void backend_changed(struct xenbus_watch *watch,
+ const char **vec, unsigned int len)
+{
+ DPRINTK("");
+
+ xenbus_dev_changed(vec[XS_WATCH_PATH], &xenbus_backend);
+}
+
+static struct xenbus_watch be_watch = {
+ .node = "backend",
+ .callback = backend_changed,
+};
+
+static int read_frontend_details(struct xenbus_device *xendev)
+{
+ return xenbus_read_otherend_details(xendev, "frontend-id", "frontend");
+}
+
+int xenbus_dev_is_online(struct xenbus_device *dev)
+{
+ int rc, val;
+
+ rc = xenbus_scanf(XBT_NIL, dev->nodename, "online", "%d", &val);
+ if (rc != 1)
+ val = 0; /* no online node present */
+
+ return val;
+}
+EXPORT_SYMBOL_GPL(xenbus_dev_is_online);
+
+int __xenbus_register_backend(struct xenbus_driver *drv,
+ struct module *owner, const char *mod_name)
+{
+ drv->read_otherend_details = read_frontend_details;
+
+ return xenbus_register_driver_common(drv, &xenbus_backend,
+ owner, mod_name);
+}
+EXPORT_SYMBOL_GPL(__xenbus_register_backend);
+
+static int backend_probe_and_watch(struct notifier_block *notifier,
+ unsigned long event,
+ void *data)
+{
+ /* Enumerate devices in xenstore and watch for changes. */
+ xenbus_probe_devices(&xenbus_backend);
+ register_xenbus_watch(&be_watch);
+
+ return NOTIFY_DONE;
+}
+
+static int __init xenbus_probe_backend_init(void)
+{
+ static struct notifier_block xenstore_notifier = {
+ .notifier_call = backend_probe_and_watch
+ };
+ int err;
+
+ DPRINTK("");
+
+ /* Register ourselves with the kernel bus subsystem */
+ err = bus_register(&xenbus_backend.bus);
+ if (err)
+ return err;
+
+ register_xenstore_notifier(&xenstore_notifier);
+
+ return 0;
+}
+subsys_initcall(xenbus_probe_backend_init);
diff --git a/drivers/xen/xenbus/xenbus_probe_frontend.c b/drivers/xen/xenbus/xenbus_probe_frontend.c
new file mode 100644
index 0000000..5bcc2d6
--- /dev/null
+++ b/drivers/xen/xenbus/xenbus_probe_frontend.c
@@ -0,0 +1,294 @@
+#define DPRINTK(fmt, args...) \
+ pr_debug("xenbus_probe (%s:%d) " fmt ".\n", \
+ __func__, __LINE__, ##args)
+
+#include <linux/kernel.h>
+#include <linux/err.h>
+#include <linux/string.h>
+#include <linux/ctype.h>
+#include <linux/fcntl.h>
+#include <linux/mm.h>
+#include <linux/proc_fs.h>
+#include <linux/notifier.h>
+#include <linux/kthread.h>
+#include <linux/mutex.h>
+#include <linux/io.h>
+
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/xen/hypervisor.h>
+#include <xen/xenbus.h>
+#include <xen/events.h>
+#include <xen/page.h>
+
+#include <xen/platform_pci.h>
+
+#include "xenbus_comms.h"
+#include "xenbus_probe.h"
+
+
+/* device/<type>/<id> => <type>-<id> */
+static int frontend_bus_id(char bus_id[XEN_BUS_ID_SIZE], const char *nodename)
+{
+ nodename = strchr(nodename, '/');
+ if (!nodename || strlen(nodename + 1) >= XEN_BUS_ID_SIZE) {
+ printk(KERN_WARNING "XENBUS: bad frontend %s\n", nodename);
+ return -EINVAL;
+ }
+
+ strlcpy(bus_id, nodename + 1, XEN_BUS_ID_SIZE);
+ if (!strchr(bus_id, '/')) {
+ printk(KERN_WARNING "XENBUS: bus_id %s no slash\n", bus_id);
+ return -EINVAL;
+ }
+ *strchr(bus_id, '/') = '-';
+ return 0;
+}
+
+/* device/<typename>/<name> */
+static int xenbus_probe_frontend(struct xen_bus_type *bus, const char *type,
+ const char *name)
+{
+ char *nodename;
+ int err;
+
+ nodename = kasprintf(GFP_KERNEL, "%s/%s/%s", bus->root, type, name);
+ if (!nodename)
+ return -ENOMEM;
+
+ DPRINTK("%s", nodename);
+
+ err = xenbus_probe_node(bus, type, nodename);
+ kfree(nodename);
+ return err;
+}
+
+static int xenbus_uevent_frontend(struct device *_dev,
+ struct kobj_uevent_env *env)
+{
+ struct xenbus_device *dev = to_xenbus_device(_dev);
+
+ if (add_uevent_var(env, "MODALIAS=xen:%s", dev->devicetype))
+ return -ENOMEM;
+
+ return 0;
+}
+
+
+static void backend_changed(struct xenbus_watch *watch,
+ const char **vec, unsigned int len)
+{
+ xenbus_otherend_changed(watch, vec, len, 1);
+}
+
+static struct device_attribute xenbus_frontend_dev_attrs[] = {
+ __ATTR_NULL
+};
+
+static struct xen_bus_type xenbus_frontend = {
+ .root = "device",
+ .levels = 2, /* device/type/<id> */
+ .get_bus_id = frontend_bus_id,
+ .probe = xenbus_probe_frontend,
+ .otherend_changed = backend_changed,
+ .bus = {
+ .name = "xen",
+ .match = xenbus_match,
+ .uevent = xenbus_uevent_frontend,
+ .probe = xenbus_dev_probe,
+ .remove = xenbus_dev_remove,
+ .shutdown = xenbus_dev_shutdown,
+ .dev_attrs = xenbus_frontend_dev_attrs,
+
+ .suspend = xenbus_dev_suspend,
+ .resume = xenbus_dev_resume,
+ },
+};
+
+static void frontend_changed(struct xenbus_watch *watch,
+ const char **vec, unsigned int len)
+{
+ DPRINTK("");
+
+ xenbus_dev_changed(vec[XS_WATCH_PATH], &xenbus_frontend);
+}
+
+
+/* We watch for devices appearing and vanishing. */
+static struct xenbus_watch fe_watch = {
+ .node = "device",
+ .callback = frontend_changed,
+};
+
+static int read_backend_details(struct xenbus_device *xendev)
+{
+ return xenbus_read_otherend_details(xendev, "backend-id", "backend");
+}
+
+static int is_device_connecting(struct device *dev, void *data)
+{
+ struct xenbus_device *xendev = to_xenbus_device(dev);
+ struct device_driver *drv = data;
+ struct xenbus_driver *xendrv;
+
+ /*
+ * A device with no driver will never connect. We care only about
+ * devices which should currently be in the process of connecting.
+ */
+ if (!dev->driver)
+ return 0;
+
+ /* Is this search limited to a particular driver? */
+ if (drv && (dev->driver != drv))
+ return 0;
+
+ xendrv = to_xenbus_driver(dev->driver);
+ return (xendev->state < XenbusStateConnected ||
+ (xendev->state == XenbusStateConnected &&
+ xendrv->is_ready && !xendrv->is_ready(xendev)));
+}
+
+static int exists_connecting_device(struct device_driver *drv)
+{
+ return bus_for_each_dev(&xenbus_frontend.bus, NULL, drv,
+ is_device_connecting);
+}
+
+static int print_device_status(struct device *dev, void *data)
+{
+ struct xenbus_device *xendev = to_xenbus_device(dev);
+ struct device_driver *drv = data;
+
+ /* Is this operation limited to a particular driver? */
+ if (drv && (dev->driver != drv))
+ return 0;
+
+ if (!dev->driver) {
+ /* Information only: is this too noisy? */
+ printk(KERN_INFO "XENBUS: Device with no driver: %s\n",
+ xendev->nodename);
+ } else if (xendev->state < XenbusStateConnected) {
+ enum xenbus_state rstate = XenbusStateUnknown;
+ if (xendev->otherend)
+ rstate = xenbus_read_driver_state(xendev->otherend);
+ printk(KERN_WARNING "XENBUS: Timeout connecting "
+ "to device: %s (local state %d, remote state %d)\n",
+ xendev->nodename, xendev->state, rstate);
+ }
+
+ return 0;
+}
+
+/* We only wait for device setup after most initcalls have run. */
+static int ready_to_wait_for_devices;
+
+/*
+ * On a 5-minute timeout, wait for all devices currently configured. We need
+ * to do this to guarantee that the filesystems and / or network devices
+ * needed for boot are available, before we can allow the boot to proceed.
+ *
+ * This needs to be on a late_initcall, to happen after the frontend device
+ * drivers have been initialised, but before the root fs is mounted.
+ *
+ * A possible improvement here would be to have the tools add a per-device
+ * flag to the store entry, indicating whether it is needed at boot time.
+ * This would allow people who knew what they were doing to accelerate their
+ * boot slightly, but of course needs tools or manual intervention to set up
+ * those flags correctly.
+ */
+static void wait_for_devices(struct xenbus_driver *xendrv)
+{
+ unsigned long start = jiffies;
+ struct device_driver *drv = xendrv ? &xendrv->driver : NULL;
+ unsigned int seconds_waited = 0;
+
+ if (!ready_to_wait_for_devices || !xen_domain())
+ return;
+
+ while (exists_connecting_device(drv)) {
+ if (time_after(jiffies, start + (seconds_waited+5)*HZ)) {
+ if (!seconds_waited)
+ printk(KERN_WARNING "XENBUS: Waiting for "
+ "devices to initialise: ");
+ seconds_waited += 5;
+ printk("%us...", 300 - seconds_waited);
+ if (seconds_waited == 300)
+ break;
+ }
+
+ schedule_timeout_interruptible(HZ/10);
+ }
+
+ if (seconds_waited)
+ printk("\n");
+
+ bus_for_each_dev(&xenbus_frontend.bus, NULL, drv,
+ print_device_status);
+}
+
+int __xenbus_register_frontend(struct xenbus_driver *drv,
+ struct module *owner, const char *mod_name)
+{
+ int ret;
+
+ drv->read_otherend_details = read_backend_details;
+
+ ret = xenbus_register_driver_common(drv, &xenbus_frontend,
+ owner, mod_name);
+ if (ret)
+ return ret;
+
+ /* If this driver is loaded as a module wait for devices to attach. */
+ wait_for_devices(drv);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(__xenbus_register_frontend);
+
+static int frontend_probe_and_watch(struct notifier_block *notifier,
+ unsigned long event,
+ void *data)
+{
+ /* Enumerate devices in xenstore and watch for changes. */
+ xenbus_probe_devices(&xenbus_frontend);
+ register_xenbus_watch(&fe_watch);
+
+ return NOTIFY_DONE;
+}
+
+
+static int __init xenbus_probe_frontend_init(void)
+{
+ static struct notifier_block xenstore_notifier = {
+ .notifier_call = frontend_probe_and_watch
+ };
+ int err;
+
+ DPRINTK("");
+
+ /* Register ourselves with the kernel bus subsystem */
+ err = bus_register(&xenbus_frontend.bus);
+ if (err)
+ return err;
+
+ register_xenstore_notifier(&xenstore_notifier);
+
+ return 0;
+}
+subsys_initcall(xenbus_probe_frontend_init);
+
+#ifndef MODULE
+static int __init boot_wait_for_devices(void)
+{
+ if (xen_hvm_domain() && !xen_platform_pci_unplug)
+ return -ENODEV;
+
+ ready_to_wait_for_devices = 1;
+ wait_for_devices(NULL);
+ return 0;
+}
+
+late_initcall(boot_wait_for_devices);
+#endif
+
+MODULE_LICENSE("GPL");
diff --git a/fs/ntfs/Makefile b/fs/ntfs/Makefile
index 58b6be9..4ff028f 100644
--- a/fs/ntfs/Makefile
+++ b/fs/ntfs/Makefile
@@ -6,7 +6,7 @@
index.o inode.o mft.o mst.o namei.o runlist.o super.o sysctl.o \
unistr.o upcase.o
-EXTRA_CFLAGS = -DNTFS_VERSION=\"2.1.29\"
+EXTRA_CFLAGS = -DNTFS_VERSION=\"2.1.30\"
ifeq ($(CONFIG_NTFS_DEBUG),y)
EXTRA_CFLAGS += -DDEBUG
diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c
index 113ebd9..f4b1057 100644
--- a/fs/ntfs/file.c
+++ b/fs/ntfs/file.c
@@ -1,7 +1,7 @@
/*
* file.c - NTFS kernel file operations. Part of the Linux-NTFS project.
*
- * Copyright (c) 2001-2007 Anton Altaparmakov
+ * Copyright (c) 2001-2011 Anton Altaparmakov and Tuxera Inc.
*
* This program/include file is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as published
@@ -1380,15 +1380,14 @@
* pages (out to offset + bytes), to emulate ntfs_copy_from_user()'s
* single-segment behaviour.
*
- * We call the same helper (__ntfs_copy_from_user_iovec_inatomic()) both
- * when atomic and when not atomic. This is ok because
- * __ntfs_copy_from_user_iovec_inatomic() calls __copy_from_user_inatomic()
- * and it is ok to call this when non-atomic.
- * Infact, the only difference between __copy_from_user_inatomic() and
+ * We call the same helper (__ntfs_copy_from_user_iovec_inatomic()) both when
+ * atomic and when not atomic. This is ok because it calls
+ * __copy_from_user_inatomic() and it is ok to call this when non-atomic. In
+ * fact, the only difference between __copy_from_user_inatomic() and
* __copy_from_user() is that the latter calls might_sleep() and the former
- * should not zero the tail of the buffer on error. And on many
- * architectures __copy_from_user_inatomic() is just defined to
- * __copy_from_user() so it makes no difference at all on those architectures.
+ * should not zero the tail of the buffer on error. And on many architectures
+ * __copy_from_user_inatomic() is just defined to __copy_from_user() so it
+ * makes no difference at all on those architectures.
*/
static inline size_t ntfs_copy_from_user_iovec(struct page **pages,
unsigned nr_pages, unsigned ofs, const struct iovec **iov,
@@ -1409,28 +1408,28 @@
if (unlikely(copied != len)) {
/* Do it the slow way. */
addr = kmap(*pages);
- copied = __ntfs_copy_from_user_iovec_inatomic(addr + ofs,
- *iov, *iov_ofs, len);
- /*
- * Zero the rest of the target like __copy_from_user().
- */
- memset(addr + ofs + copied, 0, len - copied);
- kunmap(*pages);
+ copied = __ntfs_copy_from_user_iovec_inatomic(addr +
+ ofs, *iov, *iov_ofs, len);
if (unlikely(copied != len))
goto err_out;
+ kunmap(*pages);
}
total += len;
+ ntfs_set_next_iovec(iov, iov_ofs, len);
bytes -= len;
if (!bytes)
break;
- ntfs_set_next_iovec(iov, iov_ofs, len);
ofs = 0;
} while (++pages < last_page);
out:
return total;
err_out:
- total += copied;
+ BUG_ON(copied > len);
/* Zero the rest of the target like __copy_from_user(). */
+ memset(addr + ofs + copied, 0, len - copied);
+ kunmap(*pages);
+ total += copied;
+ ntfs_set_next_iovec(iov, iov_ofs, copied);
while (++pages < last_page) {
bytes -= len;
if (!bytes)
diff --git a/fs/ntfs/super.c b/fs/ntfs/super.c
index a30ecacc..29099a0 100644
--- a/fs/ntfs/super.c
+++ b/fs/ntfs/super.c
@@ -1,7 +1,7 @@
/*
* super.c - NTFS kernel super block handling. Part of the Linux-NTFS project.
*
- * Copyright (c) 2001-2007 Anton Altaparmakov
+ * Copyright (c) 2001-2011 Anton Altaparmakov and Tuxera Inc.
* Copyright (c) 2001,2002 Richard Russon
*
* This program/include file is free software; you can redistribute it and/or
@@ -3193,8 +3193,8 @@
ntfs_sysctl(0);
}
-MODULE_AUTHOR("Anton Altaparmakov <aia21@cantab.net>");
-MODULE_DESCRIPTION("NTFS 1.2/3.x driver - Copyright (c) 2001-2007 Anton Altaparmakov");
+MODULE_AUTHOR("Anton Altaparmakov <anton@tuxera.com>");
+MODULE_DESCRIPTION("NTFS 1.2/3.x driver - Copyright (c) 2001-2011 Anton Altaparmakov and Tuxera Inc.");
MODULE_VERSION(NTFS_VERSION);
MODULE_LICENSE("GPL");
#ifdef DEBUG
diff --git a/include/xen/xenbus.h b/include/xen/xenbus.h
index 43e2d7d..7a1d15f 100644
--- a/include/xen/xenbus.h
+++ b/include/xen/xenbus.h
@@ -94,7 +94,7 @@
int (*remove)(struct xenbus_device *dev);
int (*suspend)(struct xenbus_device *dev, pm_message_t state);
int (*resume)(struct xenbus_device *dev);
- int (*uevent)(struct xenbus_device *, char **, int, char *, int);
+ int (*uevent)(struct xenbus_device *, struct kobj_uevent_env *);
struct device_driver driver;
int (*read_otherend_details)(struct xenbus_device *dev);
int (*is_ready)(struct xenbus_device *dev);
diff --git a/tools/power/x86/turbostat/Makefile b/tools/power/x86/turbostat/Makefile
new file mode 100644
index 0000000..fd8e1f1
--- /dev/null
+++ b/tools/power/x86/turbostat/Makefile
@@ -0,0 +1,8 @@
+turbostat : turbostat.c
+
+clean :
+ rm -f turbostat
+
+install :
+ install turbostat /usr/bin/turbostat
+ install turbostat.8 /usr/share/man/man8
diff --git a/tools/power/x86/turbostat/turbostat.8 b/tools/power/x86/turbostat/turbostat.8
new file mode 100644
index 0000000..ff75125
--- /dev/null
+++ b/tools/power/x86/turbostat/turbostat.8
@@ -0,0 +1,172 @@
+.TH TURBOSTAT 8
+.SH NAME
+turbostat \- Report processor frequency and idle statistics
+.SH SYNOPSIS
+.ft B
+.B turbostat
+.RB [ "\-v" ]
+.RB [ "\-M MSR#" ]
+.RB command
+.br
+.B turbostat
+.RB [ "\-v" ]
+.RB [ "\-M MSR#" ]
+.RB [ "\-i interval_sec" ]
+.SH DESCRIPTION
+\fBturbostat \fP reports processor topology, frequency
+and idle power state statistics on modern X86 processors.
+Either \fBcommand\fP is forked and statistics are printed
+upon its completion, or statistics are printed periodically.
+
+\fBturbostat \fP
+requires that the processor
+supports an "invariant" TSC, plus the APERF and MPERF MSRs.
+\fBturbostat \fP will report idle cpu power state residency
+on processors that additionally support C-state residency counters.
+
+.SS Options
+The \fB-v\fP option increases verbosity.
+.PP
+The \fB-M MSR#\fP option dumps the specified MSR,
+in addition to the usual frequency and idle statistics.
+.PP
+The \fB-i interval_sec\fP option prints statistics every \fiinterval_sec\fP seconds.
+The default is 5 seconds.
+.PP
+The \fBcommand\fP parameter forks \fBcommand\fP and upon its exit,
+displays the statistics gathered since it was forked.
