Commit-ID: 59d069eb5ae9b033ed1c124c92e1532c4a958991 Gitweb: http://git.kernel.org/tip/59d069eb5ae9b033ed1c124c92e1532c4a958991 Author: Xiao Guangrong <xiaoguangrong@xxxxxxxxxxxxxx> AuthorDate: Tue, 1 Dec 2009 17:30:08 +0800 Committer: Ingo Molnar <mingo@xxxxxxx> CommitDate: Tue, 1 Dec 2009 11:19:07 +0100 perf_event: Initialize data.period in perf_swevent_hrtimer() In current code in perf_swevent_hrtimer(), data.period is not initialized, The result is obvious wrong: # ./perf record -f -e cpu-clock make # ./perf report # Samples: 1740 # # Overhead Command ...... # ........ ........ .......................................... # 1025422183050275328.00% sh libc-2.9.90.so ... 1025422183050275328.00% perl libperl.so ... 1025422168240043264.00% perl [kernel] ... 1025422030011210752.00% perl [kernel] ... Signed-off-by: Xiao Guangrong <xiaoguangrong@xxxxxxxxxxxxxx> Acked-by: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx> Cc: <stable@xxxxxxxxxx> LKML-Reference: <4B14E220.2050107@xxxxxxxxxxxxxx> Signed-off-by: Ingo Molnar <mingo@xxxxxxx> --- kernel/perf_event.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/kernel/perf_event.c b/kernel/perf_event.c index 0b9ca2d..040ee51 100644 --- a/kernel/perf_event.c +++ b/kernel/perf_event.c @@ -4010,6 +4010,7 @@ static enum hrtimer_restart perf_swevent_hrtimer(struct hrtimer *hrtimer) event->pmu->read(event); data.addr = 0; + data.period = event->hw.last_period; regs = get_irq_regs(); /* * In case we exclude kernel IPs or are somehow not in interrupt -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html