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generic-ipi: cleanup for generic_smp_call_function_interrupt()

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Use smp_processor_id() instead of get_cpu() and put_cpu() in
generic_smp_call_function_interrupt(), It's no need to disable preempt,
because we must call generic_smp_call_function_interrupt() with interrupts
disabled.

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Xiao Guangrong 2009-12-14 18:00:16 -08:00 committed by Linus Torvalds
parent 4eb174bee6
commit c0f68c2fab
1 changed files with 1 additions and 2 deletions
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3
kernel/smp.c
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@ -171,7 +171,7 @@ void generic_exec_single(int cpu, struct call_single_data *data, int wait)
void generic_smp_call_function_interrupt(void)
{
struct call_function_data *data;
int cpu = get_cpu();
int cpu = smp_processor_id();
/*
* Shouldn't receive this interrupt on a cpu that is not yet online.
@ -212,7 +212,6 @@ void generic_smp_call_function_interrupt(void)
csd_unlock(&data->csd);
}
put_cpu();
}
/*