+.PP
+.SH FIELD DESCRIPTIONS
+.nf
+\fBpkg\fP processor package number.
+\fBcore\fP processor core number.
+\fBCPU\fP Linux CPU (logical processor) number.
+\fB%c0\fP percent of the interval that the CPU retired instructions.
+\fBGHz\fP average clock rate while the CPU was in c0 state.
+\fBTSC\fP average GHz that the TSC ran during the entire interval.
+\fB%c1, %c3, %c6\fP show the percentage residency in hardware core idle states.
+\fB%pc3, %pc6\fP percentage residency in hardware package idle states.
+.fi
+.PP
+.SH EXAMPLE
+Without any parameters, turbostat prints out counters ever 5 seconds.
+(override interval with "-i sec" option, or specify a command
+for turbostat to fork).
+
+The first row of statistics reflect the average for the entire system.
+Subsequent rows show per-CPU statistics.
+
+.nf
+[root@x980]# ./turbostat
+core CPU %c0 GHz TSC %c1 %c3 %c6 %pc3 %pc6
+ 0.04 1.62 3.38 0.11 0.00 99.85 0.00 95.07
+ 0 0 0.04 1.62 3.38 0.06 0.00 99.90 0.00 95.07
+ 0 6 0.02 1.62 3.38 0.08 0.00 99.90 0.00 95.07
+ 1 2 0.10 1.62 3.38 0.29 0.00 99.61 0.00 95.07
+ 1 8 0.11 1.62 3.38 0.28 0.00 99.61 0.00 95.07
+ 2 4 0.01 1.62 3.38 0.01 0.00 99.98 0.00 95.07
+ 2 10 0.01 1.61 3.38 0.02 0.00 99.98 0.00 95.07
+ 8 1 0.07 1.62 3.38 0.15 0.00 99.78 0.00 95.07
+ 8 7 0.03 1.62 3.38 0.19 0.00 99.78 0.00 95.07
+ 9 3 0.01 1.62 3.38 0.02 0.00 99.98 0.00 95.07
+ 9 9 0.01 1.62 3.38 0.02 0.00 99.98 0.00 95.07
+ 10 5 0.01 1.62 3.38 0.13 0.00 99.86 0.00 95.07
+ 10 11 0.08 1.62 3.38 0.05 0.00 99.86 0.00 95.07
+.fi
+.SH VERBOSE EXAMPLE
+The "-v" option adds verbosity to the output:
+
+.nf
+GenuineIntel 11 CPUID levels; family:model:stepping 0x6:2c:2 (6:44:2)
+12 * 133 = 1600 MHz max efficiency
+25 * 133 = 3333 MHz TSC frequency
+26 * 133 = 3467 MHz max turbo 4 active cores
+26 * 133 = 3467 MHz max turbo 3 active cores
+27 * 133 = 3600 MHz max turbo 2 active cores
+27 * 133 = 3600 MHz max turbo 1 active cores
+
+.fi
+The \fBmax efficiency\fP frequency, a.k.a. Low Frequency Mode, is the frequency
+available at the minimum package voltage. The \fBTSC frequency\fP is the nominal
+maximum frequency of the processor if turbo-mode were not available. This frequency
+should be sustainable on all CPUs indefinitely, given nominal power and cooling.
+The remaining rows show what maximum turbo frequency is possible
+depending on the number of idle cores. Note that this information is
+not available on all processors.
+.SH FORK EXAMPLE
+If turbostat is invoked with a command, it will fork that command
+and output the statistics gathered when the command exits.
+eg. Here a cycle soaker is run on 1 CPU (see %c0) for a few seconds
+until ^C while the other CPUs are mostly idle:
+
+.nf
+[root@x980 lenb]# ./turbostat cat /dev/zero > /dev/null
+
+^Ccore CPU %c0 GHz TSC %c1 %c3 %c6 %pc3 %pc6
+ 8.49 3.63 3.38 16.23 0.66 74.63 0.00 0.00
+ 0 0 1.22 3.62 3.38 32.18 0.00 66.60 0.00 0.00
+ 0 6 0.40 3.61 3.38 33.00 0.00 66.60 0.00 0.00
+ 1 2 0.11 3.14 3.38 0.19 3.95 95.75 0.00 0.00
+ 1 8 0.05 2.88 3.38 0.25 3.95 95.75 0.00 0.00
+ 2 4 0.00 3.13 3.38 0.02 0.00 99.98 0.00 0.00
+ 2 10 0.00 3.09 3.38 0.02 0.00 99.98 0.00 0.00
+ 8 1 0.04 3.50 3.38 14.43 0.00 85.54 0.00 0.00
+ 8 7 0.03 2.98 3.38 14.43 0.00 85.54 0.00 0.00
+ 9 3 0.00 3.16 3.38 100.00 0.00 0.00 0.00 0.00
+ 9 9 99.93 3.63 3.38 0.06 0.00 0.00 0.00 0.00
+ 10 5 0.01 2.82 3.38 0.08 0.00 99.91 0.00 0.00
+ 10 11 0.02 3.36 3.38 0.06 0.00 99.91 0.00 0.00
+6.950866 sec
+
+.fi
+Above the cycle soaker drives cpu9 up 3.6 Ghz turbo limit
+while the other processors are generally in various states of idle.
+
+Note that cpu3 is an HT sibling sharing core9
+with cpu9, and thus it is unable to get to an idle state
+deeper than c1 while cpu9 is busy.
+
+Note that turbostat reports average GHz of 3.61, while
+the arithmetic average of the GHz column above is 3.24.
+This is a weighted average, where the weight is %c0. ie. it is the total number of
+un-halted cycles elapsed per time divided by the number of CPUs.
+.SH NOTES
+
+.B "turbostat "
+must be run as root.
+
+.B "turbostat "
+reads hardware counters, but doesn't write them.
+So it will not interfere with the OS or other programs, including
+multiple invocations of itself.
+
+\fBturbostat \fP
+may work poorly on Linux-2.6.20 through 2.6.29,
+as \fBacpi-cpufreq \fPperiodically cleared the APERF and MPERF
+in those kernels.
+
+The APERF, MPERF MSRs are defined to count non-halted cycles.
+Although it is not guaranteed by the architecture, turbostat assumes
+that they count at TSC rate, which is true on all processors tested to date.
+
+.SH REFERENCES
+"Intel® Turbo Boost Technology
+in Intel® Core™ Microarchitecture (Nehalem) Based Processors"
+http://download.intel.com/design/processor/applnots/320354.pdf
+
+"Intel® 64 and IA-32 Architectures Software Developer's Manual
+Volume 3B: System Programming Guide"
+http://www.intel.com/products/processor/manuals/
+
+.SH FILES
+.ta
+.nf
+/dev/cpu/*/msr
+.fi
+
+.SH "SEE ALSO"
+msr(4), vmstat(8)
+.PP
+.SH AUTHORS
+.nf
+Written by Len Brown <len.brown@intel.com>
diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
new file mode 100644
index 0000000..4c6983d
--- /dev/null
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -0,0 +1,1048 @@
+/*
+ * turbostat -- show CPU frequency and C-state residency
+ * on modern Intel turbo-capable processors.
+ *
+ * Copyright (c) 2010, Intel Corporation.
+ * Len Brown <len.brown@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <sys/stat.h>
+#include <sys/resource.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <sys/time.h>
+#include <stdlib.h>
+#include <dirent.h>
+#include <string.h>
+#include <ctype.h>
+
+#define MSR_TSC 0x10
+#define MSR_NEHALEM_PLATFORM_INFO 0xCE
+#define MSR_NEHALEM_TURBO_RATIO_LIMIT 0x1AD
+#define MSR_APERF 0xE8
+#define MSR_MPERF 0xE7
+#define MSR_PKG_C2_RESIDENCY 0x60D /* SNB only */
+#define MSR_PKG_C3_RESIDENCY 0x3F8
+#define MSR_PKG_C6_RESIDENCY 0x3F9
+#define MSR_PKG_C7_RESIDENCY 0x3FA /* SNB only */
+#define MSR_CORE_C3_RESIDENCY 0x3FC
+#define MSR_CORE_C6_RESIDENCY 0x3FD
+#define MSR_CORE_C7_RESIDENCY 0x3FE /* SNB only */
+
+char *proc_stat = "/proc/stat";
+unsigned int interval_sec = 5; /* set with -i interval_sec */
+unsigned int verbose; /* set with -v */
+unsigned int skip_c0;
+unsigned int skip_c1;
+unsigned int do_nhm_cstates;
+unsigned int do_snb_cstates;
+unsigned int has_aperf;
+unsigned int units = 1000000000; /* Ghz etc */
+unsigned int genuine_intel;
+unsigned int has_invariant_tsc;
+unsigned int do_nehalem_platform_info;
+unsigned int do_nehalem_turbo_ratio_limit;
+unsigned int extra_msr_offset;
+double bclk;
+unsigned int show_pkg;
+unsigned int show_core;
+unsigned int show_cpu;
+
+int aperf_mperf_unstable;
+int backwards_count;
+char *progname;
+int need_reinitialize;
+
+int num_cpus;
+
+typedef struct per_cpu_counters {
+ unsigned long long tsc; /* per thread */
+ unsigned long long aperf; /* per thread */
+ unsigned long long mperf; /* per thread */
+ unsigned long long c1; /* per thread (calculated) */
+ unsigned long long c3; /* per core */
+ unsigned long long c6; /* per core */
+ unsigned long long c7; /* per core */
+ unsigned long long pc2; /* per package */
+ unsigned long long pc3; /* per package */
+ unsigned long long pc6; /* per package */
+ unsigned long long pc7; /* per package */
+ unsigned long long extra_msr; /* per thread */
+ int pkg;
+ int core;
+ int cpu;
+ struct per_cpu_counters *next;
+} PCC;
+
+PCC *pcc_even;
+PCC *pcc_odd;
+PCC *pcc_delta;
+PCC *pcc_average;
+struct timeval tv_even;
+struct timeval tv_odd;
+struct timeval tv_delta;
+
+unsigned long long get_msr(int cpu, off_t offset)
+{
+ ssize_t retval;
+ unsigned long long msr;
+ char pathname[32];
+ int fd;
+
+ sprintf(pathname, "/dev/cpu/%d/msr", cpu);
+ fd = open(pathname, O_RDONLY);
+ if (fd < 0) {
+ perror(pathname);
+ need_reinitialize = 1;
+ return 0;
+ }
+
+ retval = pread(fd, &msr, sizeof msr, offset);
+ if (retval != sizeof msr) {
+ fprintf(stderr, "cpu%d pread(..., 0x%zx) = %jd\n",
+ cpu, offset, retval);
+ exit(-2);
+ }
+
+ close(fd);
+ return msr;
+}
+
+void print_header()
+{
+ if (show_pkg)
+ fprintf(stderr, "pkg ");
+ if (show_core)
+ fprintf(stderr, "core");
+ if (show_cpu)
+ fprintf(stderr, " CPU");
+ if (do_nhm_cstates)
+ fprintf(stderr, " %%c0 ");
+ if (has_aperf)
+ fprintf(stderr, " GHz");
+ fprintf(stderr, " TSC");
+ if (do_nhm_cstates)
+ fprintf(stderr, " %%c1 ");
+ if (do_nhm_cstates)
+ fprintf(stderr, " %%c3 ");
+ if (do_nhm_cstates)
+ fprintf(stderr, " %%c6 ");
+ if (do_snb_cstates)
+ fprintf(stderr, " %%c7 ");
+ if (do_snb_cstates)
+ fprintf(stderr, " %%pc2 ");
+ if (do_nhm_cstates)
+ fprintf(stderr, " %%pc3 ");
+ if (do_nhm_cstates)
+ fprintf(stderr, " %%pc6 ");
+ if (do_snb_cstates)
+ fprintf(stderr, " %%pc7 ");
+ if (extra_msr_offset)
+ fprintf(stderr, " MSR 0x%x ", extra_msr_offset);
+
+ putc('\n', stderr);
+}
+
+void dump_pcc(PCC *pcc)
+{
+ fprintf(stderr, "package: %d ", pcc->pkg);
+ fprintf(stderr, "core:: %d ", pcc->core);
+ fprintf(stderr, "CPU: %d ", pcc->cpu);
+ fprintf(stderr, "TSC: %016llX\n", pcc->tsc);
+ fprintf(stderr, "c3: %016llX\n", pcc->c3);
+ fprintf(stderr, "c6: %016llX\n", pcc->c6);
+ fprintf(stderr, "c7: %016llX\n", pcc->c7);
+ fprintf(stderr, "aperf: %016llX\n", pcc->aperf);
+ fprintf(stderr, "pc2: %016llX\n", pcc->pc2);
+ fprintf(stderr, "pc3: %016llX\n", pcc->pc3);
+ fprintf(stderr, "pc6: %016llX\n", pcc->pc6);
+ fprintf(stderr, "pc7: %016llX\n", pcc->pc7);
+ fprintf(stderr, "msr0x%x: %016llX\n", extra_msr_offset, pcc->extra_msr);
+}
+
+void dump_list(PCC *pcc)
+{
+ printf("dump_list 0x%p\n", pcc);
+
+ for (; pcc; pcc = pcc->next)
+ dump_pcc(pcc);
+}
+
+void print_pcc(PCC *p)
+{
+ double interval_float;
+
+ interval_float = tv_delta.tv_sec + tv_delta.tv_usec/1000000.0;
+
+ /* topology columns, print blanks on 1st (average) line */
+ if (p == pcc_average) {
+ if (show_pkg)
+ fprintf(stderr, " ");
+ if (show_core)
+ fprintf(stderr, " ");
+ if (show_cpu)
+ fprintf(stderr, " ");
+ } else {
+ if (show_pkg)
+ fprintf(stderr, "%4d", p->pkg);
+ if (show_core)
+ fprintf(stderr, "%4d", p->core);
+ if (show_cpu)
+ fprintf(stderr, "%4d", p->cpu);
+ }
+
+ /* %c0 */
+ if (do_nhm_cstates) {
+ if (!skip_c0)
+ fprintf(stderr, "%7.2f", 100.0 * p->mperf/p->tsc);
+ else
+ fprintf(stderr, " ****");
+ }
+
+ /* GHz */
+ if (has_aperf) {
+ if (!aperf_mperf_unstable) {
+ fprintf(stderr, "%5.2f",
+ 1.0 * p->tsc / units * p->aperf /
+ p->mperf / interval_float);
+ } else {
+ if (p->aperf > p->tsc || p->mperf > p->tsc) {
+ fprintf(stderr, " ****");
+ } else {
+ fprintf(stderr, "%4.1f*",
+ 1.0 * p->tsc /
+ units * p->aperf /
+ p->mperf / interval_float);
+ }
+ }
+ }
+
+ /* TSC */
+ fprintf(stderr, "%5.2f", 1.0 * p->tsc/units/interval_float);
+
+ if (do_nhm_cstates) {
+ if (!skip_c1)
+ fprintf(stderr, "%7.2f", 100.0 * p->c1/p->tsc);
+ else
+ fprintf(stderr, " ****");
+ }
+ if (do_nhm_cstates)
+ fprintf(stderr, "%7.2f", 100.0 * p->c3/p->tsc);
+ if (do_nhm_cstates)
+ fprintf(stderr, "%7.2f", 100.0 * p->c6/p->tsc);
+ if (do_snb_cstates)
+ fprintf(stderr, "%7.2f", 100.0 * p->c7/p->tsc);
+ if (do_snb_cstates)
+ fprintf(stderr, "%7.2f", 100.0 * p->pc2/p->tsc);
+ if (do_nhm_cstates)
+ fprintf(stderr, "%7.2f", 100.0 * p->pc3/p->tsc);
+ if (do_nhm_cstates)
+ fprintf(stderr, "%7.2f", 100.0 * p->pc6/p->tsc);
+ if (do_snb_cstates)
+ fprintf(stderr, "%7.2f", 100.0 * p->pc7/p->tsc);
+ if (extra_msr_offset)
+ fprintf(stderr, " 0x%016llx", p->extra_msr);
+ putc('\n', stderr);
+}
+
+void print_counters(PCC *cnt)
+{
+ PCC *pcc;
+
+ print_header();
+
+ if (num_cpus > 1)
+ print_pcc(pcc_average);
+
+ for (pcc = cnt; pcc != NULL; pcc = pcc->next)
+ print_pcc(pcc);
+
+}
+
+#define SUBTRACT_COUNTER(after, before, delta) (delta = (after - before), (before > after))
+
+
+int compute_delta(PCC *after, PCC *before, PCC *delta)
+{
+ int errors = 0;
+ int perf_err = 0;
+
+ skip_c0 = skip_c1 = 0;
+
+ for ( ; after && before && delta;
+ after = after->next, before = before->next, delta = delta->next) {
+ if (before->cpu != after->cpu) {
+ printf("cpu configuration changed: %d != %d\n",
+ before->cpu, after->cpu);
+ return -1;
+ }
+
+ if (SUBTRACT_COUNTER(after->tsc, before->tsc, delta->tsc)) {
+ fprintf(stderr, "cpu%d TSC went backwards %llX to %llX\n",
+ before->cpu, before->tsc, after->tsc);
+ errors++;
+ }
+ /* check for TSC < 1 Mcycles over interval */
+ if (delta->tsc < (1000 * 1000)) {
+ fprintf(stderr, "Insanely slow TSC rate,"
+ " TSC stops in idle?\n");
+ fprintf(stderr, "You can disable all c-states"
+ " by booting with \"idle=poll\"\n");
+ fprintf(stderr, "or just the deep ones with"
+ " \"processor.max_cstate=1\"\n");
+ exit(-3);
+ }
+ if (SUBTRACT_COUNTER(after->c3, before->c3, delta->c3)) {
+ fprintf(stderr, "cpu%d c3 counter went backwards %llX to %llX\n",
+ before->cpu, before->c3, after->c3);
+ errors++;
+ }
+ if (SUBTRACT_COUNTER(after->c6, before->c6, delta->c6)) {
+ fprintf(stderr, "cpu%d c6 counter went backwards %llX to %llX\n",
+ before->cpu, before->c6, after->c6);
+ errors++;
+ }
+ if (SUBTRACT_COUNTER(after->c7, before->c7, delta->c7)) {
+ fprintf(stderr, "cpu%d c7 counter went backwards %llX to %llX\n",
+ before->cpu, before->c7, after->c7);
+ errors++;
+ }
+ if (SUBTRACT_COUNTER(after->pc2, before->pc2, delta->pc2)) {
+ fprintf(stderr, "cpu%d pc2 counter went backwards %llX to %llX\n",
+ before->cpu, before->pc2, after->pc2);
+ errors++;
+ }
+ if (SUBTRACT_COUNTER(after->pc3, before->pc3, delta->pc3)) {
+ fprintf(stderr, "cpu%d pc3 counter went backwards %llX to %llX\n",
+ before->cpu, before->pc3, after->pc3);
+ errors++;
+ }
+ if (SUBTRACT_COUNTER(after->pc6, before->pc6, delta->pc6)) {
+ fprintf(stderr, "cpu%d pc6 counter went backwards %llX to %llX\n",
+ before->cpu, before->pc6, after->pc6);
+ errors++;
+ }
+ if (SUBTRACT_COUNTER(after->pc7, before->pc7, delta->pc7)) {
+ fprintf(stderr, "cpu%d pc7 counter went backwards %llX to %llX\n",
+ before->cpu, before->pc7, after->pc7);
+ errors++;
+ }
+
+ perf_err = SUBTRACT_COUNTER(after->aperf, before->aperf, delta->aperf);
+ if (perf_err) {
+ fprintf(stderr, "cpu%d aperf counter went backwards %llX to %llX\n",
+ before->cpu, before->aperf, after->aperf);
+ }
+ perf_err |= SUBTRACT_COUNTER(after->mperf, before->mperf, delta->mperf);
+ if (perf_err) {
+ fprintf(stderr, "cpu%d mperf counter went backwards %llX to %llX\n",
+ before->cpu, before->mperf, after->mperf);
+ }
+ if (perf_err) {
+ if (!aperf_mperf_unstable) {
+ fprintf(stderr, "%s: APERF or MPERF went backwards *\n", progname);
+ fprintf(stderr, "* Frequency results do not cover entire interval *\n");
+ fprintf(stderr, "* fix this by running Linux-2.6.30 or later *\n");
+
+ aperf_mperf_unstable = 1;
+ }
+ /*
+ * mperf delta is likely a huge "positive" number
+ * can not use it for calculating c0 time
+ */
+ skip_c0 = 1;
+ skip_c1 = 1;
+ }
+
+ /*
+ * As mperf and tsc collection are not atomic,
+ * it is possible for mperf's non-halted cycles
+ * to exceed TSC's all cycles: show c1 = 0% in that case.
