From 940c5b2971de443df22eed0441bc74fb0116e9f5 Mon Sep 17 00:00:00 2001 From: Lin Ming Date: Sun, 27 Feb 2011 21:13:31 +0800 Subject: [PATCH] perf: Fix the missing event initialization when pmu is found in idr Currently, the event is not initialized if pmu is found in idr. This never causes bug just because now no pmu is associated with the idr id. Signed-off-by: Lin Ming Signed-off-by: Peter Zijlstra LKML-Reference: <1298812411.2699.9.camel@localhost> Signed-off-by: Ingo Molnar --- kernel/perf_event.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/kernel/perf_event.c b/kernel/perf_event.c index 64a018e..821ce82 100644 --- a/kernel/perf_event.c +++ b/kernel/perf_event.c @@ -6098,17 +6098,22 @@ struct pmu *perf_init_event(struct perf_event *event) { struct pmu *pmu = NULL; int idx; + int ret; idx = srcu_read_lock(&pmus_srcu); rcu_read_lock(); pmu = idr_find(&pmu_idr, event->attr.type); rcu_read_unlock(); - if (pmu) + if (pmu) { + ret = pmu->event_init(event); + if (ret) + pmu = ERR_PTR(ret); goto unlock; + } list_for_each_entry_rcu(pmu, &pmus, entry) { - int ret = pmu->event_init(event); + ret = pmu->event_init(event); if (!ret) goto unlock; -- 2.7.4