Messages in this thread Patch in this message | | | Subject | [PATCH] perf events: remove 64bit alignment padding from perf_event_context | From | Richard Kennedy <> | Date | Tue, 07 Jun 2011 16:33:38 +0100 |
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Reorder perf_event_context to remove 8 bytes of 64 bit alignment padding shrinking its size to 192 bytes, allowing it to fit into a smaller slab and use one fewer cache lines.
Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk>
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patch against v3.0-rc2 compiled & tested on x86_64
regards Richard
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 3412684..9d5b3d5 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -919,8 +919,8 @@ struct perf_event_context { u64 parent_gen; u64 generation; int pin_count; - struct rcu_head rcu_head; int nr_cgroups; /* cgroup events present */ + struct rcu_head rcu_head; }; /*
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