+ */
+ if (delta->mperf > delta->tsc)
+ delta->c1 = 0;
+ else /* normal case, derive c1 */
+ delta->c1 = delta->tsc - delta->mperf
+ - delta->c3 - delta->c6 - delta->c7;
+
+ if (delta->mperf == 0)
+ delta->mperf = 1; /* divide by 0 protection */
+
+ /*
+ * for "extra msr", just copy the latest w/o subtracting
+ */
+ delta->extra_msr = after->extra_msr;
+ if (errors) {
+ fprintf(stderr, "ERROR cpu%d before:\n", before->cpu);
+ dump_pcc(before);
+ fprintf(stderr, "ERROR cpu%d after:\n", before->cpu);
+ dump_pcc(after);
+ errors = 0;
+ }
+ }
+ return 0;
+}
+
+void compute_average(PCC *delta, PCC *avg)
+{
+ PCC *sum;
+
+ sum = calloc(1, sizeof(PCC));
+ if (sum == NULL) {
+ perror("calloc sum");
+ exit(1);
+ }
+
+ for (; delta; delta = delta->next) {
+ sum->tsc += delta->tsc;
+ sum->c1 += delta->c1;
+ sum->c3 += delta->c3;
+ sum->c6 += delta->c6;
+ sum->c7 += delta->c7;
+ sum->aperf += delta->aperf;
+ sum->mperf += delta->mperf;
+ sum->pc2 += delta->pc2;
+ sum->pc3 += delta->pc3;
+ sum->pc6 += delta->pc6;
+ sum->pc7 += delta->pc7;
+ }
+ avg->tsc = sum->tsc/num_cpus;
+ avg->c1 = sum->c1/num_cpus;
+ avg->c3 = sum->c3/num_cpus;
+ avg->c6 = sum->c6/num_cpus;
+ avg->c7 = sum->c7/num_cpus;
+ avg->aperf = sum->aperf/num_cpus;
+ avg->mperf = sum->mperf/num_cpus;
+ avg->pc2 = sum->pc2/num_cpus;
+ avg->pc3 = sum->pc3/num_cpus;
+ avg->pc6 = sum->pc6/num_cpus;
+ avg->pc7 = sum->pc7/num_cpus;
+
+ free(sum);
+}
+
+void get_counters(PCC *pcc)
+{
+ for ( ; pcc; pcc = pcc->next) {
+ pcc->tsc = get_msr(pcc->cpu, MSR_TSC);
+ if (do_nhm_cstates)
+ pcc->c3 = get_msr(pcc->cpu, MSR_CORE_C3_RESIDENCY);
+ if (do_nhm_cstates)
+ pcc->c6 = get_msr(pcc->cpu, MSR_CORE_C6_RESIDENCY);
+ if (do_snb_cstates)
+ pcc->c7 = get_msr(pcc->cpu, MSR_CORE_C7_RESIDENCY);
+ if (has_aperf)
+ pcc->aperf = get_msr(pcc->cpu, MSR_APERF);
+ if (has_aperf)
+ pcc->mperf = get_msr(pcc->cpu, MSR_MPERF);
+ if (do_snb_cstates)
+ pcc->pc2 = get_msr(pcc->cpu, MSR_PKG_C2_RESIDENCY);
+ if (do_nhm_cstates)
+ pcc->pc3 = get_msr(pcc->cpu, MSR_PKG_C3_RESIDENCY);
+ if (do_nhm_cstates)
+ pcc->pc6 = get_msr(pcc->cpu, MSR_PKG_C6_RESIDENCY);
+ if (do_snb_cstates)
+ pcc->pc7 = get_msr(pcc->cpu, MSR_PKG_C7_RESIDENCY);
+ if (extra_msr_offset)
+ pcc->extra_msr = get_msr(pcc->cpu, extra_msr_offset);
+ }
+}
+
+
+void print_nehalem_info()
+{
+ unsigned long long msr;
+ unsigned int ratio;
+
+ if (!do_nehalem_platform_info)
+ return;
+
+ msr = get_msr(0, MSR_NEHALEM_PLATFORM_INFO);
+
+ ratio = (msr >> 40) & 0xFF;
+ fprintf(stderr, "%d * %.0f = %.0f MHz max efficiency\n",
+ ratio, bclk, ratio * bclk);
+
+ ratio = (msr >> 8) & 0xFF;
+ fprintf(stderr, "%d * %.0f = %.0f MHz TSC frequency\n",
+ ratio, bclk, ratio * bclk);
+
+ if (verbose > 1)
+ fprintf(stderr, "MSR_NEHALEM_PLATFORM_INFO: 0x%llx\n", msr);
+
+ if (!do_nehalem_turbo_ratio_limit)
+ return;
+
+ msr = get_msr(0, MSR_NEHALEM_TURBO_RATIO_LIMIT);
+
+ ratio = (msr >> 24) & 0xFF;
+ if (ratio)
+ fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 4 active cores\n",
+ ratio, bclk, ratio * bclk);
+
+ ratio = (msr >> 16) & 0xFF;
+ if (ratio)
+ fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 3 active cores\n",
+ ratio, bclk, ratio * bclk);
+
+ ratio = (msr >> 8) & 0xFF;
+ if (ratio)
+ fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 2 active cores\n",
+ ratio, bclk, ratio * bclk);
+
+ ratio = (msr >> 0) & 0xFF;
+ if (ratio)
+ fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 1 active cores\n",
+ ratio, bclk, ratio * bclk);
+
+}
+
+void free_counter_list(PCC *list)
+{
+ PCC *p;
+
+ for (p = list; p; ) {
+ PCC *free_me;
+
+ free_me = p;
+ p = p->next;
+ free(free_me);
+ }
+ return;
+}
+
+void free_all_counters(void)
+{
+ free_counter_list(pcc_even);
+ pcc_even = NULL;
+
+ free_counter_list(pcc_odd);
+ pcc_odd = NULL;
+
+ free_counter_list(pcc_delta);
+ pcc_delta = NULL;
+
+ free_counter_list(pcc_average);
+ pcc_average = NULL;
+}
+
+void insert_cpu_counters(PCC **list, PCC *new)
+{
+ PCC *prev;
+
+ /*
+ * list was empty
+ */
+ if (*list == NULL) {
+ new->next = *list;
+ *list = new;
+ return;
+ }
+
+ show_cpu = 1; /* there is more than one CPU */
+
+ /*
+ * insert on front of list.
+ * It is sorted by ascending package#, core#, cpu#
+ */
+ if (((*list)->pkg > new->pkg) ||
+ (((*list)->pkg == new->pkg) && ((*list)->core > new->core)) ||
+ (((*list)->pkg == new->pkg) && ((*list)->core == new->core) && ((*list)->cpu > new->cpu))) {
+ new->next = *list;
+ *list = new;
+ return;
+ }
+
+ prev = *list;
+
+ while (prev->next && (prev->next->pkg < new->pkg)) {
+ prev = prev->next;
+ show_pkg = 1; /* there is more than 1 package */
+ }
+
+ while (prev->next && (prev->next->pkg == new->pkg)
+ && (prev->next->core < new->core)) {
+ prev = prev->next;
+ show_core = 1; /* there is more than 1 core */
+ }
+
+ while (prev->next && (prev->next->pkg == new->pkg)
+ && (prev->next->core == new->core)
+ && (prev->next->cpu < new->cpu)) {
+ prev = prev->next;
+ }
+
+ /*
+ * insert after "prev"
+ */
+ new->next = prev->next;
+ prev->next = new;
+
+ return;
+}
+
+void alloc_new_cpu_counters(int pkg, int core, int cpu)
+{
+ PCC *new;
+
+ if (verbose > 1)
+ printf("pkg%d core%d, cpu%d\n", pkg, core, cpu);
+
+ new = (PCC *)calloc(1, sizeof(PCC));
+ if (new == NULL) {
+ perror("calloc");
+ exit(1);
+ }
+ new->pkg = pkg;
+ new->core = core;
+ new->cpu = cpu;
+ insert_cpu_counters(&pcc_odd, new);
+
+ new = (PCC *)calloc(1, sizeof(PCC));
+ if (new == NULL) {
+ perror("calloc");
+ exit(1);
+ }
+ new->pkg = pkg;
+ new->core = core;
+ new->cpu = cpu;
+ insert_cpu_counters(&pcc_even, new);
+
+ new = (PCC *)calloc(1, sizeof(PCC));
+ if (new == NULL) {
+ perror("calloc");
+ exit(1);
+ }
+ new->pkg = pkg;
+ new->core = core;
+ new->cpu = cpu;
+ insert_cpu_counters(&pcc_delta, new);
+
+ new = (PCC *)calloc(1, sizeof(PCC));
+ if (new == NULL) {
+ perror("calloc");
+ exit(1);
+ }
+ new->pkg = pkg;
+ new->core = core;
+ new->cpu = cpu;
+ pcc_average = new;
+}
+
+int get_physical_package_id(int cpu)
+{
+ char path[64];
+ FILE *filep;
+ int pkg;
+
+ sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/physical_package_id", cpu);
+ filep = fopen(path, "r");
+ if (filep == NULL) {
+ perror(path);
+ exit(1);
+ }
+ fscanf(filep, "%d", &pkg);
+ fclose(filep);
+ return pkg;
+}
+
+int get_core_id(int cpu)
+{
+ char path[64];
+ FILE *filep;
+ int core;
+
+ sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/core_id", cpu);
+ filep = fopen(path, "r");
+ if (filep == NULL) {
+ perror(path);
+ exit(1);
+ }
+ fscanf(filep, "%d", &core);
+ fclose(filep);
+ return core;
+}
+
+/*
+ * run func(index, cpu) on every cpu in /proc/stat
+ */
+
+int for_all_cpus(void (func)(int, int, int))
+{
+ FILE *fp;
+ int cpu_count;
+ int retval;
+
+ fp = fopen(proc_stat, "r");
+ if (fp == NULL) {
+ perror(proc_stat);
+ exit(1);
+ }
+
+ retval = fscanf(fp, "cpu %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n");
+ if (retval != 0) {
+ perror("/proc/stat format");
+ exit(1);
+ }
+
+ for (cpu_count = 0; ; cpu_count++) {
+ int cpu;
+
+ retval = fscanf(fp, "cpu%u %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n", &cpu);
+ if (retval != 1)
+ break;
+
+ func(get_physical_package_id(cpu), get_core_id(cpu), cpu);
+ }
+ fclose(fp);
+ return cpu_count;
+}
+
+void re_initialize(void)
+{
+ printf("turbostat: topology changed, re-initializing.\n");
+ free_all_counters();
+ num_cpus = for_all_cpus(alloc_new_cpu_counters);
+ need_reinitialize = 0;
+ printf("num_cpus is now %d\n", num_cpus);
+}
+
+void dummy(int pkg, int core, int cpu) { return; }
+/*
+ * check to see if a cpu came on-line
+ */
+void verify_num_cpus()
+{
+ int new_num_cpus;
+
+ new_num_cpus = for_all_cpus(dummy);
+
+ if (new_num_cpus != num_cpus) {
+ if (verbose)
+ printf("num_cpus was %d, is now %d\n",
+ num_cpus, new_num_cpus);
+ need_reinitialize = 1;
+ }
+
+ return;
+}
+
+void turbostat_loop()
+{
+restart:
+ get_counters(pcc_even);
+ gettimeofday(&tv_even, (struct timezone *)NULL);
+
+ while (1) {
+ verify_num_cpus();
+ if (need_reinitialize) {
+ re_initialize();
+ goto restart;
+ }
+ sleep(interval_sec);
+ get_counters(pcc_odd);
+ gettimeofday(&tv_odd, (struct timezone *)NULL);
+
+ compute_delta(pcc_odd, pcc_even, pcc_delta);
+ timersub(&tv_odd, &tv_even, &tv_delta);
+ compute_average(pcc_delta, pcc_average);
+ print_counters(pcc_delta);
+ if (need_reinitialize) {
+ re_initialize();
+ goto restart;
+ }
+ sleep(interval_sec);
+ get_counters(pcc_even);
+ gettimeofday(&tv_even, (struct timezone *)NULL);
+ compute_delta(pcc_even, pcc_odd, pcc_delta);
+ timersub(&tv_even, &tv_odd, &tv_delta);
+ compute_average(pcc_delta, pcc_average);
+ print_counters(pcc_delta);
+ }
+}
+
+void check_dev_msr()
+{
+ struct stat sb;
+
+ if (stat("/dev/cpu/0/msr", &sb)) {
+ fprintf(stderr, "no /dev/cpu/0/msr\n");
+ fprintf(stderr, "Try \"# modprobe msr\"\n");
+ exit(-5);
+ }
+}
+
+void check_super_user()
+{
+ if (getuid() != 0) {
+ fprintf(stderr, "must be root\n");
+ exit(-6);
+ }
+}
+
+int has_nehalem_turbo_ratio_limit(unsigned int family, unsigned int model)
+{
+ if (!genuine_intel)
+ return 0;
+
+ if (family != 6)
+ return 0;
+
+ switch (model) {
+ case 0x1A: /* Core i7, Xeon 5500 series - Bloomfield, Gainstown NHM-EP */
+ case 0x1E: /* Core i7 and i5 Processor - Clarksfield, Lynnfield, Jasper Forest */
+ case 0x1F: /* Core i7 and i5 Processor - Nehalem */
+ case 0x25: /* Westmere Client - Clarkdale, Arrandale */
+ case 0x2C: /* Westmere EP - Gulftown */
+ case 0x2A: /* SNB */
+ case 0x2D: /* SNB Xeon */
+ return 1;
+ case 0x2E: /* Nehalem-EX Xeon - Beckton */
+ case 0x2F: /* Westmere-EX Xeon - Eagleton */
+ default:
+ return 0;
+ }
+}
+
+int is_snb(unsigned int family, unsigned int model)
+{
+ if (!genuine_intel)
+ return 0;
+
+ switch (model) {
+ case 0x2A:
+ case 0x2D:
+ return 1;
+ }
+ return 0;
+}
+
+double discover_bclk(unsigned int family, unsigned int model)
+{
+ if (is_snb(family, model))
+ return 100.00;
+ else
+ return 133.33;
+}
+
+void check_cpuid()
+{
+ unsigned int eax, ebx, ecx, edx, max_level;
+ unsigned int fms, family, model, stepping;
+
+ eax = ebx = ecx = edx = 0;
+
+ asm("cpuid" : "=a" (max_level), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (0));
+
+ if (ebx == 0x756e6547 && edx == 0x49656e69 && ecx == 0x6c65746e)
+ genuine_intel = 1;
+
+ if (verbose)
+ fprintf(stderr, "%.4s%.4s%.4s ",
+ (char *)&ebx, (char *)&edx, (char *)&ecx);
+
+ asm("cpuid" : "=a" (fms), "=c" (ecx), "=d" (edx) : "a" (1) : "ebx");
+ family = (fms >> 8) & 0xf;
+ model = (fms >> 4) & 0xf;
+ stepping = fms & 0xf;
+ if (family == 6 || family == 0xf)
+ model += ((fms >> 16) & 0xf) << 4;
+
+ if (verbose)
+ fprintf(stderr, "%d CPUID levels; family:model:stepping 0x%x:%x:%x (%d:%d:%d)\n",
+ max_level, family, model, stepping, family, model, stepping);
+
+ if (!(edx & (1 << 5))) {
+ fprintf(stderr, "CPUID: no MSR\n");
+ exit(1);
+ }
+
+ /*
+ * check max extended function levels of CPUID.
+ * This is needed to check for invariant TSC.
+ * This check is valid for both Intel and AMD.
+ */
+ ebx = ecx = edx = 0;
+ asm("cpuid" : "=a" (max_level), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (0x80000000));
+
+ if (max_level < 0x80000007) {
+ fprintf(stderr, "CPUID: no invariant TSC (max_level 0x%x)\n", max_level);
+ exit(1);
+ }
+
+ /*
+ * Non-Stop TSC is advertised by CPUID.EAX=0x80000007: EDX.bit8
+ * this check is valid for both Intel and AMD
+ */
+ asm("cpuid" : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (0x80000007));
+ has_invariant_tsc = edx && (1 << 8);
+
+ if (!has_invariant_tsc) {
+ fprintf(stderr, "No invariant TSC\n");
+ exit(1);
+ }
+
+ /*
+ * APERF/MPERF is advertised by CPUID.EAX=0x6: ECX.bit0
+ * this check is valid for both Intel and AMD
+ */
+
+ asm("cpuid" : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (0x6));
+ has_aperf = ecx && (1 << 0);
+ if (!has_aperf) {
+ fprintf(stderr, "No APERF MSR\n");
+ exit(1);
+ }
+
+ do_nehalem_platform_info = genuine_intel && has_invariant_tsc;
+ do_nhm_cstates = genuine_intel; /* all Intel w/ non-stop TSC have NHM counters */
+ do_snb_cstates = is_snb(family, model);
+ bclk = discover_bclk(family, model);
+
+ do_nehalem_turbo_ratio_limit = has_nehalem_turbo_ratio_limit(family, model);
+}
+
+
+void usage()
+{
+ fprintf(stderr, "%s: [-v] [-M MSR#] [-i interval_sec | command ...]\n",
+ progname);
+ exit(1);
+}
+
+
+/*
+ * in /dev/cpu/ return success for names that are numbers
+ * ie. filter out ".", "..", "microcode".
