From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnaldo Carvalho de Melo Subject: [PATCH 04/27] perf cs-etm: Bail out immediately for instruction sample failure Date: Wed, 25 Jul 2018 14:59:38 -0300 Message-ID: <20180725180001.15108-5-acme@kernel.org> References: <20180725180001.15108-1-acme@kernel.org> Return-path: In-Reply-To: <20180725180001.15108-1-acme@kernel.org> Sender: linux-kernel-owner@vger.kernel.org To: Ingo Molnar Cc: Clark Williams , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Leo Yan , Alexander Shishkin , Jiri Olsa , Kim Phillips , Mike Leach , Namhyung Kim , Peter Zijlstra , Robert Walker , linux-arm-kernel@lists.infradead.org, Arnaldo Carvalho de Melo List-Id: linux-perf-users.vger.kernel.org From: Leo Yan If the instruction sample failure has happened, it isn't necessary to execute to the end of the function cs_etm__flush(). This commit is to bail out immediately and return the error code. Signed-off-by: Leo Yan Reviewed-by: Mathieu Poirier Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Kim Phillips Cc: Mike Leach Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Robert Walker Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1529298599-3876-3-git-send-email-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/cs-etm.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c index 822ba915d144..8b2c099e750a 100644 --- a/tools/perf/util/cs-etm.c +++ b/tools/perf/util/cs-etm.c @@ -939,6 +939,9 @@ static int cs_etm__flush(struct cs_etm_queue *etmq) err = cs_etm__synth_instruction_sample( etmq, addr, etmq->period_instructions); + if (err) + return err; + etmq->period_instructions = 0; /* -- 2.14.4