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ARM: place C irq handlers in IRQ_ENTRY for ftrace

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When FUNCTION_GRAPH_TRACER is enabled, place do_IRQ() and friends in the
IRQ_ENTRY section so that the irq-related features of the function graph
tracer work.

Signed-off-by: Rabin Vincent <rabin@rab.in>
This commit is contained in:
Rabin Vincent
2010-10-07 20:51:58 +05:30
parent ec763f0de8
commit 61b5cb1c3b
5 changed files with 33 additions and 5 deletions
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23
arch/arm/include/asm/traps.h
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@@ -15,13 +15,32 @@ struct undef_hook {
void register_undef_hook(struct undef_hook *hook);
void unregister_undef_hook(struct undef_hook *hook);
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
static inline int __in_irqentry_text(unsigned long ptr)
{
extern char __irqentry_text_start[];
extern char __irqentry_text_end[];
return ptr >= (unsigned long)&__irqentry_text_start &&
ptr < (unsigned long)&__irqentry_text_end;
}
#else
static inline int __in_irqentry_text(unsigned long ptr)
{
return 0;
}
#endif
static inline int in_exception_text(unsigned long ptr)
{
extern char __exception_text_start[];
extern char __exception_text_end[];
int in;
return ptr >= (unsigned long)&__exception_text_start &&
ptr < (unsigned long)&__exception_text_end;
in = ptr >= (unsigned long)&__exception_text_start &&
ptr < (unsigned long)&__exception_text_end;
return in ? : __in_irqentry_text(ptr);
}
extern void __init early_trap_init(void);