+ */
+int dir_filter(const struct dirent *dirp)
+{
+ if (isdigit(dirp->d_name[0]))
+ return 1;
+ else
+ return 0;
+}
+
+int open_dev_cpu_msr(int dummy1)
+{
+ return 0;
+}
+
+void turbostat_init()
+{
+ check_cpuid();
+
+ check_dev_msr();
+ check_super_user();
+
+ num_cpus = for_all_cpus(alloc_new_cpu_counters);
+
+ if (verbose)
+ print_nehalem_info();
+}
+
+int fork_it(char **argv)
+{
+ int retval;
+ pid_t child_pid;
+ get_counters(pcc_even);
+ gettimeofday(&tv_even, (struct timezone *)NULL);
+
+ child_pid = fork();
+ if (!child_pid) {
+ /* child */
+ execvp(argv[0], argv);
+ } else {
+ int status;
+
+ /* parent */
+ if (child_pid == -1) {
+ perror("fork");
+ exit(1);
+ }
+
+ signal(SIGINT, SIG_IGN);
+ signal(SIGQUIT, SIG_IGN);
+ if (waitpid(child_pid, &status, 0) == -1) {
+ perror("wait");
+ exit(1);
+ }
+ }
+ get_counters(pcc_odd);
+ gettimeofday(&tv_odd, (struct timezone *)NULL);
+ retval = compute_delta(pcc_odd, pcc_even, pcc_delta);
+
+ timersub(&tv_odd, &tv_even, &tv_delta);
+ compute_average(pcc_delta, pcc_average);
+ if (!retval)
+ print_counters(pcc_delta);
+
+ fprintf(stderr, "%.6f sec\n", tv_delta.tv_sec + tv_delta.tv_usec/1000000.0);;
+
+ return 0;
+}
+
+void cmdline(int argc, char **argv)
+{
+ int opt;
+
+ progname = argv[0];
+
+ while ((opt = getopt(argc, argv, "+vi:M:")) != -1) {
+ switch (opt) {
+ case 'v':
+ verbose++;
+ break;
+ case 'i':
+ interval_sec = atoi(optarg);
+ break;
+ case 'M':
+ sscanf(optarg, "%x", &extra_msr_offset);
+ if (verbose > 1)
+ fprintf(stderr, "MSR 0x%X\n", extra_msr_offset);
+ break;
+ default:
+ usage();
+ }
+ }
+}
+
+int main(int argc, char **argv)
+{
+ cmdline(argc, argv);
+
+ if (verbose > 1)
+ fprintf(stderr, "turbostat Dec 6, 2010"
+ " - Len Brown <lenb@kernel.org>\n");
+ if (verbose > 1)
+ fprintf(stderr, "http://userweb.kernel.org/~lenb/acpi/utils/pmtools/turbostat/\n");
+
+ turbostat_init();
+
+ /*
+ * if any params left, it must be a command to fork
+ */
+ if (argc - optind)
+ return fork_it(argv + optind);
+ else
+ turbostat_loop();
+
+ return 0;
+}
diff --git a/tools/power/x86/x86_energy_perf_policy/Makefile b/tools/power/x86/x86_energy_perf_policy/Makefile
new file mode 100644
index 0000000..f458237
--- /dev/null
+++ b/tools/power/x86/x86_energy_perf_policy/Makefile
@@ -0,0 +1,8 @@
+x86_energy_perf_policy : x86_energy_perf_policy.c
+
+clean :
+ rm -f x86_energy_perf_policy
+
+install :
+ install x86_energy_perf_policy /usr/bin/
+ install x86_energy_perf_policy.8 /usr/share/man/man8/
diff --git a/tools/power/x86/x86_energy_perf_policy/x86_energy_perf_policy.8 b/tools/power/x86/x86_energy_perf_policy/x86_energy_perf_policy.8
new file mode 100644
index 0000000..8eaaad6
--- /dev/null
+++ b/tools/power/x86/x86_energy_perf_policy/x86_energy_perf_policy.8
@@ -0,0 +1,104 @@
+.\" This page Copyright (C) 2010 Len Brown <len.brown@intel.com>
+.\" Distributed under the GPL, Copyleft 1994.
+.TH X86_ENERGY_PERF_POLICY 8
+.SH NAME
+x86_energy_perf_policy \- read or write MSR_IA32_ENERGY_PERF_BIAS
+.SH SYNOPSIS
+.ft B
+.B x86_energy_perf_policy
+.RB [ "\-c cpu" ]
+.RB [ "\-v" ]
+.RB "\-r"
+.br
+.B x86_energy_perf_policy
+.RB [ "\-c cpu" ]
+.RB [ "\-v" ]
+.RB 'performance'
+.br
+.B x86_energy_perf_policy
+.RB [ "\-c cpu" ]
+.RB [ "\-v" ]
+.RB 'normal'
+.br
+.B x86_energy_perf_policy
+.RB [ "\-c cpu" ]
+.RB [ "\-v" ]
+.RB 'powersave'
+.br
+.B x86_energy_perf_policy
+.RB [ "\-c cpu" ]
+.RB [ "\-v" ]
+.RB n
+.br
+.SH DESCRIPTION
+\fBx86_energy_perf_policy\fP
+allows software to convey
+its policy for the relative importance of performance
+versus energy savings to the processor.
+
+The processor uses this information in model-specific ways
+when it must select trade-offs between performance and
+energy efficiency.
+
+This policy hint does not supersede Processor Performance states
+(P-states) or CPU Idle power states (C-states), but allows
+software to have influence where it would otherwise be unable
+to express a preference.
+
+For example, this setting may tell the hardware how
+aggressively or conservatively to control frequency
+in the "turbo range" above the explicitly OS-controlled
+P-state frequency range. It may also tell the hardware
+how aggressively is should enter the OS requested C-states.
+
+Support for this feature is indicated by CPUID.06H.ECX.bit3
+per the Intel Architectures Software Developer's Manual.
+
+.SS Options
+\fB-c\fP limits operation to a single CPU.
+The default is to operate on all CPUs.
+Note that MSR_IA32_ENERGY_PERF_BIAS is defined per
+logical processor, but that the initial implementations
+of the MSR were shared among all processors in each package.
+.PP
+\fB-v\fP increases verbosity. By default
+x86_energy_perf_policy is silent.
+.PP
+\fB-r\fP is for "read-only" mode - the unchanged state
+is read and displayed.
+.PP
+.I performance
+Set a policy where performance is paramount.
+The processor will be unwilling to sacrifice any performance
+for the sake of energy saving. This is the hardware default.
+.PP
+.I normal
+Set a policy with a normal balance between performance and energy efficiency.
+The processor will tolerate minor performance compromise
+for potentially significant energy savings.
+This reasonable default for most desktops and servers.
+.PP
+.I powersave
+Set a policy where the processor can accept
+a measurable performance hit to maximize energy efficiency.
+.PP
+.I n
+Set MSR_IA32_ENERGY_PERF_BIAS to the specified number.
+The range of valid numbers is 0-15, where 0 is maximum
+performance and 15 is maximum energy efficiency.
+
+.SH NOTES
+.B "x86_energy_perf_policy "
+runs only as root.
+.SH FILES
+.ta
+.nf
+/dev/cpu/*/msr
+.fi
+
+.SH "SEE ALSO"
+msr(4)
+.PP
+.SH AUTHORS
+.nf
+Written by Len Brown <len.brown@intel.com>
diff --git a/tools/power/x86/x86_energy_perf_policy/x86_energy_perf_policy.c b/tools/power/x86/x86_energy_perf_policy/x86_energy_perf_policy.c
new file mode 100644
index 0000000..d9678a3
--- /dev/null
+++ b/tools/power/x86/x86_energy_perf_policy/x86_energy_perf_policy.c
@@ -0,0 +1,325 @@
+/*
+ * x86_energy_perf_policy -- set the energy versus performance
+ * policy preference bias on recent X86 processors.
+ */
+/*
+ * Copyright (c) 2010, Intel Corporation.
+ * Len Brown <len.brown@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/resource.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <sys/time.h>
+#include <stdlib.h>
+#include <string.h>
+
+unsigned int verbose; /* set with -v */
+unsigned int read_only; /* set with -r */
+char *progname;
+unsigned long long new_bias;
+int cpu = -1;
+
+/*
+ * Usage:
+ *
+ * -c cpu: limit action to a single CPU (default is all CPUs)
+ * -v: verbose output (can invoke more than once)
+ * -r: read-only, don't change any settings
+ *
+ * performance
+ * Performance is paramount.
+ * Unwilling to sacrafice any performance
+ * for the sake of energy saving. (hardware default)
+ *
+ * normal
+ * Can tolerate minor performance compromise
+ * for potentially significant energy savings.
+ * (reasonable default for most desktops and servers)
+ *
+ * powersave
+ * Can tolerate significant performance hit
+ * to maximize energy savings.
+ *
+ * n
+ * a numerical value to write to the underlying MSR.
+ */
+void usage(void)
+{
+ printf("%s: [-c cpu] [-v] "
+ "(-r | 'performance' | 'normal' | 'powersave' | n)\n",
+ progname);
+ exit(1);
+}
+
+#define MSR_IA32_ENERGY_PERF_BIAS 0x000001b0
+
+#define BIAS_PERFORMANCE 0
+#define BIAS_BALANCE 6
+#define BIAS_POWERSAVE 15
+
+void cmdline(int argc, char **argv)
+{
+ int opt;
+
+ progname = argv[0];
+
+ while ((opt = getopt(argc, argv, "+rvc:")) != -1) {
+ switch (opt) {
+ case 'c':
+ cpu = atoi(optarg);
+ break;
+ case 'r':
+ read_only = 1;
+ break;
+ case 'v':
+ verbose++;
+ break;
+ default:
+ usage();
+ }
+ }
+ /* if -r, then should be no additional optind */
+ if (read_only && (argc > optind))
+ usage();
+
+ /*
+ * if no -r , then must be one additional optind
+ */
+ if (!read_only) {
+
+ if (argc != optind + 1) {
+ printf("must supply -r or policy param\n");
+ usage();
+ }
+
+ if (!strcmp("performance", argv[optind])) {
+ new_bias = BIAS_PERFORMANCE;
+ } else if (!strcmp("normal", argv[optind])) {
+ new_bias = BIAS_BALANCE;
+ } else if (!strcmp("powersave", argv[optind])) {
+ new_bias = BIAS_POWERSAVE;
+ } else {
+ char *endptr;
+
+ new_bias = strtoull(argv[optind], &endptr, 0);
+ if (endptr == argv[optind] ||
+ new_bias > BIAS_POWERSAVE) {
+ fprintf(stderr, "invalid value: %s\n",
+ argv[optind]);
+ usage();
+ }
+ }
+ }
+}
+
+/*
+ * validate_cpuid()
+ * returns on success, quietly exits on failure (make verbose with -v)
+ */
+void validate_cpuid(void)
+{
+ unsigned int eax, ebx, ecx, edx, max_level;
+ char brand[16];
+ unsigned int fms, family, model, stepping;
+
+ eax = ebx = ecx = edx = 0;
+
+ asm("cpuid" : "=a" (max_level), "=b" (ebx), "=c" (ecx),
+ "=d" (edx) : "a" (0));
+
+ if (ebx != 0x756e6547 || edx != 0x49656e69 || ecx != 0x6c65746e) {
+ if (verbose)
+ fprintf(stderr, "%.4s%.4s%.4s != GenuineIntel",
+ (char *)&ebx, (char *)&edx, (char *)&ecx);
+ exit(1);
+ }
+
+ asm("cpuid" : "=a" (fms), "=c" (ecx), "=d" (edx) : "a" (1) : "ebx");
+ family = (fms >> 8) & 0xf;
+ model = (fms >> 4) & 0xf;
+ stepping = fms & 0xf;
+ if (family == 6 || family == 0xf)
+ model += ((fms >> 16) & 0xf) << 4;
+
+ if (verbose > 1)
+ printf("CPUID %s %d levels family:model:stepping "
+ "0x%x:%x:%x (%d:%d:%d)\n", brand, max_level,
+ family, model, stepping, family, model, stepping);
+
+ if (!(edx & (1 << 5))) {
+ if (verbose)
+ printf("CPUID: no MSR\n");
+ exit(1);
+ }
+
+ /*
+ * Support for MSR_IA32_ENERGY_PERF_BIAS
+ * is indicated by CPUID.06H.ECX.bit3
+ */
+ asm("cpuid" : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (6));
+ if (verbose)
+ printf("CPUID.06H.ECX: 0x%x\n", ecx);
+ if (!(ecx & (1 << 3))) {
+ if (verbose)
+ printf("CPUID: No MSR_IA32_ENERGY_PERF_BIAS\n");
+ exit(1);
+ }
+ return; /* success */
+}
+
+unsigned long long get_msr(int cpu, int offset)
+{
+ unsigned long long msr;
+ char msr_path[32];
+ int retval;
+ int fd;
+
+ sprintf(msr_path, "/dev/cpu/%d/msr", cpu);
+ fd = open(msr_path, O_RDONLY);
+ if (fd < 0) {
+ printf("Try \"# modprobe msr\"\n");
+ perror(msr_path);
+ exit(1);
+ }
+
+ retval = pread(fd, &msr, sizeof msr, offset);
+
+ if (retval != sizeof msr) {
+ printf("pread cpu%d 0x%x = %d\n", cpu, offset, retval);
+ exit(-2);
+ }
+ close(fd);
+ return msr;
+}
+
+unsigned long long put_msr(int cpu, unsigned long long new_msr, int offset)
+{
+ unsigned long long old_msr;
+ char msr_path[32];
+ int retval;
+ int fd;
+
+ sprintf(msr_path, "/dev/cpu/%d/msr", cpu);
+ fd = open(msr_path, O_RDWR);
+ if (fd < 0) {
+ perror(msr_path);
+ exit(1);
+ }
+
+ retval = pread(fd, &old_msr, sizeof old_msr, offset);
+ if (retval != sizeof old_msr) {
+ perror("pwrite");
+ printf("pread cpu%d 0x%x = %d\n", cpu, offset, retval);
+ exit(-2);
+ }
+
+ retval = pwrite(fd, &new_msr, sizeof new_msr, offset);
+ if (retval != sizeof new_msr) {
+ perror("pwrite");
+ printf("pwrite cpu%d 0x%x = %d\n", cpu, offset, retval);
+ exit(-2);
+ }
+
+ close(fd);
+
+ return old_msr;
+}
+
+void print_msr(int cpu)
+{
+ printf("cpu%d: 0x%016llx\n",
+ cpu, get_msr(cpu, MSR_IA32_ENERGY_PERF_BIAS));
+}
+
+void update_msr(int cpu)
+{
+ unsigned long long previous_msr;
+
+ previous_msr = put_msr(cpu, new_bias, MSR_IA32_ENERGY_PERF_BIAS);
+
+ if (verbose)
+ printf("cpu%d msr0x%x 0x%016llx -> 0x%016llx\n",
+ cpu, MSR_IA32_ENERGY_PERF_BIAS, previous_msr, new_bias);
+
+ return;
+}
+
+char *proc_stat = "/proc/stat";
+/*
+ * run func() on every cpu in /dev/cpu
+ */
+void for_every_cpu(void (func)(int))
+{
+ FILE *fp;
+ int retval;
+
+ fp = fopen(proc_stat, "r");
+ if (fp == NULL) {
+ perror(proc_stat);
+ exit(1);
+ }
+
+ retval = fscanf(fp, "cpu %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n");
+ if (retval != 0) {
+ perror("/proc/stat format");
+ exit(1);
+ }
+
+ while (1) {
+ int cpu;
+
+ retval = fscanf(fp,
+ "cpu%u %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n",
+ &cpu);
+ if (retval != 1)
+ return;
+
+ func(cpu);
+ }
+ fclose(fp);
+}
+
+int main(int argc, char **argv)
+{
+ cmdline(argc, argv);
+
+ if (verbose > 1)
+ printf("x86_energy_perf_policy Nov 24, 2010"
+ " - Len Brown <lenb@kernel.org>\n");
+ if (verbose > 1 && !read_only)
+ printf("new_bias %lld\n", new_bias);
+
+ validate_cpuid();
+
+ if (cpu != -1) {
+ if (read_only)
+ print_msr(cpu);
+ else
+ update_msr(cpu);
+ } else {
+ if (read_only)
+ for_every_cpu(print_msr);
+ else
+ for_every_cpu(update_msr);
+ }
+
+ return 0;
+}
diff --git a/tools/testing/ktest/compare-ktest-sample.pl b/tools/testing/ktest/compare-ktest-sample.pl
new file mode 100755
index 0000000..9a571e7
--- /dev/null
+++ b/tools/testing/ktest/compare-ktest-sample.pl
@@ -0,0 +1,30 @@
+#!/usr/bin/perl
+
+open (IN,"ktest.pl");
+while (<IN>) {
+ if (/\$opt\{"?([A-Z].*?)(\[.*\])?"?\}/ ||
+ /set_test_option\("(.*?)"/) {
+ $opt{$1} = 1;
+ }
+}
+close IN;
+
+open (IN, "sample.conf");
+while (<IN>) {
+ if (/^\s*#?\s*(\S+)\s*=/) {
+ $samp{$1} = 1;
+ }
+}
+close IN;
+
+foreach $opt (keys %opt) {
+ if (!defined($samp{$opt})) {
+ print "opt = $opt\n";
+ }
+}
+
+foreach $samp (keys %samp) {
+ if (!defined($opt{$samp})) {
+ print "samp = $samp\n";
+ }
+}
diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl
new file mode 100755
index 0000000..e1c62ee
--- /dev/null
+++ b/tools/testing/ktest/ktest.pl
@@ -0,0 +1,2023 @@
+#!/usr/bin/perl -w
+#
+# Copywrite 2010 - Steven Rostedt <srostedt@redhat.com>, Red Hat Inc.
+# Licensed under the terms of the GNU GPL License version 2
+#
+
+use strict;
+use IPC::Open2;
+use Fcntl qw(F_GETFL F_SETFL O_NONBLOCK);
+use File::Path qw(mkpath);
+use File::Copy qw(cp);
+use FileHandle;
+
+my $VERSION = "0.2";
+
+$| = 1;
+
+my %opt;
+my %repeat_tests;
+my %repeats;
+my %default;
+
+#default opts
+$default{"NUM_TESTS"} = 1;
+$default{"REBOOT_TYPE"} = "grub";
+$default{"TEST_TYPE"} = "test";
+$default{"BUILD_TYPE"} = "randconfig";
+$default{"MAKE_CMD"} = "make";
+$default{"TIMEOUT"} = 120;
+$default{"TMP_DIR"} = "/tmp/ktest";
+$default{"SLEEP_TIME"} = 60; # sleep time between tests
+$default{"BUILD_NOCLEAN"} = 0;
+$default{"REBOOT_ON_ERROR"} = 0;
+$default{"POWEROFF_ON_ERROR"} = 0;
+$default{"REBOOT_ON_SUCCESS"} = 1;
+$default{"POWEROFF_ON_SUCCESS"} = 0;
+$default{"BUILD_OPTIONS"} = "";
+$default{"BISECT_SLEEP_TIME"} = 60; # sleep time between bisects
+$default{"CLEAR_LOG"} = 0;
+$default{"SUCCESS_LINE"} = "login:";
+$default{"BOOTED_TIMEOUT"} = 1;
+$default{"DIE_ON_FAILURE"} = 1;
+$default{"SSH_EXEC"} = "ssh \$SSH_USER\@\$MACHINE \$SSH_COMMAND";
+$default{"SCP_TO_TARGET"} = "scp \$SRC_FILE \$SSH_USER\@\$MACHINE:\$DST_FILE";
+$default{"REBOOT"} = "ssh \$SSH_USER\@\$MACHINE reboot";
+$default{"STOP_AFTER_SUCCESS"} = 10;
+$default{"STOP_AFTER_FAILURE"} = 60;
+$default{"LOCALVERSION"} = "-test";
+
+my $ktest_config;
+my $version;
+my $machine;
+my $ssh_user;
+my $tmpdir;
+my $builddir;
+my $outputdir;
+my $output_config;
+my $test_type;
+my $build_type;
+my $build_options;
+my $reboot_type;
+my $reboot_script;
+my $power_cycle;
+my $reboot;
+my $reboot_on_error;
+my $poweroff_on_error;
+my $die_on_failure;
+my $powercycle_after_reboot;
+my $poweroff_after_halt;
+my $ssh_exec;
+my $scp_to_target;
+my $power_off;
+my $grub_menu;
+my $grub_number;
+my $target;
+my $make;
+my $post_install;
+my $noclean;
+my $minconfig;
+my $addconfig;
+my $in_bisect = 0;
+my $bisect_bad = "";
+my $reverse_bisect;
+my $in_patchcheck = 0;
+my $run_test;
+my $redirect;
+my $buildlog;
+my $dmesg;
+my $monitor_fp;
+my $monitor_pid;
+my $monitor_cnt = 0;
+my $sleep_time;
+my $bisect_sleep_time;
+my $store_failures;
+my $timeout;
+my $booted_timeout;
+my $console;
+my $success_line;
+my $stop_after_success;
+my $stop_after_failure;
+my $build_target;
+my $target_image;
+my $localversion;
+my $iteration = 0;
+my $successes = 0;
+
+my %entered_configs;
+my %config_help;
+
+$config_help{"MACHINE"} = << "EOF"
+ The machine hostname that you will test.
