Re: [PATCH v2 7/9] trace: use this_cpu_ptr per-cpu helper

[Christoph Lameter]

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.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/