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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>
This commit is contained in:
Michal Simek 2009-10-30 12:26:53 +01:00
parent fb5a32dc1a
commit a3cd613b2e
3 changed files with 54 additions and 63 deletions
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3
arch/microblaze/Kconfig.debug
View File

@ -3,6 +3,9 @@
menu "Kernel hacking"
config TRACE_IRQFLAGS_SUPPORT
def_bool y
source "lib/Kconfig.debug"
config EARLY_PRINTK

94
arch/microblaze/include/asm/irqflags.h
View File

@ -10,34 +10,32 @@
#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() \
# define raw_local_irq_disable() \
do { \
asm volatile ("# local_irq_disable \n\t" \
"msrclr r0, %0 \n\t" \
"nop \n\t" \
asm volatile (" msrclr r0, %0; \
nop;" \
: \
: "i"(MSR_IE) \
: "memory"); \
} while (0)
# define local_irq_enable() \
# define raw_local_irq_enable() \
do { \
asm volatile ("# local_irq_enable \n\t" \
"msrset r0, %0 \n\t" \
"nop \n\t" \
asm volatile (" msrset r0, %0; \
nop;" \
: \
: "i"(MSR_IE) \
: "memory"); \
@ -45,43 +43,40 @@
# 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) \
: \
: "memory"); \
} while (0)
#define local_irq_restore(flags) \
do { \
asm volatile ("# local_irq_restore \n\t"\
"mts rmsr, %0 \n\t" \
"nop \n\t" \
asm volatile (" mts rmsr, %0; \
nop;" \
: \
: "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 */

2
arch/microblaze/kernel/cpu/pvr.c
View File

@ -45,7 +45,7 @@
int cpu_has_pvr(void)
{
unsigned flags;
unsigned long flags;
unsigned pvr0;
local_save_flags(flags);