+EOF
+ ;
+$config_help{"SSH_USER"} = << "EOF"
+ The box is expected to have ssh on normal bootup, provide the user
+ (most likely root, since you need privileged operations)
+EOF
+ ;
+$config_help{"BUILD_DIR"} = << "EOF"
+ The directory that contains the Linux source code (full path).
+EOF
+ ;
+$config_help{"OUTPUT_DIR"} = << "EOF"
+ The directory that the objects will be built (full path).
+ (can not be same as BUILD_DIR)
+EOF
+ ;
+$config_help{"BUILD_TARGET"} = << "EOF"
+ The location of the compiled file to copy to the target.
+ (relative to OUTPUT_DIR)
+EOF
+ ;
+$config_help{"TARGET_IMAGE"} = << "EOF"
+ The place to put your image on the test machine.
+EOF
+ ;
+$config_help{"POWER_CYCLE"} = << "EOF"
+ A script or command to reboot the box.
+
+ Here is a digital loggers power switch example
+ POWER_CYCLE = wget --no-proxy -O /dev/null -q --auth-no-challenge 'http://admin:admin\@power/outlet?5=CCL'
+
+ Here is an example to reboot a virtual box on the current host
+ with the name "Guest".
+ POWER_CYCLE = virsh destroy Guest; sleep 5; virsh start Guest
+EOF
+ ;
+$config_help{"CONSOLE"} = << "EOF"
+ The script or command that reads the console
+
+ If you use ttywatch server, something like the following would work.
+CONSOLE = nc -d localhost 3001
+
+ For a virtual machine with guest name "Guest".
+CONSOLE = virsh console Guest
+EOF
+ ;
+$config_help{"LOCALVERSION"} = << "EOF"
+ Required version ending to differentiate the test
+ from other linux builds on the system.
+EOF
+ ;
+$config_help{"REBOOT_TYPE"} = << "EOF"
+ Way to reboot the box to the test kernel.
+ Only valid options so far are "grub" and "script".
+
+ If you specify grub, it will assume grub version 1
+ and will search in /boot/grub/menu.lst for the title \$GRUB_MENU
+ and select that target to reboot to the kernel. If this is not
+ your setup, then specify "script" and have a command or script
+ specified in REBOOT_SCRIPT to boot to the target.
+
+ The entry in /boot/grub/menu.lst must be entered in manually.
+ The test will not modify that file.
+EOF
+ ;
+$config_help{"GRUB_MENU"} = << "EOF"
+ The grub title name for the test kernel to boot
+ (Only mandatory if REBOOT_TYPE = grub)
+
+ Note, ktest.pl will not update the grub menu.lst, you need to
+ manually add an option for the test. ktest.pl will search
+ the grub menu.lst for this option to find what kernel to
+ reboot into.
+
+ For example, if in the /boot/grub/menu.lst the test kernel title has:
+ title Test Kernel
+ kernel vmlinuz-test
+ GRUB_MENU = Test Kernel
+EOF
+ ;
+$config_help{"REBOOT_SCRIPT"} = << "EOF"
+ A script to reboot the target into the test kernel
+ (Only mandatory if REBOOT_TYPE = script)
+EOF
+ ;
+
+
+sub get_ktest_config {
+ my ($config) = @_;
+
+ return if (defined($opt{$config}));
+
+ if (defined($config_help{$config})) {
+ print "\n";
+ print $config_help{$config};
+ }
+
+ for (;;) {
+ print "$config = ";
+ if (defined($default{$config})) {
+ print "\[$default{$config}\] ";
+ }
+ $entered_configs{$config} = <STDIN>;
+ $entered_configs{$config} =~ s/^\s*(.*\S)\s*$/$1/;
+ if ($entered_configs{$config} =~ /^\s*$/) {
+ if ($default{$config}) {
+ $entered_configs{$config} = $default{$config};
+ } else {
+ print "Your answer can not be blank\n";
+ next;
+ }
+ }
+ last;
+ }
+}
+
+sub get_ktest_configs {
+ get_ktest_config("MACHINE");
+ get_ktest_config("SSH_USER");
+ get_ktest_config("BUILD_DIR");
+ get_ktest_config("OUTPUT_DIR");
+ get_ktest_config("BUILD_TARGET");
+ get_ktest_config("TARGET_IMAGE");
+ get_ktest_config("POWER_CYCLE");
+ get_ktest_config("CONSOLE");
+ get_ktest_config("LOCALVERSION");
+
+ my $rtype = $opt{"REBOOT_TYPE"};
+
+ if (!defined($rtype)) {
+ if (!defined($opt{"GRUB_MENU"})) {
+ get_ktest_config("REBOOT_TYPE");
+ $rtype = $entered_configs{"REBOOT_TYPE"};
+ } else {
+ $rtype = "grub";
+ }
+ }
+
+ if ($rtype eq "grub") {
+ get_ktest_config("GRUB_MENU");
+ } else {
+ get_ktest_config("REBOOT_SCRIPT");
+ }
+}
+
+sub set_value {
+ my ($lvalue, $rvalue) = @_;
+
+ if (defined($opt{$lvalue})) {
+ die "Error: Option $lvalue defined more than once!\n";
+ }
+ if ($rvalue =~ /^\s*$/) {
+ delete $opt{$lvalue};
+ } else {
+ $opt{$lvalue} = $rvalue;
+ }
+}
+
+sub read_config {
+ my ($config) = @_;
+
+ open(IN, $config) || die "can't read file $config";
+
+ my $name = $config;
+ $name =~ s,.*/(.*),$1,;
+
+ my $test_num = 0;
+ my $default = 1;
+ my $repeat = 1;
+ my $num_tests_set = 0;
+ my $skip = 0;
+ my $rest;
+
+ while (<IN>) {
+
+ # ignore blank lines and comments
+ next if (/^\s*$/ || /\s*\#/);
+
+ if (/^\s*TEST_START(.*)/) {
+
+ $rest = $1;
+
+ if ($num_tests_set) {
+ die "$name: $.: Can not specify both NUM_TESTS and TEST_START\n";
+ }
+
+ my $old_test_num = $test_num;
+ my $old_repeat = $repeat;
+
+ $test_num += $repeat;
+ $default = 0;
+ $repeat = 1;
+
+ if ($rest =~ /\s+SKIP(.*)/) {
+ $rest = $1;
+ $skip = 1;
+ } else {
+ $skip = 0;
+ }
+
+ if ($rest =~ /\s+ITERATE\s+(\d+)(.*)$/) {
+ $repeat = $1;
+ $rest = $2;
+ $repeat_tests{"$test_num"} = $repeat;
+ }
+
+ if ($rest =~ /\s+SKIP(.*)/) {
+ $rest = $1;
+ $skip = 1;
+ }
+
+ if ($rest !~ /^\s*$/) {
+ die "$name: $.: Gargbage found after TEST_START\n$_";
+ }
+
+ if ($skip) {
+ $test_num = $old_test_num;
+ $repeat = $old_repeat;
+ }
+
+ } elsif (/^\s*DEFAULTS(.*)$/) {
+ $default = 1;
+
+ $rest = $1;
+
+ if ($rest =~ /\s+SKIP(.*)/) {
+ $rest = $1;
+ $skip = 1;
+ } else {
+ $skip = 0;
+ }
+
+ if ($rest !~ /^\s*$/) {
+ die "$name: $.: Gargbage found after DEFAULTS\n$_";
+ }
+
+ } elsif (/^\s*([A-Z_\[\]\d]+)\s*=\s*(.*?)\s*$/) {
+
+ next if ($skip);
+
+ my $lvalue = $1;
+ my $rvalue = $2;
+
+ if (!$default &&
+ ($lvalue eq "NUM_TESTS" ||
+ $lvalue eq "LOG_FILE" ||
+ $lvalue eq "CLEAR_LOG")) {
+ die "$name: $.: $lvalue must be set in DEFAULTS section\n";
+ }
+
+ if ($lvalue eq "NUM_TESTS") {
+ if ($test_num) {
+ die "$name: $.: Can not specify both NUM_TESTS and TEST_START\n";
+ }
+ if (!$default) {
+ die "$name: $.: NUM_TESTS must be set in default section\n";
+ }
+ $num_tests_set = 1;
+ }
+
+ if ($default || $lvalue =~ /\[\d+\]$/) {
+ set_value($lvalue, $rvalue);
+ } else {
+ my $val = "$lvalue\[$test_num\]";
+ set_value($val, $rvalue);
+
+ if ($repeat > 1) {
+ $repeats{$val} = $repeat;
+ }
+ }
+ } else {
+ die "$name: $.: Garbage found in config\n$_";
+ }
+ }
+
+ close(IN);
+
+ if ($test_num) {
+ $test_num += $repeat - 1;
+ $opt{"NUM_TESTS"} = $test_num;
+ }
+
+ # make sure we have all mandatory configs
+ get_ktest_configs;
+
+ # set any defaults
+
+ foreach my $default (keys %default) {
+ if (!defined($opt{$default})) {
+ $opt{$default} = $default{$default};
+ }
+ }
+}
+
+sub _logit {
+ if (defined($opt{"LOG_FILE"})) {
+ open(OUT, ">> $opt{LOG_FILE}") or die "Can't write to $opt{LOG_FILE}";
+ print OUT @_;
+ close(OUT);
+ }
+}
+
+sub logit {
+ if (defined($opt{"LOG_FILE"})) {
+ _logit @_;
+ } else {
+ print @_;
+ }
+}
+
+sub doprint {
+ print @_;
+ _logit @_;
+}
+
+sub run_command;
+
+sub reboot {
+ # try to reboot normally
+ if (run_command $reboot) {
+ if (defined($powercycle_after_reboot)) {
+ sleep $powercycle_after_reboot;
+ run_command "$power_cycle";
+ }
+ } else {
+ # nope? power cycle it.
+ run_command "$power_cycle";
+ }
+}
+
+sub do_not_reboot {
+ my $i = $iteration;
+
+ return $test_type eq "build" ||
+ ($test_type eq "patchcheck" && $opt{"PATCHCHECK_TYPE[$i]"} eq "build") ||
+ ($test_type eq "bisect" && $opt{"BISECT_TYPE[$i]"} eq "build");
+}
+
+sub dodie {
+ doprint "CRITICAL FAILURE... ", @_, "\n";
+
+ my $i = $iteration;
+
+ if ($reboot_on_error && !do_not_reboot) {
+
+ doprint "REBOOTING\n";
+ reboot;
+
+ } elsif ($poweroff_on_error && defined($power_off)) {
+ doprint "POWERING OFF\n";
+ `$power_off`;
+ }
+
+ die @_, "\n";
+}
+
+sub open_console {
+ my ($fp) = @_;
+
+ my $flags;
+
+ my $pid = open($fp, "$console|") or
+ dodie "Can't open console $console";
+
+ $flags = fcntl($fp, F_GETFL, 0) or
+ dodie "Can't get flags for the socket: $!";
+ $flags = fcntl($fp, F_SETFL, $flags | O_NONBLOCK) or
+ dodie "Can't set flags for the socket: $!";
+
+ return $pid;
+}
+
+sub close_console {
+ my ($fp, $pid) = @_;
+
+ doprint "kill child process $pid\n";
+ kill 2, $pid;
+
+ print "closing!\n";
+ close($fp);
+}
+
+sub start_monitor {
+ if ($monitor_cnt++) {
+ return;
+ }
+ $monitor_fp = \*MONFD;
+ $monitor_pid = open_console $monitor_fp;
+
+ return;
+
+ open(MONFD, "Stop perl from warning about single use of MONFD");
+}
+
+sub end_monitor {
+ if (--$monitor_cnt) {
+ return;
+ }
+ close_console($monitor_fp, $monitor_pid);
+}
+
+sub wait_for_monitor {
+ my ($time) = @_;
+ my $line;
+
+ doprint "** Wait for monitor to settle down **\n";
+
+ # read the monitor and wait for the system to calm down
+ do {
+ $line = wait_for_input($monitor_fp, $time);
+ print "$line" if (defined($line));
+ } while (defined($line));
+ print "** Monitor flushed **\n";
+}
+
+sub fail {
+
+ if ($die_on_failure) {
+ dodie @_;
+ }
+
+ doprint "FAILED\n";
+
+ my $i = $iteration;
+
+ # no need to reboot for just building.
+ if (!do_not_reboot) {
+ doprint "REBOOTING\n";
+ reboot;
+ start_monitor;
+ wait_for_monitor $sleep_time;
+ end_monitor;
+ }
+
+ doprint "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\n";
+ doprint "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\n";
+ doprint "KTEST RESULT: TEST $i Failed: ", @_, "\n";
+ doprint "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\n";
+ doprint "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\n";
+
+ return 1 if (!defined($store_failures));
+
+ my @t = localtime;
+ my $date = sprintf "%04d%02d%02d%02d%02d%02d",
+ 1900+$t[5],$t[4],$t[3],$t[2],$t[1],$t[0];
+
+ my $type = $build_type;
+ if ($type =~ /useconfig/) {
+ $type = "useconfig";
+ }
+
+ my $dir = "$machine-$test_type-$type-fail-$date";
+ my $faildir = "$store_failures/$dir";
+
+ if (!-d $faildir) {
+ mkpath($faildir) or
+ die "can't create $faildir";
+ }
+ if (-f "$output_config") {
+ cp "$output_config", "$faildir/config" or
+ die "failed to copy .config";
+ }
+ if (-f $buildlog) {
+ cp $buildlog, "$faildir/buildlog" or
+ die "failed to move $buildlog";
+ }
+ if (-f $dmesg) {
+ cp $dmesg, "$faildir/dmesg" or
+ die "failed to move $dmesg";
+ }
+
+ doprint "*** Saved info to $faildir ***\n";
+
+ return 1;
+}
+
+sub run_command {
+ my ($command) = @_;
+ my $dolog = 0;
+ my $dord = 0;
+ my $pid;
+
+ $command =~ s/\$SSH_USER/$ssh_user/g;
+ $command =~ s/\$MACHINE/$machine/g;
+
+ doprint("$command ... ");
+
+ $pid = open(CMD, "$command 2>&1 |") or
+ (fail "unable to exec $command" and return 0);
+
+ if (defined($opt{"LOG_FILE"})) {
+ open(LOG, ">>$opt{LOG_FILE}") or
+ dodie "failed to write to log";
+ $dolog = 1;
+ }
+
+ if (defined($redirect)) {
+ open (RD, ">$redirect") or
+ dodie "failed to write to redirect $redirect";
+ $dord = 1;
+ }
+
+ while (<CMD>) {
+ print LOG if ($dolog);
+ print RD if ($dord);
+ }
+
+ waitpid($pid, 0);
+ my $failed = $?;
+
+ close(CMD);
+ close(LOG) if ($dolog);
+ close(RD) if ($dord);
+
+ if ($failed) {
+ doprint "FAILED!\n";
+ } else {
+ doprint "SUCCESS\n";
+ }
+
+ return !$failed;
+}
+
+sub run_ssh {
+ my ($cmd) = @_;
+ my $cp_exec = $ssh_exec;
+
+ $cp_exec =~ s/\$SSH_COMMAND/$cmd/g;
+ return run_command "$cp_exec";
+}
+
+sub run_scp {
+ my ($src, $dst) = @_;
+ my $cp_scp = $scp_to_target;
+
+ $cp_scp =~ s/\$SRC_FILE/$src/g;
+ $cp_scp =~ s/\$DST_FILE/$dst/g;
+
+ return run_command "$cp_scp";
+}
+
+sub get_grub_index {
+
+ if ($reboot_type ne "grub") {
+ return;
+ }
+ return if (defined($grub_number));
+
+ doprint "Find grub menu ... ";
+ $grub_number = -1;
+
+ my $ssh_grub = $ssh_exec;
+ $ssh_grub =~ s,\$SSH_COMMAND,cat /boot/grub/menu.lst,g;
+
+ open(IN, "$ssh_grub |")
+ or die "unable to get menu.lst";
+
+ while (<IN>) {
+ if (/^\s*title\s+$grub_menu\s*$/) {
+ $grub_number++;
+ last;
+ } elsif (/^\s*title\s/) {
+ $grub_number++;
+ }
+ }
+ close(IN);
+
+ die "Could not find '$grub_menu' in /boot/grub/menu on $machine"
+ if ($grub_number < 0);
+ doprint "$grub_number\n";
+}
+
+sub wait_for_input
+{
+ my ($fp, $time) = @_;
+ my $rin;
+ my $ready;
+ my $line;
+ my $ch;
+
+ if (!defined($time)) {
+ $time = $timeout;
+ }
+
+ $rin = '';
+ vec($rin, fileno($fp), 1) = 1;
+ $ready = select($rin, undef, undef, $time);
+
+ $line = "";
+
+ # try to read one char at a time
+ while (sysread $fp, $ch, 1) {
+ $line .= $ch;
+ last if ($ch eq "\n");
+ }
+
+ if (!length($line)) {
+ return undef;
+ }
+
+ return $line;
+}
+
+sub reboot_to {
+ if ($reboot_type eq "grub") {
+ run_ssh "'(echo \"savedefault --default=$grub_number --once\" | grub --batch; reboot)'";
+ return;
+ }
+
+ run_command "$reboot_script";
+}
+
+sub get_sha1 {
+ my ($commit) = @_;
+
+ doprint "git rev-list --max-count=1 $commit ... ";
+ my $sha1 = `git rev-list --max-count=1 $commit`;
+ my $ret = $?;
+
+ logit $sha1;
+
+ if ($ret) {
+ doprint "FAILED\n";
+ dodie "Failed to get git $commit";
+ }
+
+ print "SUCCESS\n";
+
+ chomp $sha1;
+
+ return $sha1;
+}
+
+sub monitor {
+ my $booted = 0;
+ my $bug = 0;
+ my $skip_call_trace = 0;
+ my $loops;
+
+ wait_for_monitor 5;
+
+ my $line;
+ my $full_line = "";
+
+ open(DMESG, "> $dmesg") or
+ die "unable to write to $dmesg";
+
+ reboot_to;
+
+ my $success_start;
+ my $failure_start;
+
+ for (;;) {
+
+ if ($booted) {
+ $line = wait_for_input($monitor_fp, $booted_timeout);
+ } else {
+ $line = wait_for_input($monitor_fp);
+ }
+
+ last if (!defined($line));
+
+ doprint $line;
+ print DMESG $line;
+
+ # we are not guaranteed to get a full line
+ $full_line .= $line;
+
+ if ($full_line =~ /$success_line/) {
+ $booted = 1;
+ $success_start = time;
+ }
+
+ if ($booted && defined($stop_after_success) &&
+ $stop_after_success >= 0) {
+ my $now = time;
+ if ($now - $success_start >= $stop_after_success) {
+ doprint "Test forced to stop after $stop_after_success seconds after success\n";
+ last;
+ }
+ }
+
+ if ($full_line =~ /\[ backtrace testing \]/) {
+ $skip_call_trace = 1;
+ }
+
+ if ($full_line =~ /call trace:/i) {
+ if (!$skip_call_trace) {
+ $bug = 1;
+ $failure_start = time;
+ }
+ }
+
+ if ($bug && defined($stop_after_failure) &&
+ $stop_after_failure >= 0) {
+ my $now = time;
+ if ($now - $failure_start >= $stop_after_failure) {
+ doprint "Test forced to stop after $stop_after_failure seconds after failure\n";
+ last;
+ }
+ }
+
+ if ($full_line =~ /\[ end of backtrace testing \]/) {
+ $skip_call_trace = 0;
+ }
+
+ if ($full_line =~ /Kernel panic -/) {
+ $bug = 1;
+ }
+
+ if ($line =~ /\n/) {
+ $full_line = "";
+ }
+ }
+
+ close(DMESG);
+
+ if ($bug) {
+ return 0 if ($in_bisect);
+ fail "failed - got a bug report" and return 0;
+ }
+
+ if (!$booted) {
+ return 0 if ($in_bisect);
+ fail "failed - never got a boot prompt." and return 0;
+ }
+
+ return 1;
+}
+
+sub install {
+
+ run_scp "$outputdir/$build_target", "$target_image" or
+ dodie "failed to copy image";
+
+ my $install_mods = 0;
+
+ # should we process modules?
