From: Jiri Olsa <jolsa@redhat.com>
To: Ian Rogers <irogers@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Namhyung Kim <namhyung@kernel.org>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Martin KaFai Lau <kafai@fb.com>, Yonghong Song <yhs@fb.com>,
Andrii Nakryiko <andriin@fb.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Thomas Gleixner <tglx@linutronix.de>,
Igor Lubashev <ilubashe@akamai.com>,
Alexey Budankov <alexey.budankov@linux.intel.com>,
Florian Fainelli <f.fainelli@gmail.com>,
Adrian Hunter <adrian.hunter@intel.com>,
Andi Kleen <ak@linux.intel.com>,
Jiwei Sun <jiwei.sun@windriver.com>,
yuzhoujian <yuzhoujian@didichuxing.com>,
Kan Liang <kan.liang@linux.intel.com>,
Jin Yao <yao.jin@linux.intel.com>, Leo Yan <leo.yan@linaro.org>,
John Garry <john.garry@huawei.com>,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
bpf@vger.kernel.org, linux-perf-users@vger.kernel.org,
Stephane Eranian <eranian@google.com>
Subject: Re: [PATCH v11 0/4] perf tools: add support for libpfm4
Date: Fri, 17 Apr 2020 11:08:10 +0200 [thread overview]
Message-ID: <20200417090810.GA468827@krava> (raw)
In-Reply-To: <20200416221457.46710-1-irogers@google.com>
On Thu, Apr 16, 2020 at 03:14:53PM -0700, Ian Rogers wrote:
> This patch links perf with the libpfm4 library if it is available
> and NO_LIBPFM4 isn't passed to the build. The libpfm4 library
> contains hardware event tables for all processors supported by
> perf_events. It is a helper library that helps convert from a
> symbolic event name to the event encoding required by the
> underlying kernel interface. This library is open-source and
> available from: http://perfmon2.sf.net.
>
> With this patch, it is possible to specify full hardware events
> by name. Hardware filters are also supported. Events must be
> specified via the --pfm-events and not -e option. Both options
> are active at the same time and it is possible to mix and match:
>
> $ perf stat --pfm-events inst_retired:any_p:c=1:i -e cycles ....
>
> v11 reformats the perf list output to be:
> List of pre-defined events (to be used in -e):
>
> branch-instructions OR branches [Hardware event]
> branch-misses [Hardware event]
> ...
>
> List of pre-defined events (to be used in --pfm-events):
>
> ix86arch:
> UNHALTED_CORE_CYCLES
> [count core clock cycles whenever the clock signal on the specific core is running (not halted)]
> INSTRUCTION_RETIRED
> [count the number of instructions at retirement. For instructions that consists of multiple mic>
> ...
> skx:
> UNHALTED_CORE_CYCLES
> [Count core clock cycles whenever the clock signal on the specific core is running (not halted)]
> ...
> BACLEARS
> [Branch re-steered]
> BACLEARS:ANY
> [Number of front-end re-steers due to BPU misprediction]
> ...
Acked-by: Jiri Olsa <jolsa@redhat.com>
thanks,
jirka
prev parent reply other threads:[~2020-04-17 9:09 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-16 22:14 [PATCH v11 0/4] perf tools: add support for libpfm4 Ian Rogers
2020-04-16 22:14 ` [PATCH v11 1/4] perf doc: allow ASCIIDOC_EXTRA to be an argument Ian Rogers
2020-04-16 22:14 ` [PATCH v11 2/4] tools feature: add support for detecting libpfm4 Ian Rogers
2020-04-16 22:14 ` [PATCH v11 3/4] perf pmu: add perf_pmu__find_by_type helper Ian Rogers
2020-04-16 22:14 ` [PATCH v11 4/4] perf tools: add support for libpfm4 Ian Rogers
2020-04-17 9:08 ` Jiri Olsa [this message]
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