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microblaze/irqs: Do not trace arch_local_{*,irq_*} functions

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Do not trace arch_local_save_flags(), arch_local_irq_*() and friends.
Although they are marked inline, gcc may still make a function out of
them and add it to the pool of functions that are traced by the function
tracer. This can cause undesirable results (kernel panic, triple faults,
etc).

Add the notrace notation to prevent them from ever being traced.

Cc: Michal Simek <monstr@monstr.eu>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt 2011-07-01 23:04:40 -04:00 committed by Michal Simek
parent 02f8c6aee8
commit a2f526994e
1 changed files with 10 additions and 10 deletions
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20
arch/microblaze/include/asm/irqflags.h
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@ -14,7 +14,7 @@
#if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR
static inline unsigned long arch_local_irq_save(void)
static inline notrace unsigned long arch_local_irq_save(void)
{
unsigned long flags;
asm volatile(" msrclr %0, %1 \n"
@ -25,7 +25,7 @@ static inline unsigned long arch_local_irq_save(void)
return flags;
}
static inline void arch_local_irq_disable(void)
static inline notrace void arch_local_irq_disable(void)
{
/* this uses r0 without declaring it - is that correct? */
asm volatile(" msrclr r0, %0 \n"
@ -35,7 +35,7 @@ static inline void arch_local_irq_disable(void)
: "memory");
}
static inline void arch_local_irq_enable(void)
static inline notrace void arch_local_irq_enable(void)
{
/* this uses r0 without declaring it - is that correct? */
asm volatile(" msrset r0, %0 \n"
@ -47,7 +47,7 @@ static inline void arch_local_irq_enable(void)
#else /* !CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR */
static inline unsigned long arch_local_irq_save(void)
static inline notrace unsigned long arch_local_irq_save(void)
{
unsigned long flags, tmp;
asm volatile (" mfs %0, rmsr \n"
@ -61,7 +61,7 @@ static inline unsigned long arch_local_irq_save(void)
return flags;
}
static inline void arch_local_irq_disable(void)
static inline notrace void arch_local_irq_disable(void)
{
unsigned long tmp;
asm volatile(" mfs %0, rmsr \n"
@ -74,7 +74,7 @@ static inline void arch_local_irq_disable(void)
: "memory");
}
static inline void arch_local_irq_enable(void)
static inline notrace void arch_local_irq_enable(void)
{
unsigned long tmp;
asm volatile(" mfs %0, rmsr \n"
@ -89,7 +89,7 @@ static inline void arch_local_irq_enable(void)
#endif /* CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR */
static inline unsigned long arch_local_save_flags(void)
static inline notrace unsigned long arch_local_save_flags(void)
{
unsigned long flags;
asm volatile(" mfs %0, rmsr \n"
@ -100,7 +100,7 @@ static inline unsigned long arch_local_save_flags(void)
return flags;
}
static inline void arch_local_irq_restore(unsigned long flags)
static inline notrace void arch_local_irq_restore(unsigned long flags)
{
asm volatile(" mts rmsr, %0 \n"
" nop \n"
@ -109,12 +109,12 @@ static inline void arch_local_irq_restore(unsigned long flags)
: "memory");
}
static inline bool arch_irqs_disabled_flags(unsigned long flags)
static inline notrace bool arch_irqs_disabled_flags(unsigned long flags)
{
return (flags & MSR_IE) == 0;
}
static inline bool arch_irqs_disabled(void)
static inline notrace bool arch_irqs_disabled(void)
{
return arch_irqs_disabled_flags(arch_local_save_flags());
}