From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>, Andi Kleen <ak@linux.intel.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH V3 0/6] perf dlfilter: Add dlfilter-show-cycles
Date: Wed, 27 Oct 2021 16:18:37 -0300 [thread overview]
Message-ID: <YXmmDci4+9P6NCoG@kernel.org> (raw)
In-Reply-To: <20211027080334.365596-1-adrian.hunter@intel.com>
Em Wed, Oct 27, 2021 at 11:03:28AM +0300, Adrian Hunter escreveu:
> Hi
>
> The issue with V1 was that the IPC information used to accumulate cycle
> counts has a lower granularity because it is output only when the cycle
> count correlates to the IP of the event i.e. only when the IPC is exactly
> correct.
>
> To enable more frequent updates to the cycle count, itrace option 'A' is
> added, which specifies that IPC information can be approximate.
>
> In addition there are some new miscellaneous patches.
Ok, replacing v2 with this one.
>
> Changes in V3:
>
> perf intel-pt: Support itrace A option to approximate IPC
> Expanded explanation of the loss of accuracy of IPC with 'A' option.
>
> Added Reviewed-by: Andi Kleen <ak@linux.intel.com>
>
>
> Changes in V2:
>
> perf dlfilter: Add dlfilter-show-cycles
> Separate counts for branches, instructions or other events.
>
> New patches:
> perf auxtrace: Add missing Z option to ITRACE_HELP
> perf auxtrace: Add itrace A option to approximate IPC
> perf intel-pt: Support itrace A option to approximate IPC
> perf auxtrace: Add itrace d+o option to direct debug log to stdout
> perf intel-pt: Support itrace d+o option to direct debug log to stdout
>
>
> Adrian Hunter (6):
> perf auxtrace: Add missing Z option to ITRACE_HELP
> perf auxtrace: Add itrace A option to approximate IPC
> perf intel-pt: Support itrace A option to approximate IPC
> perf dlfilter: Add dlfilter-show-cycles
> perf auxtrace: Add itrace d+o option to direct debug log to stdout
> perf intel-pt: Support itrace d+o option to direct debug log to stdout
>
> tools/perf/Documentation/itrace.txt | 2 +
> tools/perf/Documentation/perf-intel-pt.txt | 28 ++++
> tools/perf/Makefile.perf | 2 +-
> tools/perf/dlfilters/dlfilter-show-cycles.c | 144 +++++++++++++++++++++
> tools/perf/util/auxtrace.c | 3 +
> tools/perf/util/auxtrace.h | 6 +
> .../perf/util/intel-pt-decoder/intel-pt-decoder.c | 1 +
> .../perf/util/intel-pt-decoder/intel-pt-decoder.h | 1 +
> tools/perf/util/intel-pt-decoder/intel-pt-log.c | 8 +-
> tools/perf/util/intel-pt.c | 21 ++-
> 10 files changed, 205 insertions(+), 11 deletions(-)
> create mode 100644 tools/perf/dlfilters/dlfilter-show-cycles.c
>
>
> Regards
> Adrian
--
- Arnaldo
prev parent reply other threads:[~2021-10-27 19:18 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-27 8:03 [PATCH V3 0/6] perf dlfilter: Add dlfilter-show-cycles Adrian Hunter
2021-10-27 8:03 ` [PATCH V3 1/6] perf auxtrace: Add missing Z option to ITRACE_HELP Adrian Hunter
2021-10-27 8:03 ` [PATCH V3 2/6] perf auxtrace: Add itrace A option to approximate IPC Adrian Hunter
2021-10-27 8:03 ` [PATCH V3 3/6] perf intel-pt: Support " Adrian Hunter
2021-10-27 8:03 ` [PATCH V3 4/6] perf dlfilter: Add dlfilter-show-cycles Adrian Hunter
2021-10-27 8:03 ` [PATCH V3 5/6] perf auxtrace: Add itrace d+o option to direct debug log to stdout Adrian Hunter
2021-10-27 8:03 ` [PATCH V3 6/6] perf intel-pt: Support " Adrian Hunter
2021-10-27 19:18 ` Arnaldo Carvalho de Melo [this message]
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