+ $install_mods = 0;
+ open(IN, "$output_config") or dodie("Can't read config file");
+ while (<IN>) {
+ if (/CONFIG_MODULES(=y)?/) {
+ $install_mods = 1 if (defined($1));
+ last;
+ }
+ }
+ close(IN);
+
+ if (!$install_mods) {
+ doprint "No modules needed\n";
+ return;
+ }
+
+ run_command "$make INSTALL_MOD_PATH=$tmpdir modules_install" or
+ dodie "Failed to install modules";
+
+ my $modlib = "/lib/modules/$version";
+ my $modtar = "ktest-mods.tar.bz2";
+
+ run_ssh "rm -rf $modlib" or
+ dodie "failed to remove old mods: $modlib";
+
+ # would be nice if scp -r did not follow symbolic links
+ run_command "cd $tmpdir && tar -cjf $modtar lib/modules/$version" or
+ dodie "making tarball";
+
+ run_scp "$tmpdir/$modtar", "/tmp" or
+ dodie "failed to copy modules";
+
+ unlink "$tmpdir/$modtar";
+
+ run_ssh "'(cd / && tar xf /tmp/$modtar)'" or
+ dodie "failed to tar modules";
+
+ run_ssh "rm -f /tmp/$modtar";
+
+ return if (!defined($post_install));
+
+ my $cp_post_install = $post_install;
+ $cp_post_install = s/\$KERNEL_VERSION/$version/g;
+ run_command "$cp_post_install" or
+ dodie "Failed to run post install";
+}
+
+sub check_buildlog {
+ my ($patch) = @_;
+
+ my @files = `git show $patch | diffstat -l`;
+
+ open(IN, "git show $patch |") or
+ dodie "failed to show $patch";
+ while (<IN>) {
+ if (m,^--- a/(.*),) {
+ chomp $1;
+ $files[$#files] = $1;
+ }
+ }
+ close(IN);
+
+ open(IN, $buildlog) or dodie "Can't open $buildlog";
+ while (<IN>) {
+ if (/^\s*(.*?):.*(warning|error)/) {
+ my $err = $1;
+ foreach my $file (@files) {
+ my $fullpath = "$builddir/$file";
+ if ($file eq $err || $fullpath eq $err) {
+ fail "$file built with warnings" and return 0;
+ }
+ }
+ }
+ }
+ close(IN);
+
+ return 1;
+}
+
+sub build {
+ my ($type) = @_;
+ my $defconfig = "";
+
+ unlink $buildlog;
+
+ if ($type =~ /^useconfig:(.*)/) {
+ run_command "cp $1 $output_config" or
+ dodie "could not copy $1 to .config";
+
+ $type = "oldconfig";
+ }
+
+ # old config can ask questions
+ if ($type eq "oldconfig") {
+ $type = "oldnoconfig";
+
+ # allow for empty configs
+ run_command "touch $output_config";
+
+ run_command "mv $output_config $outputdir/config_temp" or
+ dodie "moving .config";
+
+ if (!$noclean && !run_command "$make mrproper") {
+ dodie "make mrproper";
+ }
+
+ run_command "mv $outputdir/config_temp $output_config" or
+ dodie "moving config_temp";
+
+ } elsif (!$noclean) {
+ unlink "$output_config";
+ run_command "$make mrproper" or
+ dodie "make mrproper";
+ }
+
+ # add something to distinguish this build
+ open(OUT, "> $outputdir/localversion") or dodie("Can't make localversion file");
+ print OUT "$localversion\n";
+ close(OUT);
+
+ if (defined($minconfig)) {
+ $defconfig = "KCONFIG_ALLCONFIG=$minconfig";
+ }
+
+ run_command "$defconfig $make $type" or
+ dodie "failed make config";
+
+ $redirect = "$buildlog";
+ if (!run_command "$make $build_options") {
+ undef $redirect;
+ # bisect may need this to pass
+ return 0 if ($in_bisect);
+ fail "failed build" and return 0;
+ }
+ undef $redirect;
+
+ return 1;
+}
+
+sub halt {
+ if (!run_ssh "halt" or defined($power_off)) {
+ if (defined($poweroff_after_halt)) {
+ sleep $poweroff_after_halt;
+ run_command "$power_off";
+ }
+ } else {
+ # nope? the zap it!
+ run_command "$power_off";
+ }
+}
+
+sub success {
+ my ($i) = @_;
+
+ $successes++;
+
+ doprint "\n\n*******************************************\n";
+ doprint "*******************************************\n";
+ doprint "KTEST RESULT: TEST $i SUCCESS!!!! **\n";
+ doprint "*******************************************\n";
+ doprint "*******************************************\n";
+
+ if ($i != $opt{"NUM_TESTS"} && !do_not_reboot) {
+ doprint "Reboot and wait $sleep_time seconds\n";
+ reboot;
+ start_monitor;
+ wait_for_monitor $sleep_time;
+ end_monitor;
+ }
+}
+
+sub get_version {
+ # get the release name
+ doprint "$make kernelrelease ... ";
+ $version = `$make kernelrelease | tail -1`;
+ chomp($version);
+ doprint "$version\n";
+}
+
+sub child_run_test {
+ my $failed = 0;
+
+ # child should have no power
+ $reboot_on_error = 0;
+ $poweroff_on_error = 0;
+ $die_on_failure = 1;
+
+ run_command $run_test or $failed = 1;
+ exit $failed;
+}
+
+my $child_done;
+
+sub child_finished {
+ $child_done = 1;
+}
+
+sub do_run_test {
+ my $child_pid;
+ my $child_exit;
+ my $line;
+ my $full_line;
+ my $bug = 0;
+
+ wait_for_monitor 1;
+
+ doprint "run test $run_test\n";
+
+ $child_done = 0;
+
+ $SIG{CHLD} = qw(child_finished);
+
+ $child_pid = fork;
+
+ child_run_test if (!$child_pid);
+
+ $full_line = "";
+
+ do {
+ $line = wait_for_input($monitor_fp, 1);
+ if (defined($line)) {
+
+ # we are not guaranteed to get a full line
+ $full_line .= $line;
+
+ if ($full_line =~ /call trace:/i) {
+ $bug = 1;
+ }
+
+ if ($full_line =~ /Kernel panic -/) {
+ $bug = 1;
+ }
+
+ if ($line =~ /\n/) {
+ $full_line = "";
+ }
+ }
+ } while (!$child_done && !$bug);
+
+ if ($bug) {
+ doprint "Detected kernel crash!\n";
+ # kill the child with extreme prejudice
+ kill 9, $child_pid;
+ }
+
+ waitpid $child_pid, 0;
+ $child_exit = $?;
+
+ if ($bug || $child_exit) {
+ return 0 if $in_bisect;
+ fail "test failed" and return 0;
+ }
+ return 1;
+}
+
+sub run_git_bisect {
+ my ($command) = @_;
+
+ doprint "$command ... ";
+
+ my $output = `$command 2>&1`;
+ my $ret = $?;
+
+ logit $output;
+
+ if ($ret) {
+ doprint "FAILED\n";
+ dodie "Failed to git bisect";
+ }
+
+ doprint "SUCCESS\n";
+ if ($output =~ m/^(Bisecting: .*\(roughly \d+ steps?\))\s+\[([[:xdigit:]]+)\]/) {
+ doprint "$1 [$2]\n";
+ } elsif ($output =~ m/^([[:xdigit:]]+) is the first bad commit/) {
+ $bisect_bad = $1;
+ doprint "Found bad commit... $1\n";
+ return 0;
+ } else {
+ # we already logged it, just print it now.
+ print $output;
+ }
+
+ return 1;
+}
+
+# returns 1 on success, 0 on failure
+sub run_bisect_test {
+ my ($type, $buildtype) = @_;
+
+ my $failed = 0;
+ my $result;
+ my $output;
+ my $ret;
+
+ $in_bisect = 1;
+
+ build $buildtype or $failed = 1;
+
+ if ($type ne "build") {
+ dodie "Failed on build" if $failed;
+
+ # Now boot the box
+ get_grub_index;
+ get_version;
+ install;
+
+ start_monitor;
+ monitor or $failed = 1;
+
+ if ($type ne "boot") {
+ dodie "Failed on boot" if $failed;
+
+ do_run_test or $failed = 1;
+ }
+ end_monitor;
+ }
+
+ if ($failed) {
+ $result = 0;
+
+ # reboot the box to a good kernel
+ if ($type ne "build") {
+ doprint "Reboot and sleep $bisect_sleep_time seconds\n";
+ reboot;
+ start_monitor;
+ wait_for_monitor $bisect_sleep_time;
+ end_monitor;
+ }
+ } else {
+ $result = 1;
+ }
+ $in_bisect = 0;
+
+ return $result;
+}
+
+sub run_bisect {
+ my ($type) = @_;
+ my $buildtype = "oldconfig";
+
+ # We should have a minconfig to use?
+ if (defined($minconfig)) {
+ $buildtype = "useconfig:$minconfig";
+ }
+
+ my $ret = run_bisect_test $type, $buildtype;
+
+
+ # Are we looking for where it worked, not failed?
+ if ($reverse_bisect) {
+ $ret = !$ret;
+ }
+
+ if ($ret) {
+ return "good";
+ } else {
+ return "bad";
+ }
+}
+
+sub bisect {
+ my ($i) = @_;
+
+ my $result;
+
+ die "BISECT_GOOD[$i] not defined\n" if (!defined($opt{"BISECT_GOOD[$i]"}));
+ die "BISECT_BAD[$i] not defined\n" if (!defined($opt{"BISECT_BAD[$i]"}));
+ die "BISECT_TYPE[$i] not defined\n" if (!defined($opt{"BISECT_TYPE[$i]"}));
+
+ my $good = $opt{"BISECT_GOOD[$i]"};
+ my $bad = $opt{"BISECT_BAD[$i]"};
+ my $type = $opt{"BISECT_TYPE[$i]"};
+ my $start = $opt{"BISECT_START[$i]"};
+ my $replay = $opt{"BISECT_REPLAY[$i]"};
+
+ # convert to true sha1's
+ $good = get_sha1($good);
+ $bad = get_sha1($bad);
+
+ if (defined($opt{"BISECT_REVERSE[$i]"}) &&
+ $opt{"BISECT_REVERSE[$i]"} == 1) {
+ doprint "Performing a reverse bisect (bad is good, good is bad!)\n";
+ $reverse_bisect = 1;
+ } else {
+ $reverse_bisect = 0;
+ }
+
+ # Can't have a test without having a test to run
+ if ($type eq "test" && !defined($run_test)) {
+ $type = "boot";
+ }
+
+ my $check = $opt{"BISECT_CHECK[$i]"};
+ if (defined($check) && $check ne "0") {
+
+ # get current HEAD
+ my $head = get_sha1("HEAD");
+
+ if ($check ne "good") {
+ doprint "TESTING BISECT BAD [$bad]\n";
+ run_command "git checkout $bad" or
+ die "Failed to checkout $bad";
+
+ $result = run_bisect $type;
+
+ if ($result ne "bad") {
+ fail "Tested BISECT_BAD [$bad] and it succeeded" and return 0;
+ }
+ }
+
+ if ($check ne "bad") {
+ doprint "TESTING BISECT GOOD [$good]\n";
+ run_command "git checkout $good" or
+ die "Failed to checkout $good";
+
+ $result = run_bisect $type;
+
+ if ($result ne "good") {
+ fail "Tested BISECT_GOOD [$good] and it failed" and return 0;
+ }
+ }
+
+ # checkout where we started
+ run_command "git checkout $head" or
+ die "Failed to checkout $head";
+ }
+
+ run_command "git bisect start" or
+ dodie "could not start bisect";
+
+ run_command "git bisect good $good" or
+ dodie "could not set bisect good to $good";
+
+ run_git_bisect "git bisect bad $bad" or
+ dodie "could not set bisect bad to $bad";
+
+ if (defined($replay)) {
+ run_command "git bisect replay $replay" or
+ dodie "failed to run replay";
+ }
+
+ if (defined($start)) {
+ run_command "git checkout $start" or
+ dodie "failed to checkout $start";
+ }
+
+ my $test;
+ do {
+ $result = run_bisect $type;
+ $test = run_git_bisect "git bisect $result";
+ } while ($test);
+
+ run_command "git bisect log" or
+ dodie "could not capture git bisect log";
+
+ run_command "git bisect reset" or
+ dodie "could not reset git bisect";
+
+ doprint "Bad commit was [$bisect_bad]\n";
+
+ success $i;
+}
+
+my %config_ignore;
+my %config_set;
+
+my %config_list;
+my %null_config;
+
+my %dependency;
+
+sub process_config_ignore {
+ my ($config) = @_;
+
+ open (IN, $config)
+ or dodie "Failed to read $config";
+
+ while (<IN>) {
+ if (/^(.*?(CONFIG\S*)(=.*| is not set))/) {
+ $config_ignore{$2} = $1;
+ }
+ }
+
+ close(IN);
+}
+
+sub read_current_config {
+ my ($config_ref) = @_;
+
+ %{$config_ref} = ();
+ undef %{$config_ref};
+
+ my @key = keys %{$config_ref};
+ if ($#key >= 0) {
+ print "did not delete!\n";
+ exit;
+ }
+ open (IN, "$output_config");
+
+ while (<IN>) {
+ if (/^(CONFIG\S+)=(.*)/) {
+ ${$config_ref}{$1} = $2;
+ }
+ }
+ close(IN);
+}
+
+sub get_dependencies {
+ my ($config) = @_;
+
+ my $arr = $dependency{$config};
+ if (!defined($arr)) {
+ return ();
+ }
+
+ my @deps = @{$arr};
+
+ foreach my $dep (@{$arr}) {
+ print "ADD DEP $dep\n";
+ @deps = (@deps, get_dependencies $dep);
+ }
+
+ return @deps;
+}
+
+sub create_config {
+ my @configs = @_;
+
+ open(OUT, ">$output_config") or dodie "Can not write to $output_config";
+
+ foreach my $config (@configs) {
+ print OUT "$config_set{$config}\n";
+ my @deps = get_dependencies $config;
+ foreach my $dep (@deps) {
+ print OUT "$config_set{$dep}\n";
+ }
+ }
+
+ foreach my $config (keys %config_ignore) {
+ print OUT "$config_ignore{$config}\n";
+ }
+ close(OUT);
+
+# exit;
+ run_command "$make oldnoconfig" or
+ dodie "failed make config oldconfig";
+
+}
+
+sub compare_configs {
+ my (%a, %b) = @_;
+
+ foreach my $item (keys %a) {
+ if (!defined($b{$item})) {
+ print "diff $item\n";
+ return 1;
+ }
+ delete $b{$item};
+ }
+
+ my @keys = keys %b;
+ if ($#keys) {
+ print "diff2 $keys[0]\n";
+ }
+ return -1 if ($#keys >= 0);
+
+ return 0;
+}
+
+sub run_config_bisect_test {
+ my ($type) = @_;
+
+ return run_bisect_test $type, "oldconfig";
+}
+
+sub process_passed {
+ my (%configs) = @_;
+
+ doprint "These configs had no failure: (Enabling them for further compiles)\n";
+ # Passed! All these configs are part of a good compile.
+ # Add them to the min options.
+ foreach my $config (keys %configs) {
+ if (defined($config_list{$config})) {
+ doprint " removing $config\n";
+ $config_ignore{$config} = $config_list{$config};
+ delete $config_list{$config};
+ }
+ }
+ doprint "config copied to $outputdir/config_good\n";
+ run_command "cp -f $output_config $outputdir/config_good";
+}
+
+sub process_failed {
+ my ($config) = @_;
+
+ doprint "\n\n***************************************\n";
+ doprint "Found bad config: $config\n";
+ doprint "***************************************\n\n";
+}
+
+sub run_config_bisect {
+
+ my @start_list = keys %config_list;
+
+ if ($#start_list < 0) {
+ doprint "No more configs to test!!!\n";
+ return -1;
+ }
+
+ doprint "***** RUN TEST ***\n";
+ my $type = $opt{"CONFIG_BISECT_TYPE[$iteration]"};
+ my $ret;
+ my %current_config;
+
+ my $count = $#start_list + 1;
+ doprint " $count configs to test\n";
+
+ my $half = int($#start_list / 2);
+
+ do {
+ my @tophalf = @start_list[0 .. $half];
+
+ create_config @tophalf;
+ read_current_config \%current_config;
+
+ $count = $#tophalf + 1;
+ doprint "Testing $count configs\n";
+ my $found = 0;
+ # make sure we test something
+ foreach my $config (@tophalf) {
+ if (defined($current_config{$config})) {
+ logit " $config\n";
+ $found = 1;
+ }
+ }
+ if (!$found) {
+ # try the other half
+ doprint "Top half produced no set configs, trying bottom half\n";
+ @tophalf = @start_list[$half .. $#start_list];
+ create_config @tophalf;
+ read_current_config \%current_config;
+ foreach my $config (@tophalf) {
+ if (defined($current_config{$config})) {
+ logit " $config\n";
+ $found = 1;
+ }
+ }
+ if (!$found) {
+ doprint "Failed: Can't make new config with current configs\n";
+ foreach my $config (@start_list) {
+ doprint " CONFIG: $config\n";
+ }
+ return -1;
+ }
+ $count = $#tophalf + 1;
+ doprint "Testing $count configs\n";
+ }
+
+ $ret = run_config_bisect_test $type;
+
+ if ($ret) {
+ process_passed %current_config;
+ return 0;
+ }
+
+ doprint "This config had a failure.\n";
+ doprint "Removing these configs that were not set in this config:\n";
+ doprint "config copied to $outputdir/config_bad\n";
+ run_command "cp -f $output_config $outputdir/config_bad";
+
+ # A config exists in this group that was bad.
