Commit-ID: 4a2345937c17722bd2979f662ae909846b4a052a Gitweb: http://git.kernel.org/tip/4a2345937c17722bd2979f662ae909846b4a052a Author: Peter Zijlstra <pet...@infradead.org> AuthorDate: Mon, 24 Feb 2014 12:43:31 +0100 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Thu, 27 Feb 2014 12:43:26 +0100
perf: Optimize group_sched_in() Use the ctx pmu instead of the event pmu. When a group leader is a software event but the group contains hardware events, the entire group is on the hardware PMU. Using the hardware PMU for the transaction makes most sense since that's the most expensive one to programm (and software PMUs generally don't have TXN support anyway). Signed-off-by: Peter Zijlstra <pet...@infradead.org> Cc: Stephane Eranian <eran...@google.com> Link: http://lkml.kernel.org/n/tip-sctoo9t2f3nn2c9g56892...@git.kernel.org Signed-off-by: Ingo Molnar <mi...@kernel.org> --- kernel/events/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/events/core.c b/kernel/events/core.c index 823a53d..661951a 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -1733,7 +1733,7 @@ group_sched_in(struct perf_event *group_event, struct perf_event_context *ctx) { struct perf_event *event, *partial_group = NULL; - struct pmu *pmu = group_event->pmu; + struct pmu *pmu = ctx->pmu; u64 now = ctx->time; bool simulate = false; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
