sh: stacktrace/lockdep/irqflags tracing support.
Wire up all of the essentials for lockdep..
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/include/asm-sh/irqflags.h b/include/asm-sh/irqflags.h
new file mode 100644
index 0000000..9dedc1b
--- /dev/null
+++ b/include/asm-sh/irqflags.h
@@ -0,0 +1,123 @@
+#ifndef __ASM_SH_IRQFLAGS_H
+#define __ASM_SH_IRQFLAGS_H
+
+static inline void raw_local_irq_enable(void)
+{
+ unsigned long __dummy0, __dummy1;
+
+ __asm__ __volatile__ (
+ "stc sr, %0\n\t"
+ "and %1, %0\n\t"
+#ifdef CONFIG_CPU_HAS_SR_RB
+ "stc r6_bank, %1\n\t"
+ "or %1, %0\n\t"
+#endif
+ "ldc %0, sr\n\t"
+ : "=&r" (__dummy0), "=r" (__dummy1)
+ : "1" (~0x000000f0)
+ : "memory"
+ );
+}
+
+static inline void raw_local_irq_disable(void)
+{
+ unsigned long flags;
+
+ __asm__ __volatile__ (
+ "stc sr, %0\n\t"
+ "or #0xf0, %0\n\t"
+ "ldc %0, sr\n\t"
+ : "=&z" (flags)
+ : /* no inputs */
+ : "memory"
+ );
+}
+
+static inline void set_bl_bit(void)
+{
+ unsigned long __dummy0, __dummy1;
+
+ __asm__ __volatile__ (
+ "stc sr, %0\n\t"
+ "or %2, %0\n\t"
+ "and %3, %0\n\t"
+ "ldc %0, sr\n\t"
+ : "=&r" (__dummy0), "=r" (__dummy1)
+ : "r" (0x10000000), "r" (0xffffff0f)
+ : "memory"
+ );
+}
+
+static inline void clear_bl_bit(void)
+{
+ unsigned long __dummy0, __dummy1;
+
+ __asm__ __volatile__ (
+ "stc sr, %0\n\t"
+ "and %2, %0\n\t"
+ "ldc %0, sr\n\t"
+ : "=&r" (__dummy0), "=r" (__dummy1)
+ : "1" (~0x10000000)
+ : "memory"
+ );
+}
+
+static inline unsigned long __raw_local_save_flags(void)
+{
+ unsigned long flags;
+
+ __asm__ __volatile__ (
+ "stc sr, %0\n\t"
+ "and #0xf0, %0\n\t"
+ : "=&z" (flags)
+ : /* no inputs */
+ : "memory"
+ );
+
+ return flags;
+}
+
+#define raw_local_save_flags(flags) \
+ do { (flags) = __raw_local_save_flags(); } while (0)
+
+static inline int raw_irqs_disabled_flags(unsigned long flags)
+{
+ return (flags != 0);
+}
+
+static inline int raw_irqs_disabled(void)
+{
+ unsigned long flags = __raw_local_save_flags();
+
+ return raw_irqs_disabled_flags(flags);
+}
+
+static inline unsigned long __raw_local_irq_save(void)
+{
+ unsigned long flags, __dummy;
+
+ __asm__ __volatile__ (
+ "stc sr, %1\n\t"
+ "mov %1, %0\n\t"
+ "or #0xf0, %0\n\t"
+ "ldc %0, sr\n\t"
+ "mov %1, %0\n\t"
+ "and #0xf0, %0\n\t"
+ : "=&z" (flags), "=&r" (__dummy)
+ : /* no inputs */
+ : "memory"
+ );
+
+ return flags;
+}
+
+#define raw_local_irq_save(flags) \
+ do { (flags) = __raw_local_irq_save(); } while (0)
+
+static inline void raw_local_irq_restore(unsigned long flags)
+{
+ if ((flags & 0xf0) != 0xf0)
+ raw_local_irq_enable();
+}
+
+#endif /* __ASM_SH_IRQFLAGS_H */
diff --git a/include/asm-sh/rwsem.h b/include/asm-sh/rwsem.h
index 9d2aea5..4931ba8 100644
--- a/include/asm-sh/rwsem.h
+++ b/include/asm-sh/rwsem.h
@@ -25,11 +25,21 @@
#define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS)
spinlock_t wait_lock;
struct list_head wait_list;
+#ifdef CONFIG_DEBUG_LOCK_ALLOC
+ struct lockdep_map dep_map;
+#endif
};
+#ifdef CONFIG_DEBUG_LOCK_ALLOC
+# define __RWSEM_DEP_MAP_INIT(lockname) , .dep_map = { .name = #lockname }
+#else
+# define __RWSEM_DEP_MAP_INIT(lockname)
+#endif
+
#define __RWSEM_INITIALIZER(name) \
{ RWSEM_UNLOCKED_VALUE, SPIN_LOCK_UNLOCKED, \
- LIST_HEAD_INIT((name).wait_list) }
+ LIST_HEAD_INIT((name).wait_list) \
+ __RWSEM_DEP_MAP_INIT(name) }
#define DECLARE_RWSEM(name) \
