linux-kernel - [PATCH v1 0/3] perf arm-spe: Correct recording configurations

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Message-Id: <20210429150100.282180-1-leo.yan@linaro.org>
Date:   Thu, 29 Apr 2021 23:00:57 +0800
From:   Leo Yan <leo.yan@...aro.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        James Clark <James.Clark@....com>,
        John Garry <john.garry@...wei.com>,
        Will Deacon <will@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-arm-kernel@...ts.infradead.org,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
        Al Grant <Al.Grant@....com>
Cc:     Leo Yan <leo.yan@...aro.org>
Subject: [PATCH v1 0/3] perf arm-spe: Correct recording configurations

This patch series is to correct Arm SPE recording configurations.

As found by James Clark, it's not reasonable for the current code for
sample flags CPU/TIME/TID which are hard coded.  For TIME sample flag,
since it's always enabled, then Arm SPE has no chance for timeless
tracing; for CPU sample flag, it's not needed for per-thread mode;
for TID sample flag, it's redundant for AUX and dummy events.

This series corrects the sample flags setting, and it enables
timestamp for per-cpu mode tracing by default.

This patch set has been tested on Arm64 Hisilicon D06 platform.

Leo Yan (3):
  perf arm-spe: Correct sample flags for SPE event
  perf arm-spe: Correct sample flags for dummy event
  perf arm-spe: Enable timestamp for per-cpu mode

 tools/perf/arch/arm64/util/arm-spe.c | 66 +++++++++++++++++++++-------
 1 file changed, 50 insertions(+), 16 deletions(-)

-- 
2.25.1