+ foreach my $config (keys %config_list) {
+ if (!defined($current_config{$config})) {
+ doprint " removing $config\n";
+ delete $config_list{$config};
+ }
+ }
+
+ @start_list = @tophalf;
+
+ if ($#start_list == 0) {
+ process_failed $start_list[0];
+ return 1;
+ }
+
+ # remove half the configs we are looking at and see if
+ # they are good.
+ $half = int($#start_list / 2);
+ } while ($half > 0);
+
+ # we found a single config, try it again
+ my @tophalf = @start_list[0 .. 0];
+
+ $ret = run_config_bisect_test $type;
+ if ($ret) {
+ process_passed %current_config;
+ return 0;
+ }
+
+ process_failed $start_list[0];
+ return 1;
+}
+
+sub config_bisect {
+ my ($i) = @_;
+
+ my $start_config = $opt{"CONFIG_BISECT[$i]"};
+
+ my $tmpconfig = "$tmpdir/use_config";
+
+ # Make the file with the bad config and the min config
+ if (defined($minconfig)) {
+ # read the min config for things to ignore
+ run_command "cp $minconfig $tmpconfig" or
+ dodie "failed to copy $minconfig to $tmpconfig";
+ } else {
+ unlink $tmpconfig;
+ }
+
+ # Add other configs
+ if (defined($addconfig)) {
+ run_command "cat $addconfig >> $tmpconfig" or
+ dodie "failed to append $addconfig";
+ }
+
+ my $defconfig = "";
+ if (-f $tmpconfig) {
+ $defconfig = "KCONFIG_ALLCONFIG=$tmpconfig";
+ process_config_ignore $tmpconfig;
+ }
+
+ # now process the start config
+ run_command "cp $start_config $output_config" or
+ dodie "failed to copy $start_config to $output_config";
+
+ # read directly what we want to check
+ my %config_check;
+ open (IN, $output_config)
+ or dodie "faied to open $output_config";
+
+ while (<IN>) {
+ if (/^((CONFIG\S*)=.*)/) {
+ $config_check{$2} = $1;
+ }
+ }
+ close(IN);
+
+ # Now run oldconfig with the minconfig (and addconfigs)
+ run_command "$defconfig $make oldnoconfig" or
+ dodie "failed make config oldconfig";
+
+ # check to see what we lost (or gained)
+ open (IN, $output_config)
+ or dodie "Failed to read $start_config";
+
+ my %removed_configs;
+ my %added_configs;
+
+ while (<IN>) {
+ if (/^((CONFIG\S*)=.*)/) {
+ # save off all options
+ $config_set{$2} = $1;
+ if (defined($config_check{$2})) {
+ if (defined($config_ignore{$2})) {
+ $removed_configs{$2} = $1;
+ } else {
+ $config_list{$2} = $1;
+ }
+ } elsif (!defined($config_ignore{$2})) {
+ $added_configs{$2} = $1;
+ $config_list{$2} = $1;
+ }
+ }
+ }
+ close(IN);
+
+ my @confs = keys %removed_configs;
+ if ($#confs >= 0) {
+ doprint "Configs overridden by default configs and removed from check:\n";
+ foreach my $config (@confs) {
+ doprint " $config\n";
+ }
+ }
+ @confs = keys %added_configs;
+ if ($#confs >= 0) {
+ doprint "Configs appearing in make oldconfig and added:\n";
+ foreach my $config (@confs) {
+ doprint " $config\n";
+ }
+ }
+
+ my %config_test;
+ my $once = 0;
+
+ # Sometimes kconfig does weird things. We must make sure
+ # that the config we autocreate has everything we need
+ # to test, otherwise we may miss testing configs, or
+ # may not be able to create a new config.
+ # Here we create a config with everything set.
+ create_config (keys %config_list);
+ read_current_config \%config_test;
+ foreach my $config (keys %config_list) {
+ if (!defined($config_test{$config})) {
+ if (!$once) {
+ $once = 1;
+ doprint "Configs not produced by kconfig (will not be checked):\n";
+ }
+ doprint " $config\n";
+ delete $config_list{$config};
+ }
+ }
+ my $ret;
+ do {
+ $ret = run_config_bisect;
+ } while (!$ret);
+
+ return $ret if ($ret < 0);
+
+ success $i;
+}
+
+sub patchcheck {
+ my ($i) = @_;
+
+ die "PATCHCHECK_START[$i] not defined\n"
+ if (!defined($opt{"PATCHCHECK_START[$i]"}));
+ die "PATCHCHECK_TYPE[$i] not defined\n"
+ if (!defined($opt{"PATCHCHECK_TYPE[$i]"}));
+
+ my $start = $opt{"PATCHCHECK_START[$i]"};
+
+ my $end = "HEAD";
+ if (defined($opt{"PATCHCHECK_END[$i]"})) {
+ $end = $opt{"PATCHCHECK_END[$i]"};
+ }
+
+ # Get the true sha1's since we can use things like HEAD~3
+ $start = get_sha1($start);
+ $end = get_sha1($end);
+
+ my $type = $opt{"PATCHCHECK_TYPE[$i]"};
+
+ # Can't have a test without having a test to run
+ if ($type eq "test" && !defined($run_test)) {
+ $type = "boot";
+ }
+
+ open (IN, "git log --pretty=oneline $end|") or
+ dodie "could not get git list";
+
+ my @list;
+
+ while (<IN>) {
+ chomp;
+ $list[$#list+1] = $_;
+ last if (/^$start/);
+ }
+ close(IN);
+
+ if ($list[$#list] !~ /^$start/) {
+ fail "SHA1 $start not found";
+ }
+
+ # go backwards in the list
+ @list = reverse @list;
+
+ my $save_clean = $noclean;
+
+ $in_patchcheck = 1;
+ foreach my $item (@list) {
+ my $sha1 = $item;
+ $sha1 =~ s/^([[:xdigit:]]+).*/$1/;
+
+ doprint "\nProcessing commit $item\n\n";
+
+ run_command "git checkout $sha1" or
+ die "Failed to checkout $sha1";
+
+ # only clean on the first and last patch
+ if ($item eq $list[0] ||
+ $item eq $list[$#list]) {
+ $noclean = $save_clean;
+ } else {
+ $noclean = 1;
+ }
+
+ if (defined($minconfig)) {
+ build "useconfig:$minconfig" or return 0;
+ } else {
+ # ?? no config to use?
+ build "oldconfig" or return 0;
+ }
+
+ check_buildlog $sha1 or return 0;
+
+ next if ($type eq "build");
+
+ get_grub_index;
+ get_version;
+ install;
+
+ my $failed = 0;
+
+ start_monitor;
+ monitor or $failed = 1;
+
+ if (!$failed && $type ne "boot"){
+ do_run_test or $failed = 1;
+ }
+ end_monitor;
+ return 0 if ($failed);
+
+ }
+ $in_patchcheck = 0;
+ success $i;
+
+ return 1;
+}
+
+$#ARGV < 1 or die "ktest.pl version: $VERSION\n usage: ktest.pl config-file\n";
+
+if ($#ARGV == 0) {
+ $ktest_config = $ARGV[0];
+ if (! -f $ktest_config) {
+ print "$ktest_config does not exist.\n";
+ my $ans;
+ for (;;) {
+ print "Create it? [Y/n] ";
+ $ans = <STDIN>;
+ chomp $ans;
+ if ($ans =~ /^\s*$/) {
+ $ans = "y";
+ }
+ last if ($ans =~ /^y$/i || $ans =~ /^n$/i);
+ print "Please answer either 'y' or 'n'.\n";
+ }
+ if ($ans !~ /^y$/i) {
+ exit 0;
+ }
+ }
+} else {
+ $ktest_config = "ktest.conf";
+}
+
+if (! -f $ktest_config) {
+ open(OUT, ">$ktest_config") or die "Can not create $ktest_config";
+ print OUT << "EOF"
+# Generated by ktest.pl
+#
+# Define each test with TEST_START
+# The config options below it will override the defaults
+TEST_START
+
+DEFAULTS
+EOF
+;
+ close(OUT);
+}
+read_config $ktest_config;
+
+# Append any configs entered in manually to the config file.
+my @new_configs = keys %entered_configs;
+if ($#new_configs >= 0) {
+ print "\nAppending entered in configs to $ktest_config\n";
+ open(OUT, ">>$ktest_config") or die "Can not append to $ktest_config";
+ foreach my $config (@new_configs) {
+ print OUT "$config = $entered_configs{$config}\n";
+ $opt{$config} = $entered_configs{$config};
+ }
+}
+
+if ($opt{"CLEAR_LOG"} && defined($opt{"LOG_FILE"})) {
+ unlink $opt{"LOG_FILE"};
+}
+
+doprint "\n\nSTARTING AUTOMATED TESTS\n\n";
+
+for (my $i = 0, my $repeat = 1; $i <= $opt{"NUM_TESTS"}; $i += $repeat) {
+
+ if (!$i) {
+ doprint "DEFAULT OPTIONS:\n";
+ } else {
+ doprint "\nTEST $i OPTIONS";
+ if (defined($repeat_tests{$i})) {
+ $repeat = $repeat_tests{$i};
+ doprint " ITERATE $repeat";
+ }
+ doprint "\n";
+ }
+
+ foreach my $option (sort keys %opt) {
+
+ if ($option =~ /\[(\d+)\]$/) {
+ next if ($i != $1);
+ } else {
+ next if ($i);
+ }
+
+ doprint "$option = $opt{$option}\n";
+ }
+}
+
+sub set_test_option {
+ my ($name, $i) = @_;
+
+ my $option = "$name\[$i\]";
+
+ if (defined($opt{$option})) {
+ return $opt{$option};
+ }
+
+ foreach my $test (keys %repeat_tests) {
+ if ($i >= $test &&
+ $i < $test + $repeat_tests{$test}) {
+ $option = "$name\[$test\]";
+ if (defined($opt{$option})) {
+ return $opt{$option};
+ }
+ }
+ }
+
+ if (defined($opt{$name})) {
+ return $opt{$name};
+ }
+
+ return undef;
+}
+
+# First we need to do is the builds
+for (my $i = 1; $i <= $opt{"NUM_TESTS"}; $i++) {
+
+ $iteration = $i;
+
+ my $makecmd = set_test_option("MAKE_CMD", $i);
+
+ $machine = set_test_option("MACHINE", $i);
+ $ssh_user = set_test_option("SSH_USER", $i);
+ $tmpdir = set_test_option("TMP_DIR", $i);
+ $outputdir = set_test_option("OUTPUT_DIR", $i);
+ $builddir = set_test_option("BUILD_DIR", $i);
+ $test_type = set_test_option("TEST_TYPE", $i);
+ $build_type = set_test_option("BUILD_TYPE", $i);
+ $build_options = set_test_option("BUILD_OPTIONS", $i);
+ $power_cycle = set_test_option("POWER_CYCLE", $i);
+ $reboot = set_test_option("REBOOT", $i);
+ $noclean = set_test_option("BUILD_NOCLEAN", $i);
+ $minconfig = set_test_option("MIN_CONFIG", $i);
+ $run_test = set_test_option("TEST", $i);
+ $addconfig = set_test_option("ADD_CONFIG", $i);
+ $reboot_type = set_test_option("REBOOT_TYPE", $i);
+ $grub_menu = set_test_option("GRUB_MENU", $i);
+ $post_install = set_test_option("POST_INSTALL", $i);
+ $reboot_script = set_test_option("REBOOT_SCRIPT", $i);
+ $reboot_on_error = set_test_option("REBOOT_ON_ERROR", $i);
+ $poweroff_on_error = set_test_option("POWEROFF_ON_ERROR", $i);
+ $die_on_failure = set_test_option("DIE_ON_FAILURE", $i);
+ $power_off = set_test_option("POWER_OFF", $i);
+ $powercycle_after_reboot = set_test_option("POWERCYCLE_AFTER_REBOOT", $i);
+ $poweroff_after_halt = set_test_option("POWEROFF_AFTER_HALT", $i);
+ $sleep_time = set_test_option("SLEEP_TIME", $i);
+ $bisect_sleep_time = set_test_option("BISECT_SLEEP_TIME", $i);
+ $store_failures = set_test_option("STORE_FAILURES", $i);
+ $timeout = set_test_option("TIMEOUT", $i);
+ $booted_timeout = set_test_option("BOOTED_TIMEOUT", $i);
+ $console = set_test_option("CONSOLE", $i);
+ $success_line = set_test_option("SUCCESS_LINE", $i);
+ $stop_after_success = set_test_option("STOP_AFTER_SUCCESS", $i);
+ $stop_after_failure = set_test_option("STOP_AFTER_FAILURE", $i);
+ $build_target = set_test_option("BUILD_TARGET", $i);
+ $ssh_exec = set_test_option("SSH_EXEC", $i);
+ $scp_to_target = set_test_option("SCP_TO_TARGET", $i);
+ $target_image = set_test_option("TARGET_IMAGE", $i);
+ $localversion = set_test_option("LOCALVERSION", $i);
+
+ chdir $builddir || die "can't change directory to $builddir";
+
+ if (!-d $tmpdir) {
+ mkpath($tmpdir) or
+ die "can't create $tmpdir";
+ }
+
+ $ENV{"SSH_USER"} = $ssh_user;
+ $ENV{"MACHINE"} = $machine;
+
+ $target = "$ssh_user\@$machine";
+
+ $buildlog = "$tmpdir/buildlog-$machine";
+ $dmesg = "$tmpdir/dmesg-$machine";
+ $make = "$makecmd O=$outputdir";
+ $output_config = "$outputdir/.config";
+
+ if ($reboot_type eq "grub") {
+ dodie "GRUB_MENU not defined" if (!defined($grub_menu));
+ } elsif (!defined($reboot_script)) {
+ dodie "REBOOT_SCRIPT not defined"
+ }
+
+ my $run_type = $build_type;
+ if ($test_type eq "patchcheck") {
+ $run_type = $opt{"PATCHCHECK_TYPE[$i]"};
+ } elsif ($test_type eq "bisect") {
+ $run_type = $opt{"BISECT_TYPE[$i]"};
+ } elsif ($test_type eq "config_bisect") {
+ $run_type = $opt{"CONFIG_BISECT_TYPE[$i]"};
+ }
+
+ # mistake in config file?
+ if (!defined($run_type)) {
+ $run_type = "ERROR";
+ }
+
+ doprint "\n\n";
+ doprint "RUNNING TEST $i of $opt{NUM_TESTS} with option $test_type $run_type\n\n";
+
+ unlink $dmesg;
+ unlink $buildlog;
+
+ if (!defined($minconfig)) {
+ $minconfig = $addconfig;
+
+ } elsif (defined($addconfig)) {
+ run_command "cat $addconfig $minconfig > $tmpdir/add_config" or
+ dodie "Failed to create temp config";
+ $minconfig = "$tmpdir/add_config";
+ }
+
+ my $checkout = $opt{"CHECKOUT[$i]"};
+ if (defined($checkout)) {
+ run_command "git checkout $checkout" or
+ die "failed to checkout $checkout";
+ }
+
+ if ($test_type eq "bisect") {
+ bisect $i;
+ next;
+ } elsif ($test_type eq "config_bisect") {
+ config_bisect $i;
+ next;
+ } elsif ($test_type eq "patchcheck") {
+ patchcheck $i;
+ next;
+ }
+
+ if ($build_type ne "nobuild") {
+ build $build_type or next;
+ }
+
+ if ($test_type ne "build") {
+ get_grub_index;
+ get_version;
+ install;
+
+ my $failed = 0;
+ start_monitor;
+ monitor or $failed = 1;;
+
+ if (!$failed && $test_type ne "boot" && defined($run_test)) {
+ do_run_test or $failed = 1;
+ }
+ end_monitor;
+ next if ($failed);
+ }
+
+ success $i;
+}
+
+if ($opt{"POWEROFF_ON_SUCCESS"}) {
+ halt;
+} elsif ($opt{"REBOOT_ON_SUCCESS"} && !do_not_reboot) {
+ reboot;
+}
+
+doprint "\n $successes of $opt{NUM_TESTS} tests were successful\n\n";
+
+exit 0;
diff --git a/tools/testing/ktest/sample.conf b/tools/testing/ktest/sample.conf
new file mode 100644
index 0000000..3408c59
--- /dev/null
+++ b/tools/testing/ktest/sample.conf
@@ -0,0 +1,622 @@
+#
+# Config file for ktest.pl
+#
+# Note, all paths must be absolute
+#
+
+# Options set in the beginning of the file are considered to be
+# default options. These options can be overriden by test specific
+# options, with the following exceptions:
+#
+# LOG_FILE
+# CLEAR_LOG
+# POWEROFF_ON_SUCCESS
+# REBOOT_ON_SUCCESS
+#
+# Test specific options are set after the label:
+#
+# TEST_START
+#
+# The options after a TEST_START label are specific to that test.
+# Each TEST_START label will set up a new test. If you want to
+# perform a test more than once, you can add the ITERATE label
+# to it followed by the number of times you want that test
+# to iterate. If the ITERATE is left off, the test will only
+# be performed once.
+#
+# TEST_START ITERATE 10
+#
+# You can skip a test by adding SKIP (before or after the ITERATE
+# and number)
+#
+# TEST_START SKIP
+#
+# TEST_START SKIP ITERATE 10
+#
+# TEST_START ITERATE 10 SKIP
+#
+# The SKIP label causes the options and the test itself to be ignored.
+# This is useful to set up several different tests in one config file, and
+# only enabling the ones you want to use for a current test run.
+#
+# You can add default options anywhere in the file as well
+# with the DEFAULTS tag. This allows you to have default options
+# after the test options to keep the test options at the top
+# of the file. You can even place the DEFAULTS tag between
+# test cases (but not in the middle of a single test case)
+#
+# TEST_START
+# MIN_CONFIG = /home/test/config-test1
+#
+# DEFAULTS
+# MIN_CONFIG = /home/test/config-default
+#
+# TEST_START ITERATE 10
+#
+# The above will run the first test with MIN_CONFIG set to
+# /home/test/config-test-1. Then 10 tests will be executed
+# with MIN_CONFIG with /home/test/config-default.
+#
+# You can also disable defaults with the SKIP option
+#
+# DEFAULTS SKIP
+# MIN_CONFIG = /home/test/config-use-sometimes
+#
+# DEFAULTS
+# MIN_CONFIG = /home/test/config-most-times
+#
+# The above will ignore the first MIN_CONFIG. If you want to
+# use the first MIN_CONFIG, remove the SKIP from the first
+# DEFAULTS tag and add it to the second. Be careful, options
+# may only be declared once per test or default. If you have
+# the same option name under the same test or as default
+# ktest will fail to execute, and no tests will run.
+#
+
+
+#### Mandatory Default Options ####
+
+# These options must be in the default section, although most
+# may be overridden by test options.
+
+# The machine hostname that you will test
+#MACHINE = target
+
+# The box is expected to have ssh on normal bootup, provide the user
+# (most likely root, since you need privileged operations)
+#SSH_USER = root
+
+# The directory that contains the Linux source code
+#BUILD_DIR = /home/test/linux.git
+
+# The directory that the objects will be built
+# (can not be same as BUILD_DIR)
+#OUTPUT_DIR = /home/test/build/target
+
+# The location of the compiled file to copy to the target
+# (relative to OUTPUT_DIR)
+#BUILD_TARGET = arch/x86/boot/bzImage
+
+# The place to put your image on the test machine
+#TARGET_IMAGE = /boot/vmlinuz-test
+
+# A script or command to reboot the box
+#
+# Here is a digital loggers power switch example
+#POWER_CYCLE = wget --no-proxy -O /dev/null -q --auth-no-challenge 'http://admin:admin@power/outlet?5=CCL'
+#
+# Here is an example to reboot a virtual box on the current host
+# with the name "Guest".
