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perf: Reorder & optimize perf_event_context to remove alignment padding on 64 bit builds

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Remove 8 bytes of alignment padding from perf_event_context on 64 bit
builds which shrinks its size to 192 bytes allowing it to fit into one
fewer cache lines and into a smaller slab.

Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1299512819.2039.5.camel@castor.rsk>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Richard Kennedy 2011-03-07 15:46:59 +00:00 committed by Ingo Molnar
parent a0f7d0f7fc
commit ee643c4179
1 changed files with 1 additions and 1 deletions
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2
include/linux/perf_event.h
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@ -878,8 +878,8 @@ enum perf_event_context_type {
* Used as a container for task events and CPU events as well:
*/
struct perf_event_context {
enum perf_event_context_type type;
struct pmu *pmu;
enum perf_event_context_type type;
/*
* Protect the states of the events in the list,
* nr_active, and the list: