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perf: Optimize perf_output_copy()

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Reduce the clutter in perf_output_copy() by keeping
an interator in perf_output_handle.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <20100521090710.742809176@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra
2010-05-20 16:46:39 +02:00
committed by Ingo Molnar
parent adb8e118f2
commit 5d967a8be6
2 changed files with 29 additions and 28 deletions
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3
include/linux/perf_event.h
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@@ -806,6 +806,9 @@ struct perf_output_handle {
unsigned long head;
unsigned long offset;
unsigned long wakeup;
unsigned long size;
void *addr;
int page;
int nmi;
int sample;
};