From: Jiri Olsa <jolsa@redhat.com>
To: kan.liang@intel.com
Cc: peterz@infradead.org, mingo@redhat.com, acme@kernel.org,
linux-kernel@vger.kernel.org, alexander.shishkin@linux.intel.com,
tglx@linutronix.de, namhyung@kernel.org, jolsa@kernel.org,
adrian.hunter@intel.com, wangnan0@huawei.com,
mark.rutland@arm.com, andi@firstfloor.org
Subject: Re: [PATCH V2 07/13] perf tools: handle PERF_RECORD_OVERHEAD record type
Date: Tue, 6 Dec 2016 12:16:08 +0100 [thread overview]
Message-ID: <20161206111608.GA7730@krava> (raw)
In-Reply-To: <1480713561-6617-8-git-send-email-kan.liang@intel.com>
On Fri, Dec 02, 2016 at 04:19:15PM -0500, kan.liang@intel.com wrote:
> From: Kan Liang <kan.liang@intel.com>
>
> The infrastructure to handle PERF_RECORD_OVERHEAD record type.
> A new perf report option is introduced as a knob to show the profiling
> overhead information. The option also forces tty output.
>
> The overhead information is auxillary information, so it should be
> possible to access it together with normal sampling information in a
> single output file. But the overhead is overall profiling time cost, not
> per-sample/event profiling time cost. Making overhead a standard sort
> key could confuse the normal samples.
> So the information is printed separately in the head of the output.
>
> Signed-off-by: Kan Liang <kan.liang@intel.com>
> ---
> tools/perf/Documentation/perf-report.txt | 3 +++
> tools/perf/builtin-report.c | 16 +++++++++++++++-
> tools/perf/util/event.c | 9 +++++++++
> tools/perf/util/event.h | 11 +++++++++++
> tools/perf/util/evlist.c | 6 ++++++
> tools/perf/util/evlist.h | 1 +
> tools/perf/util/machine.c | 10 ++++++++++
> tools/perf/util/machine.h | 3 +++
> tools/perf/util/session.c | 21 +++++++++++++++++++++
> tools/perf/util/session.h | 3 +++
> tools/perf/util/symbol.h | 3 ++-
> tools/perf/util/tool.h | 1 +
> 12 files changed, 85 insertions(+), 2 deletions(-)
I think also perf inject needs repipe this overhead handler
jirka
next prev parent reply other threads:[~2016-12-06 11:16 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-02 21:19 [PATCH V2 00/13] export perf overheads information kan.liang
2016-12-02 21:19 ` [PATCH V2 01/13] perf/core: Introduce PERF_RECORD_OVERHEAD kan.liang
2016-12-06 11:26 ` Peter Zijlstra
2016-12-02 21:19 ` [PATCH V2 02/13] perf/core: output overhead when sched out from context kan.liang
2016-12-06 11:21 ` Peter Zijlstra
2016-12-02 21:19 ` [PATCH V2 03/13] perf/x86: output sampling overhead kan.liang
2016-12-06 11:20 ` Peter Zijlstra
2016-12-06 15:02 ` Liang, Kan
2016-12-06 15:32 ` Peter Zijlstra
2016-12-06 15:47 ` Liang, Kan
2016-12-06 18:26 ` Peter Zijlstra
2016-12-07 19:03 ` Liang, Kan
2016-12-06 11:38 ` Peter Zijlstra
2016-12-02 21:19 ` [PATCH V2 04/13] perf/core: output multiplexing overhead kan.liang
2016-12-06 11:23 ` Peter Zijlstra
2016-12-06 15:04 ` Liang, Kan
2016-12-02 21:19 ` [PATCH V2 05/13] perf/core: output side-band events overhead kan.liang
2016-12-06 11:25 ` Peter Zijlstra
2016-12-02 21:19 ` [PATCH V2 06/13] perf tools: option to disable overhead collection kan.liang
2016-12-02 21:19 ` [PATCH V2 07/13] perf tools: handle PERF_RECORD_OVERHEAD record type kan.liang
2016-12-06 11:16 ` Jiri Olsa [this message]
2016-12-02 21:19 ` [PATCH V2 08/13] perf tools: show kernel overhead kan.liang
2016-12-06 11:16 ` Jiri Olsa
2016-12-06 11:16 ` Jiri Olsa
2016-12-06 11:16 ` Jiri Olsa
2016-12-02 21:19 ` [PATCH V2 09/13] perf script: " kan.liang
2016-12-04 21:25 ` Jiri Olsa
2016-12-05 14:47 ` Liang, Kan
2016-12-02 21:19 ` [PATCH V2 10/13] perf tools: add time related functions kan.liang
2016-12-06 11:16 ` Jiri Olsa
2016-12-02 21:19 ` [PATCH V2 11/13] perf tools: introduce PERF_RECORD_USER_OVERHEAD kan.liang
2016-12-02 21:19 ` [PATCH V2 12/13] perf tools: record user space profiling cost kan.liang
2016-12-02 21:19 ` [PATCH V2 13/13] perf report: warn on high overhead kan.liang
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