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| author | Yan, Zheng <zheng.z.yan@intel.com> | 2012-06-15 08:31:32 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2012-06-18 12:13:21 +0200 |
| commit | e2d37cd213dcc0aeb3db4b37b9bd1710fe36fbf7 (patch) | |
| tree | 90e769d4c07a5f7f895a4c7459d72caf5aec75b2 /kernel/events | |
| parent | perf: Avoid race between cpu hotplug and installing event (diff) | |
| download | linux-e2d37cd213dcc0aeb3db4b37b9bd1710fe36fbf7.tar.xz linux-e2d37cd213dcc0aeb3db4b37b9bd1710fe36fbf7.zip | |
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.
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/events')
| -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 31d182e01549..fa36a39e8bb7 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -6306,7 +6306,7 @@ 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; @@ -6379,16 +6379,16 @@ 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); |