microblaze: Add TRACE_IRQFLAGS_SUPPORT
There are just two major changes
Renamed local_irq functions to raw_local_irq in irq.c.
Added TRACE_IRQFLAGS_SUPPORT to Kconfig.debug.
Look at Documentation/irqflags-tracing.txt
Signed-off-by: Michal Simek <monstr@monstr.eu>
diff --git a/arch/microblaze/Kconfig.debug b/arch/microblaze/Kconfig.debug
index 242cd35..9dc708a 100644
--- a/arch/microblaze/Kconfig.debug
+++ b/arch/microblaze/Kconfig.debug
@@ -3,6 +3,9 @@
menu "Kernel hacking"
+config TRACE_IRQFLAGS_SUPPORT
+ def_bool y
+
source "lib/Kconfig.debug"
config EARLY_PRINTK
diff --git a/arch/microblaze/include/asm/irqflags.h b/arch/microblaze/include/asm/irqflags.h
index dea6564..2c38c6d 100644
--- a/arch/microblaze/include/asm/irqflags.h
+++ b/arch/microblaze/include/asm/irqflags.h
@@ -10,78 +10,73 @@
#define _ASM_MICROBLAZE_IRQFLAGS_H
#include <linux/irqflags.h>
+#include <asm/registers.h>
# if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR
-# define local_irq_save(flags) \
+# define raw_local_irq_save(flags) \
do { \
- asm volatile ("# local_irq_save \n\t" \
- "msrclr %0, %1 \n\t" \
- "nop \n\t" \
+ asm volatile (" msrclr %0, %1; \
+ nop;" \
: "=r"(flags) \
: "i"(MSR_IE) \
: "memory"); \
} while (0)
-# define local_irq_disable() \
- do { \
- asm volatile ("# local_irq_disable \n\t" \
- "msrclr r0, %0 \n\t" \
- "nop \n\t" \
- : \
- : "i"(MSR_IE) \
- : "memory"); \
+# define raw_local_irq_disable() \
+ do { \
+ asm volatile (" msrclr r0, %0; \
+ nop;" \
+ : \
+ : "i"(MSR_IE) \
+ : "memory"); \
} while (0)
-# define local_irq_enable() \
- do { \
- asm volatile ("# local_irq_enable \n\t" \
- "msrset r0, %0 \n\t" \
- "nop \n\t" \
- : \
- : "i"(MSR_IE) \
- : "memory"); \
+# define raw_local_irq_enable() \
+ do { \
+ asm volatile (" msrset r0, %0; \
+ nop;" \
+ : \
+ : "i"(MSR_IE) \
+ : "memory"); \
} while (0)
# else /* CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR == 0 */
-# define local_irq_save(flags) \
+# define raw_local_irq_save(flags) \
do { \
register unsigned tmp; \
- asm volatile ("# local_irq_save \n\t" \
- "mfs %0, rmsr \n\t" \
- "nop \n\t" \
- "andi %1, %0, %2 \n\t" \
- "mts rmsr, %1 \n\t" \
- "nop \n\t" \
+ asm volatile (" mfs %0, rmsr; \
+ nop; \
+ andi %1, %0, %2; \
+ mts rmsr, %1; \
+ nop;" \
: "=r"(flags), "=r" (tmp) \
: "i"(~MSR_IE) \
: "memory"); \
} while (0)
-# define local_irq_disable() \
+# define raw_local_irq_disable() \
do { \
register unsigned tmp; \
- asm volatile ("# local_irq_disable \n\t" \
- "mfs %0, rmsr \n\t" \
- "nop \n\t" \
- "andi %0, %0, %1 \n\t" \
- "mts rmsr, %0 \n\t" \
- "nop \n\t" \
+ asm volatile (" mfs %0, rmsr; \
+ nop; \
+ andi %0, %0, %1; \
+ mts rmsr, %0; \
+ nop;" \
: "=r"(tmp) \
: "i"(~MSR_IE) \
: "memory"); \
} while (0)
-# define local_irq_enable() \
+# define raw_local_irq_enable() \
do { \
register unsigned tmp; \
- asm volatile ("# local_irq_enable \n\t" \
- "mfs %0, rmsr \n\t" \
- "nop \n\t" \
- "ori %0, %0, %1 \n\t" \
- "mts rmsr, %0 \n\t" \
- "nop \n\t" \
+ asm volatile (" mfs %0, rmsr; \
+ nop; \
+ ori %0, %0, %1; \
+ mts rmsr, %0; \
+ nop;" \
: "=r"(tmp) \
: "i"(MSR_IE) \
: "memory"); \
@@ -89,35 +84,28 @@
# endif /* CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR */
-#define local_save_flags(flags) \
+#define raw_local_irq_restore(flags) \
do { \
- asm volatile ("# local_save_flags \n\t" \
- "mfs %0, rmsr \n\t" \
- "nop \n\t" \
- : "=r"(flags) \
+ asm volatile (" mts rmsr, %0; \
+ nop;" \
: \
+ : "r"(flags) \
: "memory"); \
} while (0)
-#define local_irq_restore(flags) \
- do { \
- asm volatile ("# local_irq_restore \n\t"\
- "mts rmsr, %0 \n\t" \
- "nop \n\t" \
- : \
- : "r"(flags) \
- : "memory"); \
- } while (0)
-
-static inline int irqs_disabled(void)
+static inline unsigned long get_msr(void)
{
unsigned long flags;
-
- local_save_flags(flags);
- return ((flags & MSR_IE) == 0);
+ asm volatile (" mfs %0, rmsr; \
+ nop;" \
+ : "=r"(flags) \
+ : \
+ : "memory"); \
+ return flags;
}
-#define raw_irqs_disabled irqs_disabled
-#define raw_irqs_disabled_flags(flags) ((flags) == 0)
+#define raw_local_save_flags(flags) ((flags) = get_msr())
+#define raw_irqs_disabled() ((get_msr() & MSR_IE) == 0)
+#define raw_irqs_disabled_flags(flags) ((flags & MSR_IE) == 0)
#endif /* _ASM_MICROBLAZE_IRQFLAGS_H */
diff --git a/arch/microblaze/kernel/cpu/pvr.c b/arch/microblaze/kernel/cpu/pvr.c
index c9a4340..9bee938 100644
--- a/arch/microblaze/kernel/cpu/pvr.c
+++ b/arch/microblaze/kernel/cpu/pvr.c
@@ -45,7 +45,7 @@
int cpu_has_pvr(void)
{
- unsigned flags;
+ unsigned long flags;
unsigned pvr0;
local_save_flags(flags);
