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| author | Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> | 2009-12-14 18:00:16 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-15 08:53:25 -0800 |
| commit | c0f68c2fab4898bcc4671a8fb941f428856b4ad5 (patch) | |
| tree | 87cc5addf461b699b3b9c9d1931f77acf947051d /kernel/smp.c | |
| parent | 4eb174bee6f8623fed1af0072f1bebfc3b513a52 (diff) | |
| download | lwn-c0f68c2fab4898bcc4671a8fb941f428856b4ad5.tar.gz lwn-c0f68c2fab4898bcc4671a8fb941f428856b4ad5.zip | |
generic-ipi: cleanup for generic_smp_call_function_interrupt()
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>
Diffstat (limited to 'kernel/smp.c')
| -rw-r--r-- | kernel/smp.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/kernel/smp.c b/kernel/smp.c index a8c76069cf50..00a1d0ede532 100644 --- a/kernel/smp.c +++ b/kernel/smp.c @@ -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(); } /* |