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perf: periodic: add cpumask processing

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Cpumask is used to limit the processors being profiled
on a multi-core processor. Cpumask was being set but not
being used. Add support to use cpumask when creating
a counter.

Change-Id: I3a3aab581e9e925507da5d319328ed6a2460328f
Signed-off-by: Neil Leeder <nleeder@codeaurora.org>
(cherry picked from commit fb587021e93b049c9419ea08f50fe431fa505548)
This commit is contained in:
Neil Leeder
2012-02-10 12:50:27 -05:00
committed by Stephen Boyd
parent d1504fec5f
commit b3e662e5d0
1 changed files with 3 additions and 1 deletions
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4
tools/perf/builtin-periodic.c
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@@ -1,5 +1,5 @@
/* /*
* Copyright (c) 2011, Code Aurora Forum. All rights reserved. * Copyright (c) 2011-2012, Code Aurora Forum. All rights reserved.
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and * it under the terms of the GNU General Public License version 2 and
@@ -194,6 +194,8 @@ static int create_perf_counter(struct perf_setup_s *p)
if (p == NULL) if (p == NULL)
return PERF_PERIODIC_ERROR; return PERF_PERIODIC_ERROR;
for (cpu = 0; cpu < cpus->nr; cpu++) { for (cpu = 0; cpu < cpus->nr; cpu++) {
if (((1 << cpu) & cpumask) == 0)
continue;
p->perf_fd[cpu] = sys_perf_event_open(p->attr, target_pid, cpu, p->perf_fd[cpu] = sys_perf_event_open(p->attr, target_pid, cpu,
-1, 0); -1, 0);
if (p->perf_fd[cpu] < 0) if (p->perf_fd[cpu] < 0)