From a52b1752c077cb919b71167c54968a0b91673281 Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Mon, 9 Jul 2007 17:11:49 +0300 Subject: [PATCH] SMP: Allow smp_call_function_single() to current cpu This removes the requirement for callers to get_cpu() to check in simple cases. This patch is for !CONFIG_SMP. Cc: Andi Kleen Signed-off-by: Avi Kivity --- include/linux/smp.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/include/linux/smp.h b/include/linux/smp.h index 96ac21f8dd73..8039daced688 100644 --- a/include/linux/smp.h +++ b/include/linux/smp.h @@ -7,6 +7,7 @@ */ #include +#include extern void cpu_idle(void); @@ -102,7 +103,11 @@ static inline void smp_send_reschedule(int cpu) { } static inline int smp_call_function_single(int cpuid, void (*func) (void *info), void *info, int retry, int wait) { - return -EBUSY; + WARN_ON(cpuid != 0); + local_irq_disable(); + func(info); + local_irq_enable(); + return 0; } #endif /* !SMP */ -- GitLab