struct rw_semaphore name = __RWSEM_INITIALIZER(name)
@@ -39,6 +49,16 @@
extern struct rw_semaphore *rwsem_wake(struct rw_semaphore *sem);
extern struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem);
+extern void __init_rwsem(struct rw_semaphore *sem, const char *name,
+ struct lock_class_key *key);
+
+#define init_rwsem(sem) \
+do { \
+ static struct lock_class_key __key; \
+ \
+ __init_rwsem((sem), #sem, &__key); \
+} while (0)
+
static inline void init_rwsem(struct rw_semaphore *sem)
{
sem->count = RWSEM_UNLOCKED_VALUE;
@@ -141,6 +161,11 @@
rwsem_downgrade_wake(sem);
}
+static inline void __down_write_nested(struct rw_semaphore *sem, int subclass)
+{
+ __down_write(sem);
+}
+
/*
* implement exchange and add functionality
*/
diff --git a/include/asm-sh/system.h b/include/asm-sh/system.h
index 3340126..b1e42e7 100644
--- a/include/asm-sh/system.h
+++ b/include/asm-sh/system.h
@@ -6,6 +6,7 @@
* Copyright (C) 2002 Paul Mundt
*/
+#include <linux/irqflags.h>
#include <asm/types.h>
/*
@@ -131,103 +132,6 @@
#define set_mb(var, value) do { xchg(&var, value); } while (0)
-/* Interrupt Control */
-#ifdef CONFIG_CPU_HAS_SR_RB
-static inline void local_irq_enable(void)
-{
- unsigned long __dummy0, __dummy1;
-
- __asm__ __volatile__("stc sr, %0\n\t"
- "and %1, %0\n\t"
- "stc r6_bank, %1\n\t"
- "or %1, %0\n\t"
- "ldc %0, sr"
- : "=&r" (__dummy0), "=r" (__dummy1)
- : "1" (~0x000000f0)
- : "memory");
-}
-#else
-static inline void local_irq_enable(void)
-{
- unsigned long __dummy0, __dummy1;
-
- __asm__ __volatile__ (
- "stc sr, %0\n\t"
- "and %1, %0\n\t"
- "ldc %0, sr\n\t"
- : "=&r" (__dummy0), "=r" (__dummy1)
- : "1" (~0x000000f0)
- : "memory");
-}
-#endif
-
-static inline void local_irq_disable(void)
-{
- unsigned long __dummy;
- __asm__ __volatile__("stc sr, %0\n\t"
- "or #0xf0, %0\n\t"
- "ldc %0, sr"
- : "=&z" (__dummy)
- : /* no inputs */
- : "memory");
-}
-
-static inline void set_bl_bit(void)
-{
- unsigned long __dummy0, __dummy1;
-
- __asm__ __volatile__ ("stc sr, %0\n\t"
- "or %2, %0\n\t"
- "and %3, %0\n\t"
- "ldc %0, sr"
- : "=&r" (__dummy0), "=r" (__dummy1)
- : "r" (0x10000000), "r" (0xffffff0f)
- : "memory");
-}
-
-static inline void clear_bl_bit(void)
-{
- unsigned long __dummy0, __dummy1;
-
- __asm__ __volatile__ ("stc sr, %0\n\t"
- "and %2, %0\n\t"
- "ldc %0, sr"
- : "=&r" (__dummy0), "=r" (__dummy1)
- : "1" (~0x10000000)
- : "memory");
-}
-
-#define local_save_flags(x) \
- __asm__("stc sr, %0; and #0xf0, %0" : "=&z" (x) :/**/: "memory" )
-
-#define irqs_disabled() \
-({ \
- unsigned long flags; \
- local_save_flags(flags); \
- (flags != 0); \
-})
-
-static inline unsigned long local_irq_save(void)
-{
- unsigned long flags, __dummy;
-
- __asm__ __volatile__("stc sr, %1\n\t"
- "mov %1, %0\n\t"
- "or #0xf0, %0\n\t"
- "ldc %0, sr\n\t"
- "mov %1, %0\n\t"
- "and #0xf0, %0"
- : "=&z" (flags), "=&r" (__dummy)
- :/**/
- : "memory" );
- return flags;
-}
-
-#define local_irq_restore(x) do { \
- if ((x & 0x000000f0) != 0x000000f0) \
- local_irq_enable(); \
-} while (0)
-
/*
* Jump to P2 area.
* When handling TLB or caches, we need to do it from P2 area.
@@ -264,9 +168,6 @@
: "=&r" (__dummy)); \
} while (0)
-/* For spinlocks etc */
-#define local_irq_save(x) x = local_irq_save()
-
static inline unsigned long xchg_u32(volatile u32 *m, unsigned long val)
{
unsigned long flags, retval;
