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[18.166.74.158]) by smtp.gmail.com with ESMTPSA id pc17sm5010138pjb.19.2021.04.28.04.58.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 28 Apr 2021 04:58:11 -0700 (PDT) From: Leo Yan To: Arnaldo Carvalho de Melo , Adrian Hunter , Peter Zijlstra , Ingo Molnar , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Ian Rogers , Steve MacLean , Yonatan Goldschmidt , "Gustavo A. R. Silva" , Kan Liang , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Leo Yan Subject: [PATCH v2 0/4] perf: Allow TIME_CONV to be backwards-compatible and dump it Date: Wed, 28 Apr 2021 19:57:45 +0800 Message-Id: <20210428115749.5229-1-leo.yan@linaro.org> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The event PERF_RECORD_TIME_CONV was extended for clock parameters, but the tool fails to be backwards-compatible for the old event format. Based on checking the event size, this patch series can decide if the extended clock parameters are contained in the perf event or not. This allows the event PERF_RECORD_TIME_CONV to be backwards-compatible. The last patch also is introduced for dumping the event, for both the old and latest event formats. The patch set has been rebased on perf/core branch with: commit 4c391ea001cb ("perf beauty: Fix fsconfig generator") And the patches have been tested on Arm64 HiSilicon D06 platform. Changes from v1: * Changed from bool to __u8 for perf_record_time_conv (Adrain); * Added helper event_contains() and used it (Adrian). Leo Yan (4): perf tool: Change fields type in cap_user_time_short perf jit: Let convert_timestamp() to be backwards-compatible perf session: Add swap operation for event TIME_CONV perf session: Dump PERF_RECORD_TIME_CONV event tools/lib/perf/include/perf/event.h | 7 +++++-- tools/perf/util/jitdump.c | 30 +++++++++++++++++++---------- tools/perf/util/session.c | 28 +++++++++++++++++++++++++-- tools/perf/util/tsc.c | 30 +++++++++++++++++++++++++++++ tools/perf/util/tsc.h | 4 ++++ 5 files changed, 85 insertions(+), 14 deletions(-) -- 2.25.1