From: Vince Weaver <vincent.weaver@maine.edu>
To: Namhyung Kim <namhyung@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Jiri Olsa <jolsa@redhat.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Mark Rutland <mark.rutland@arm.com>,
Stephane Eranian <eranian@google.com>,
LKML <linux-kernel@vger.kernel.org>,
linux-perf-users@vger.kernel.org, Tejun Heo <tj@kernel.org>,
Li Zefan <lizefan@huawei.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Adrian Hunter <adrian.hunter@intel.com>
Subject: Re: [PATCHSET 0/9] perf: Improve cgroup profiling (v3)
Date: Mon, 23 Dec 2019 12:35:47 -0500 (EST) [thread overview]
Message-ID: <alpine.DEB.2.21.1912231235090.775@macbook-air> (raw)
In-Reply-To: <20191223060759.841176-1-namhyung@kernel.org>
On Mon, 23 Dec 2019, Namhyung Kim wrote:
> This work is to improve cgroup profiling in perf. Currently it only
> supports profiling tasks in a specific cgroup and there's no way to
> identify which cgroup the current sample belongs to. So I added
> PERF_SAMPLE_CGROUP to add cgroup id into each sample. It's a 64-bit
> integer having file handle of the cgroup. And kernel also generates
> PERF_RECORD_CGROUP event for new groups to correlate the cgroup id and
> cgroup name (path in the cgroup filesystem). The cgroup id can be
> read from userspace by name_to_handle_at() system call so it can
> synthesize the CGROUP event for existing groups.
so is there a patch to the manpage that describes this new behavior in
perf_event_open()?
Vince
next prev parent reply other threads:[~2019-12-23 17:35 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-23 6:07 [PATCHSET 0/9] perf: Improve cgroup profiling (v3) Namhyung Kim
2019-12-23 6:07 ` [PATCH 1/9] perf/core: Add PERF_RECORD_CGROUP event Namhyung Kim
2020-01-07 12:51 ` Peter Zijlstra
2020-01-07 13:46 ` Namhyung Kim
2019-12-23 6:07 ` [PATCH 2/9] perf/core: Add PERF_SAMPLE_CGROUP feature Namhyung Kim
2019-12-23 6:07 ` [PATCH 3/9] perf tools: Basic support for CGROUP event Namhyung Kim
2019-12-23 6:07 ` [PATCH 4/9] perf tools: Maintain cgroup hierarchy Namhyung Kim
2019-12-23 6:07 ` [PATCH 5/9] perf report: Add 'cgroup' sort key Namhyung Kim
2019-12-23 6:07 ` [PATCH 6/9] perf record: Support synthesizing cgroup events Namhyung Kim
2019-12-23 6:07 ` [PATCH 7/9] perf record: Add --all-cgroups option Namhyung Kim
2019-12-23 6:07 ` [PATCH 8/9] perf top: " Namhyung Kim
2019-12-23 6:07 ` [PATCH 9/9] perf script: Add --show-cgroup-events option Namhyung Kim
2019-12-23 17:35 ` Vince Weaver [this message]
2019-12-24 0:40 ` [PATCHSET 0/9] perf: Improve cgroup profiling (v3) Namhyung Kim
2019-12-26 12:46 ` Arnaldo Carvalho de Melo
2019-12-27 18:31 ` Vince Weaver
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