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SMP: Allow smp_call_function_single() to current cpu

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This removes the requirement for callers to get_cpu() to check in simple
cases.  This patch is for !CONFIG_SMP.

Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Avi Kivity <avi@qumranet.com>
This commit is contained in:
Avi Kivity
2007-07-09 17:11:49 +03:00
parent de48935391
commit a52b1752c0
1 changed files with 6 additions and 1 deletions
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7
include/linux/smp.h
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@@ -7,6 +7,7 @@
*/ */
#include <linux/errno.h> #include <linux/errno.h>
#include <asm/system.h>
extern void cpu_idle(void); 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), static inline int smp_call_function_single(int cpuid, void (*func) (void *info),
void *info, int retry, int wait) void *info, int retry, int wait)
{ {
return -EBUSY; WARN_ON(cpuid != 0);
local_irq_disable();
func(info);
local_irq_enable();
return 0;
} }
#endif /* !SMP */ #endif /* !SMP */