Messages in this thread Patch in this message | | | From | Jeff Ohlstein <> | Subject | [PATCH 3/3] arm: macros for wfe, sev instructions | Date | Fri, 23 Jul 2010 11:58:03 -0700 |
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From: Steve Muckle <smuckle@codeaurora.org>
The wait for event and send event instructions may be called from C code such as boot or power management routines.
Signed-off-by: Steve Muckle <smuckle@codeaurora.org> Signed-off-by: Jeff Ohlstein <johlstei@codeaurora.org> --- arch/arm/include/asm/processor.h | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/arch/arm/include/asm/processor.h b/arch/arm/include/asm/processor.h index 7bed3da..4262664 100644 --- a/arch/arm/include/asm/processor.h +++ b/arch/arm/include/asm/processor.h @@ -97,6 +97,11 @@ unsigned long get_wchan(struct task_struct *p); #define cpu_relax() barrier() #endif +#if defined(CONFIG_CPU_32v6K) || __LINUX_ARM_ARCH__ >= 7 +#define sev() __asm__("sev") +#define wfe() __asm__("wfe") +#endif + /* * Create a new kernel thread */ -- 1.7.1.1
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