On Sat, 3 Nov 2012, Shan Wei wrote:
> diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
> index 31e4f55..81ae35b 100644
> --- a/kernel/trace/trace.c
> +++ b/kernel/trace/trace.c
> @@ -1513,7 +1513,7 @@ static char *get_trace_buf(void)
> if (!percpu_buffer)
> return NULL;
>
> - buffer = per_cpu_ptr(percpu_buffer, smp_processor_id());
> + buffer = this_cpu_ptr(percpu_buffer);
>
> return buffer->buffer;
return this_cpu_read(percpu_buffer->buffer)
and drop the this_cpu_ptr operation please.
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