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From: Shunsuke Nakamura <nakamura.shun@fujitsu.com>
To: peterz@infradead.org, mingo@redhat.com, acme@kernel.org,
	mark.rutland@arm.com, alexander.shishkin@linux.intel.com,
	jolsa@redhat.com, namhyung@kernel.org
Cc: linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org
Subject: [PATCH 0/3] libperf: Add support for scaling counters obtained from the read() system call during multiplexing
Date: Fri, 20 Aug 2021 18:39:05 +0900	[thread overview]
Message-ID: <20210820093908.734503-1-nakamura.shun@fujitsu.com> (raw)

This patch series supports counter scaling when perf_evsel__read() obtains a counter
using the read() system call during multiplexing.

The first patch adds scaling of counters obtained from the read() system call
during multiplexing.

The second patch fixes verbose printing.

The third patch adds a test for the first patch.
This patch is based on Vince's rdpmc_multiplexing.c [1]


[1] https://github.com/deater/perf_event_tests/blob/master/tests/rdpmc/rdpmc_multiplexing.c


Shunsuke Nakamura (3):
  libperf: Add processing to scale the counters obtained during the read
    () system call when multiplexing
  libperf tests: Fix verbose printing
  libperf tests: Add test_stat_multiplexing test

 tools/lib/perf/evsel.c                  |   4 +
 tools/lib/perf/include/internal/tests.h |   2 +
 tools/lib/perf/tests/test-evlist.c      | 138 ++++++++++++++++++++++++
 3 files changed, 144 insertions(+)

-- 
2.25.1


             reply	other threads:[~2021-08-20  9:46 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-20  9:39 Shunsuke Nakamura [this message]
2021-08-20  9:39 ` [PATCH 1/3] libperf: Add processing to scale the counters obtained during the read() system call when multiplexing Shunsuke Nakamura
2021-08-23 20:12   ` Rob Herring
2021-08-24 10:11     ` nakamura.shun
2021-08-31  8:58       ` nakamura.shun
2021-08-31 12:26       ` Rob Herring
2021-09-07 23:59         ` Ian Rogers
2021-09-17  8:04           ` nakamura.shun
2021-08-20  9:39 ` [PATCH 2/3] libperf tests: Fix verbose printing Shunsuke Nakamura
2021-08-23 20:26   ` Rob Herring
2021-08-24 18:06     ` Arnaldo Carvalho de Melo
2021-08-20  9:39 ` [PATCH 3/3] libperf tests: Add test_stat_multiplexing test Shunsuke Nakamura

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