From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932509AbeCETNh (ORCPT ); Mon, 5 Mar 2018 14:13:37 -0500 Received: from mga17.intel.com ([192.55.52.151]:47640 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753054AbeCETMa (ORCPT ); Mon, 5 Mar 2018 14:12:30 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.47,428,1515484800"; d="scan'208";a="23109080" From: kan.liang@linux.intel.com To: acme@kernel.org, mingo@redhat.com, linux-kernel@vger.kernel.org Cc: jolsa@redhat.com, namhyung@kernel.org, wangnan0@huawei.com, ak@linux.intel.com, Kan Liang Subject: [PATCH 3/7] perf mmap: Using the stored data in perf_mmap__read_event Date: Mon, 5 Mar 2018 14:10:55 -0500 Message-Id: <1520277059-32749-3-git-send-email-kan.liang@linux.intel.com> X-Mailer: git-send-email 2.4.11 In-Reply-To: <1520277059-32749-1-git-send-email-kan.liang@linux.intel.com> References: <1520277059-32749-1-git-send-email-kan.liang@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Kan Liang Using the 'start', 'end' and 'overwrite' which are stored in struct perf_mmap to replace the parameters of perf_mmap__read_event(). The parameters will be discarded later. No functional change. Signed-off-by: Kan Liang --- tools/perf/util/mmap.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) diff --git a/tools/perf/util/mmap.c b/tools/perf/util/mmap.c index 4cb3614..da9e68b 100644 --- a/tools/perf/util/mmap.c +++ b/tools/perf/util/mmap.c @@ -76,8 +76,8 @@ static union perf_event *perf_mmap__read(struct perf_mmap *map, * perf_mmap__read_done() */ union perf_event *perf_mmap__read_event(struct perf_mmap *map, - bool overwrite, - u64 *startp, u64 end) + bool overwrite __maybe_unused, + u64 *startp, u64 end __maybe_unused) { union perf_event *event; @@ -91,13 +91,14 @@ union perf_event *perf_mmap__read_event(struct perf_mmap *map, return NULL; /* non-overwirte doesn't pause the ringbuffer */ - if (!overwrite) - end = perf_mmap__read_head(map); + if (!map->overwrite) + map->end = perf_mmap__read_head(map); - event = perf_mmap__read(map, startp, end); + event = perf_mmap__read(map, &map->start, map->end); + *startp = map->start; - if (!overwrite) - map->prev = *startp; + if (!map->overwrite) + map->prev = map->start; return event; } -- 2.4.11