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SubjectRe: [PATCH] mm: get rid of unnecessary overhead of trace_mm_page_alloc_extfrag()
On Fri, Oct 25, 2013 at 12:42:47PM -0400, kosaki.motohiro@gmail.com wrote:
> From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
>
> In general, every tracepoint should be zero overhead if it is disabled.
> However, trace_mm_page_alloc_extfrag() is one of exception. It evaluate
> "new_type == start_migratetype" even if tracepoint is disabled.
>
> However, the code can be moved into tracepoint's TP_fast_assign() and
> TP_fast_assign exist exactly such purpose. This patch does it.
>
> Cc: Mel Gorman <mgorman@suse.de>
> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>

Acked-by: Mel Gorman <mgorman@suse.de>

--
Mel Gorman
SUSE Labs


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