+#POWER_CYCLE = virsh destroy Guest; sleep 5; virsh start Guest
+
+# The script or command that reads the console
+#
+# If you use ttywatch server, something like the following would work.
+#CONSOLE = nc -d localhost 3001
+#
+# For a virtual machine with guest name "Guest".
+#CONSOLE = virsh console Guest
+
+# Required version ending to differentiate the test
+# from other linux builds on the system.
+#LOCALVERSION = -test
+
+# The grub title name for the test kernel to boot
+# (Only mandatory if REBOOT_TYPE = grub)
+#
+# Note, ktest.pl will not update the grub menu.lst, you need to
+# manually add an option for the test. ktest.pl will search
+# the grub menu.lst for this option to find what kernel to
+# reboot into.
+#
+# For example, if in the /boot/grub/menu.lst the test kernel title has:
+# title Test Kernel
+# kernel vmlinuz-test
+#GRUB_MENU = Test Kernel
+
+# A script to reboot the target into the test kernel
+# (Only mandatory if REBOOT_TYPE = script)
+#REBOOT_SCRIPT =
+
+#### Optional Config Options (all have defaults) ####
+
+# Start a test setup. If you leave this off, all options
+# will be default and the test will run once.
+# This is a label and not really an option (it takes no value).
+# You can append ITERATE and a number after it to iterate the
+# test a number of times, or SKIP to ignore this test.
+#
+#TEST_START
+#TEST_START ITERATE 5
+#TEST_START SKIP
+
+# Have the following options as default again. Used after tests
+# have already been defined by TEST_START. Optionally, you can
+# just define all default options before the first TEST_START
+# and you do not need this option.
+#
+# This is a label and not really an option (it takes no value).
+# You can append SKIP to this label and the options within this
+# section will be ignored.
+#
+# DEFAULTS
+# DEFAULTS SKIP
+
+# The default test type (default test)
+# The test types may be:
+# build - only build the kernel, do nothing else
+# boot - build and boot the kernel
+# test - build, boot and if TEST is set, run the test script
+# (If TEST is not set, it defaults back to boot)
+# bisect - Perform a bisect on the kernel (see BISECT_TYPE below)
+# patchcheck - Do a test on a series of commits in git (see PATCHCHECK below)
+#TEST_TYPE = test
+
+# Test to run if there is a successful boot and TEST_TYPE is test.
+# Must exit with 0 on success and non zero on error
+# default (undefined)
+#TEST = ssh user@machine /root/run_test
+
+# The build type is any make config type or special command
+# (default randconfig)
+# nobuild - skip the clean and build step
+# useconfig:/path/to/config - use the given config and run
+# oldconfig on it.
+# This option is ignored if TEST_TYPE is patchcheck or bisect
+#BUILD_TYPE = randconfig
+
+# The make command (default make)
+# If you are building a 32bit x86 on a 64 bit host
+#MAKE_CMD = CC=i386-gcc AS=i386-as make ARCH=i386
+
+# Any build options for the make of the kernel (not for other makes, like configs)
+# (default "")
+#BUILD_OPTIONS = -j20
+
+# If you need an initrd, you can add a script or code here to install
+# it. The environment variable KERNEL_VERSION will be set to the
+# kernel version that is used. Remember to add the initrd line
+# to your grub menu.lst file.
+#
+# Here's a couple of examples to use:
+#POST_INSTALL = ssh user@target /sbin/mkinitrd --allow-missing -f /boot/initramfs-test.img $KERNEL_VERSION
+#
+# or on some systems:
+#POST_INSTALL = ssh user@target /sbin/dracut -f /boot/initramfs-test.img $KERNEL_VERSION
+
+# Way to reboot the box to the test kernel.
+# Only valid options so far are "grub" and "script"
+# (default grub)
+# If you specify grub, it will assume grub version 1
+# and will search in /boot/grub/menu.lst for the title $GRUB_MENU
+# and select that target to reboot to the kernel. If this is not
+# your setup, then specify "script" and have a command or script
+# specified in REBOOT_SCRIPT to boot to the target.
+#
+# The entry in /boot/grub/menu.lst must be entered in manually.
+# The test will not modify that file.
+#REBOOT_TYPE = grub
+
+# The min config that is needed to build for the machine
+# A nice way to create this is with the following:
+#
+# $ ssh target
+# $ lsmod > mymods
+# $ scp mymods host:/tmp
+# $ exit
+# $ cd linux.git
+# $ rm .config
+# $ make LSMOD=mymods localyesconfig
+# $ grep '^CONFIG' .config > /home/test/config-min
+#
+# If you want even less configs:
+#
+# log in directly to target (do not ssh)
+#
+# $ su
+# # lsmod | cut -d' ' -f1 | xargs rmmod
+#
+# repeat the above several times
+#
+# # lsmod > mymods
+# # reboot
+#
+# May need to reboot to get your network back to copy the mymods
+# to the host, and then remove the previous .config and run the
+# localyesconfig again. The CONFIG_MIN generated like this will
+# not guarantee network activity to the box so the TEST_TYPE of
+# test may fail.
+#
+# You might also want to set:
+# CONFIG_CMDLINE="<your options here>"
+# randconfig may set the above and override your real command
+# line options.
+# (default undefined)
+#MIN_CONFIG = /home/test/config-min
+
+# Sometimes there's options that just break the boot and
+# you do not care about. Here are a few:
+# # CONFIG_STAGING is not set
+# Staging drivers are horrible, and can break the build.
+# # CONFIG_SCSI_DEBUG is not set
+# SCSI_DEBUG may change your root partition
+# # CONFIG_KGDB_SERIAL_CONSOLE is not set
+# KGDB may cause oops waiting for a connection that's not there.
+# This option points to the file containing config options that will be prepended
+# to the MIN_CONFIG (or be the MIN_CONFIG if it is not set)
+#
+# Note, config options in MIN_CONFIG will override these options.
+#
+# (default undefined)
+#ADD_CONFIG = /home/test/config-broken
+
+# The location on the host where to write temp files
+# (default /tmp/ktest)
+#TMP_DIR = /tmp/ktest
+
+# Optional log file to write the status (recommended)
+# Note, this is a DEFAULT section only option.
+# (default undefined)
+#LOG_FILE = /home/test/logfiles/target.log
+
+# Remove old logfile if it exists before starting all tests.
+# Note, this is a DEFAULT section only option.
+# (default 0)
+#CLEAR_LOG = 0
+
+# Line to define a successful boot up in console output.
+# This is what the line contains, not the entire line. If you need
+# the entire line to match, then use regural expression syntax like:
+# (do not add any quotes around it)
+#
+# SUCCESS_LINE = ^MyBox Login:$
+#
+# (default "login:")
+#SUCCESS_LINE = login:
+
+# In case the console constantly fills the screen, having
+# a specified time to stop the test after success is recommended.
+# (in seconds)
+# (default 10)
+#STOP_AFTER_SUCCESS = 10
+
+# In case the console constantly fills the screen, having
+# a specified time to stop the test after failure is recommended.
+# (in seconds)
+# (default 60)
+#STOP_AFTER_FAILURE = 60
+
+# Stop testing if a build fails. If set, the script will end if
+# a failure is detected, otherwise it will save off the .config,
+# dmesg and bootlog in a directory called
+# MACHINE-TEST_TYPE_BUILD_TYPE-fail-yyyymmddhhmmss
+# if the STORE_FAILURES directory is set.
+# (default 1)
+# Note, even if this is set to zero, there are some errors that still
+# stop the tests.
+#DIE_ON_FAILURE = 1
+
+# Directory to store failure directories on failure. If this is not
+# set, DIE_ON_FAILURE=0 will not save off the .config, dmesg and
+# bootlog. This option is ignored if DIE_ON_FAILURE is not set.
+# (default undefined)
+#STORE_FAILURES = /home/test/failures
+
+# Build without doing a make mrproper, or removing .config
+# (default 0)
+#BUILD_NOCLEAN = 0
+
+# As the test reads the console, after it hits the SUCCESS_LINE
+# the time it waits for the monitor to settle down between reads
+# can usually be lowered.
+# (in seconds) (default 1)
+#BOOTED_TIMEOUT = 1
+
+# The timeout in seconds when we consider the box hung after
+# the console stop producing output. Be sure to leave enough
+# time here to get pass a reboot. Some machines may not produce
+# any console output for a long time during a reboot. You do
+# not want the test to fail just because the system was in
+# the process of rebooting to the test kernel.
+# (default 120)
+#TIMEOUT = 120
+
+# In between tests, a reboot of the box may occur, and this
+# is the time to wait for the console after it stops producing
+# output. Some machines may not produce a large lag on reboot
+# so this should accommodate it.
+# The difference between this and TIMEOUT, is that TIMEOUT happens
+# when rebooting to the test kernel. This sleep time happens
+# after a test has completed and we are about to start running
+# another test. If a reboot to the reliable kernel happens,
+# we wait SLEEP_TIME for the console to stop producing output
+# before starting the next test.
+# (default 60)
+#SLEEP_TIME = 60
+
+# The time in between bisects to sleep (in seconds)
+# (default 60)
+#BISECT_SLEEP_TIME = 60
+
+# Reboot the target box on error (default 0)
+#REBOOT_ON_ERROR = 0
+
+# Power off the target on error (ignored if REBOOT_ON_ERROR is set)
+# Note, this is a DEFAULT section only option.
+# (default 0)
+#POWEROFF_ON_ERROR = 0
+
+# Power off the target after all tests have completed successfully
+# Note, this is a DEFAULT section only option.
+# (default 0)
+#POWEROFF_ON_SUCCESS = 0
+
+# Reboot the target after all test completed successfully (default 1)
+# (ignored if POWEROFF_ON_SUCCESS is set)
+#REBOOT_ON_SUCCESS = 1
+
+# In case there are isses with rebooting, you can specify this
+# to always powercycle after this amount of time after calling
+# reboot.
+# Note, POWERCYCLE_AFTER_REBOOT = 0 does NOT disable it. It just
+# makes it powercycle immediately after rebooting. Do not define
+# it if you do not want it.
+# (default undefined)
+#POWERCYCLE_AFTER_REBOOT = 5
+
+# In case there's isses with halting, you can specify this
+# to always poweroff after this amount of time after calling
+# halt.
+# Note, POWEROFF_AFTER_HALT = 0 does NOT disable it. It just
+# makes it poweroff immediately after halting. Do not define
+# it if you do not want it.
+# (default undefined)
+#POWEROFF_AFTER_HALT = 20
+
+# A script or command to power off the box (default undefined)
+# Needed for POWEROFF_ON_ERROR and SUCCESS
+#
+# Example for digital loggers power switch:
+#POWER_OFF = wget --no-proxy -O /dev/null -q --auth-no-challenge 'http://admin:admin@power/outlet?5=OFF'
+#
+# Example for a virtual guest call "Guest".
+#POWER_OFF = virsh destroy Guest
+
+# The way to execute a command on the target
+# (default ssh $SSH_USER@$MACHINE $SSH_COMMAND";)
+# The variables SSH_USER, MACHINE and SSH_COMMAND are defined
+#SSH_EXEC = ssh $SSH_USER@$MACHINE $SSH_COMMAND";
+
+# The way to copy a file to the target
+# (default scp $SRC_FILE $SSH_USER@$MACHINE:$DST_FILE)
+# The variables SSH_USER, MACHINE, SRC_FILE and DST_FILE are defined.
+#SCP_TO_TARGET = scp $SRC_FILE $SSH_USER@$MACHINE:$DST_FILE
+
+# The nice way to reboot the target
+# (default ssh $SSH_USER@$MACHINE reboot)
+# The variables SSH_USER and MACHINE are defined.
+#REBOOT = ssh $SSH_USER@$MACHINE reboot
+
+#### Per test run options ####
+# The following options are only allowed in TEST_START sections.
+# They are ignored in the DEFAULTS sections.
+#
+# All of these are optional and undefined by default, although
+# some of these options are required for TEST_TYPE of patchcheck
+# and bisect.
+#
+#
+# CHECKOUT = branch
+#
+# If the BUILD_DIR is a git repository, then you can set this option
+# to checkout the given branch before running the TEST. If you
+# specify this for the first run, that branch will be used for
+# all preceding tests until a new CHECKOUT is set.
+#
+#
+#
+# For TEST_TYPE = patchcheck
+#
+# This expects the BUILD_DIR to be a git repository, and
+# will checkout the PATCHCHECK_START commit.
+#
+# The option BUILD_TYPE will be ignored.
+#
+# The MIN_CONFIG will be used for all builds of the patchcheck. The build type
+# used for patchcheck is oldconfig.
+#
+# PATCHCHECK_START is required and is the first patch to
+# test (the SHA1 of the commit). You may also specify anything
+# that git checkout allows (branch name, tage, HEAD~3).
+#
+# PATCHCHECK_END is the last patch to check (default HEAD)
+#
+# PATCHCHECK_TYPE is required and is the type of test to run:
+# build, boot, test.
+#
+# Note, the build test will look for warnings, if a warning occurred
+# in a file that a commit touches, the build will fail.
+#
+# If BUILD_NOCLEAN is set, then make mrproper will not be run on
+# any of the builds, just like all other TEST_TYPE tests. But
+# what makes patchcheck different from the other tests, is if
+# BUILD_NOCLEAN is not set, only the first and last patch run
+# make mrproper. This helps speed up the test.
+#
+# Example:
+# TEST_START
+# TEST_TYPE = patchcheck
+# CHECKOUT = mybranch
+# PATCHCHECK_TYPE = boot
+# PATCHCHECK_START = 747e94ae3d1b4c9bf5380e569f614eb9040b79e7
+# PATCHCHECK_END = HEAD~2
+#
+#
+#
+# For TEST_TYPE = bisect
+#
+# You can specify a git bisect if the BUILD_DIR is a git repository.
+# The MIN_CONFIG will be used for all builds of the bisect. The build type
+# used for bisecting is oldconfig.
+#
+# The option BUILD_TYPE will be ignored.
+#
+# BISECT_TYPE is the type of test to perform:
+# build - bad fails to build
+# boot - bad builds but fails to boot
+# test - bad boots but fails a test
+#
+# BISECT_GOOD is the commit (SHA1) to label as good (accepts all git good commit types)
+# BISECT_BAD is the commit to label as bad (accepts all git bad commit types)
+#
+# The above three options are required for a bisect operation.
+#
+# BISECT_REPLAY = /path/to/replay/file (optional, default undefined)
+#
+# If an operation failed in the bisect that was not expected to
+# fail. Then the test ends. The state of the BUILD_DIR will be
+# left off at where the failure occurred. You can examine the
+# reason for the failure, and perhaps even find a git commit
+# that would work to continue with. You can run:
+#
+# git bisect log > /path/to/replay/file
+#
+# The adding:
+#
+# BISECT_REPLAY= /path/to/replay/file
+#
+# And running the test again. The test will perform the initial
+# git bisect start, git bisect good, and git bisect bad, and
+# then it will run git bisect replay on this file, before
+# continuing with the bisect.
+#
+# BISECT_START = commit (optional, default undefined)
+#
+# As with BISECT_REPLAY, if the test failed on a commit that
+# just happen to have a bad commit in the middle of the bisect,
+# and you need to skip it. If BISECT_START is defined, it
+# will checkout that commit after doing the initial git bisect start,
+# git bisect good, git bisect bad, and running the git bisect replay
+# if the BISECT_REPLAY is set.
+#
+# BISECT_REVERSE = 1 (optional, default 0)
+#
+# In those strange instances where it was broken forever
+# and you are trying to find where it started to work!
+# Set BISECT_GOOD to the commit that was last known to fail
+# Set BISECT_BAD to the commit that is known to start working.
+# With BISECT_REVERSE = 1, The test will consider failures as
+# good, and success as bad.
+#
+# BISECT_CHECK = 1 (optional, default 0)
+#
+# Just to be sure the good is good and bad is bad, setting
+# BISECT_CHECK to 1 will start the bisect by first checking
+# out BISECT_BAD and makes sure it fails, then it will check
+# out BISECT_GOOD and makes sure it succeeds before starting
+# the bisect (it works for BISECT_REVERSE too).
+#
+# You can limit the test to just check BISECT_GOOD or
+# BISECT_BAD with BISECT_CHECK = good or
+# BISECT_CHECK = bad, respectively.
+#
+# Example:
+# TEST_START
+# TEST_TYPE = bisect
+# BISECT_GOOD = v2.6.36
+# BISECT_BAD = b5153163ed580e00c67bdfecb02b2e3843817b3e
+# BISECT_TYPE = build
+# MIN_CONFIG = /home/test/config-bisect
+#
+#
+#
+# For TEST_TYPE = config_bisect
+#
+# In those cases that you have two different configs. One of them
+# work, the other does not, and you do not know what config causes
+# the problem.
+# The TEST_TYPE config_bisect will bisect the bad config looking for
+# what config causes the failure.
+#
+# The way it works is this:
+#
+# First it finds a config to work with. Since a different version, or
+# MIN_CONFIG may cause different dependecies, it must run through this
+# preparation.
+#
+# Overwrites any config set in the bad config with a config set in
+# either the MIN_CONFIG or ADD_CONFIG. Thus, make sure these configs
+# are minimal and do not disable configs you want to test:
+# (ie. # CONFIG_FOO is not set).
+#
+# An oldconfig is run on the bad config and any new config that
+# appears will be added to the configs to test.
+#
+# Finally, it generates a config with the above result and runs it
+# again through make oldconfig to produce a config that should be
+# satisfied by kconfig.
+#
+# Then it starts the bisect.
+#
+# The configs to test are cut in half. If all the configs in this
+# half depend on a config in the other half, then the other half
+# is tested instead. If no configs are enabled by either half, then
+# this means a circular dependency exists and the test fails.
+#
+# A config is created with the test half, and the bisect test is run.
+#
+# If the bisect succeeds, then all configs in the generated config
+# are removed from the configs to test and added to the configs that
+# will be enabled for all builds (they will be enabled, but not be part
+# of the configs to examine).
+#
+# If the bisect fails, then all test configs that were not enabled by
+# the config file are removed from the test. These configs will not
+# be enabled in future tests. Since current config failed, we consider
+# this to be a subset of the config that we started with.
+#
+# When we are down to one config, it is considered the bad config.
+#
+# Note, the config chosen may not be the true bad config. Due to
+# dependencies and selections of the kbuild system, mulitple
+# configs may be needed to cause a failure. If you disable the
+# config that was found and restart the test, if the test fails
+# again, it is recommended to rerun the config_bisect with a new
+# bad config without the found config enabled.
+#
+# The option BUILD_TYPE will be ignored.
+#
+# CONFIG_BISECT_TYPE is the type of test to perform:
+# build - bad fails to build
+# boot - bad builds but fails to boot
+# test - bad boots but fails a test
+#
+# CONFIG_BISECT is the config that failed to boot
+#
+# Example:
+# TEST_START
+# TEST_TYPE = config_bisect
+# CONFIG_BISECT_TYPE = build
+# CONFIG_BISECT = /home/test/¢onfig-bad
+# MIN_CONFIG = /home/test/config-min
+#
