Commit 28009ce4 authored Jun 07, 2011 by Richard Kennedy Committed by Ingo Molnar Jul 01, 2011

perf: Remove 64-bit alignment padding from perf_event_context



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>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1307460819.1950.5.camel@castor.rsk


Signed-off-by: Ingo Molnar <mingo@elte.hu>

parent 4ec8363d

include/linux/perf_event.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -894,8 +894,8 @@ 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;
		};

		/*