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| author | Yan, Zheng <zheng.z.yan@intel.com> | 2012-06-15 14:31:32 +0800 |
|---|---|---|
| committer | Simon Shields <keepcalm444@gmail.com> | 2016-12-13 00:14:52 +1100 |
| commit | 55306f62c769cba0a97465b04790b8b9fbdce907 (patch) | |
| tree | 8f6aa705ca51731cadae7adda8aad5f926d4d287 /kernel | |
| parent | 174f062a796db86159beed79039c77d46e6a7c8f (diff) | |
| download | kernel_samsung_smdk4412-55306f62c769cba0a97465b04790b8b9fbdce907.zip kernel_samsung_smdk4412-55306f62c769cba0a97465b04790b8b9fbdce907.tar.gz kernel_samsung_smdk4412-55306f62c769cba0a97465b04790b8b9fbdce907.tar.bz2 | |
BACKPORT: perf: Allow the PMU driver to choose the CPU on which to install events
Allow the pmu->event_init callback to change event->cpu, so the PMU driver
can choose the CPU on which to install events.
Change-Id: I0f8b4310d306f4c87bc961f0359c2bdf65c129b6
Signed-off-by: Zheng Yan <zheng.z.yan@intel.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1339741902-8449-4-git-send-email-zheng.z.yan@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/events/core.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index 3c75ec6..b9ed867 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -6571,7 +6571,7 @@ SYSCALL_DEFINE5(perf_event_open, /* * Get the target context (task or percpu): */ - ctx = find_get_context(pmu, task, cpu); + ctx = find_get_context(pmu, task, event->cpu); if (IS_ERR(ctx)) { err = PTR_ERR(ctx); goto err_alloc; @@ -6651,16 +6651,16 @@ SYSCALL_DEFINE5(perf_event_open, mutex_lock(&ctx->mutex); if (move_group) { - perf_install_in_context(ctx, group_leader, cpu); + perf_install_in_context(ctx, group_leader, event->cpu); get_ctx(ctx); list_for_each_entry(sibling, &group_leader->sibling_list, group_entry) { - perf_install_in_context(ctx, sibling, cpu); + perf_install_in_context(ctx, sibling, event->cpu); get_ctx(ctx); } } - perf_install_in_context(ctx, event, cpu); + perf_install_in_context(ctx, event, event->cpu); ++ctx->generation; perf_unpin_context(ctx); mutex_unlock(&ctx->mutex); |