Commit-ID: 06db0b21712f878b808480ef31097637013bbf0f Gitweb: http://git.kernel.org/tip/06db0b21712f878b808480ef31097637013bbf0f Author: Peter Zijlstra <[email protected]> AuthorDate: Fri, 13 Sep 2013 13:14:47 +0200 Committer: Ingo Molnar <[email protected]> CommitDate: Tue, 19 Nov 2013 16:57:42 +0100
perf: Remove fragile swevent hlist optimization Currently we only allocate a single cpu hashtable for per-cpu swevents; do away with this optimization for it is fragile in the face of things like perf_pmu_migrate_context(). The easiest thing is to make sure all CPUs are consistent wrt state. Signed-off-by: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Ingo Molnar <[email protected]> --- kernel/events/core.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/kernel/events/core.c b/kernel/events/core.c index d724e77..72348dc 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -5680,11 +5680,6 @@ static void swevent_hlist_put(struct perf_event *event) { int cpu; - if (event->cpu != -1) { - swevent_hlist_put_cpu(event, event->cpu); - return; - } - for_each_possible_cpu(cpu) swevent_hlist_put_cpu(event, cpu); } @@ -5718,9 +5713,6 @@ static int swevent_hlist_get(struct perf_event *event) int err; int cpu, failed_cpu; - if (event->cpu != -1) - return swevent_hlist_get_cpu(event, event->cpu); - get_online_cpus(); for_each_possible_cpu(cpu) { err = swevent_hlist_get_cpu(event, cpu); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
