Re: [PATCH 3/4] tracing, page-allocator: Add trace event for pagetraffic related to the buddy lists

From: Rik van Riel
Date: Thu Jul 30 2009 - 09:44:18 EST


Mel Gorman wrote:
The page allocation trace event reports that a page was successfully allocated
but it does not specify where it came from. When analysing performance,
it can be important to distinguish between pages coming from the per-cpu
allocator and pages coming from the buddy lists as the latter requires the
zone lock to the taken and more data structures to be examined.

Acked-by: Rik van Riel <riel@xxxxxxxxxx>

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