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Date: Wed, 13 May 2009 11:00:13 +0200 From: Uwe Kleine-König <u.kleine-koenig@...gutronix.de> To: linux-kernel@...r.kernel.org Cc: linux-rt-users@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de> Subject: [PATCH] ARM: __builtin_return_address works with argument 0 This saves the function overhead for CALLER_ADDRESS0. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de> Cc: Thomas Gleixner <tglx@...utronix.de> --- Hi Thomas, this applies to .29.3-rt12. Feel free to squash this into arm-tracing-updates.patch. Best regards Uwe arch/arm/include/asm/ftrace.h | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/arm/include/asm/ftrace.h b/arch/arm/include/asm/ftrace.h index 900fc19..f7e8bac 100644 --- a/arch/arm/include/asm/ftrace.h +++ b/arch/arm/include/asm/ftrace.h @@ -15,7 +15,7 @@ extern void mcount(void); void *return_address(unsigned int); #define HAVE_ARCH_CALLER_ADDR -#define CALLER_ADDR0 ((unsigned long)return_address(0)) +#define CALLER_ADDR0 ((unsigned long)__builtin_return_address(0)) #define CALLER_ADDR1 ((unsigned long)return_address(1)) #define CALLER_ADDR2 ((unsigned long)return_address(2)) #define CALLER_ADDR3 ((unsigned long)return_address(3)) -- 1.6.2.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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