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 v4] perf tools: add support for libpfm4
Date: Mon, 23 Mar 2020 11:56:56 +0100 [thread overview]
Message-ID: <20200323105656.GC1534489@krava> (raw)
In-Reply-To: <20200319041134.116241-1-irogers@google.com>
On Wed, Mar 18, 2020 at 09:11:34PM -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 ....
>
> v4 is a rebase on git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git
> branch perf/core and re-adds the tools/build/feature/test-libpfm4.c
> missed in v3.
ugh.. I might have waited too long, but I can't apply it
anymore on Arnaldo's perf/core, sorry
jirka
next prev parent reply other threads:[~2020-03-23 10:57 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-19 4:11 [PATCH v4] perf tools: add support for libpfm4 Ian Rogers
2020-03-23 10:56 ` Jiri Olsa [this message]
2020-03-24 0:01 ` Ian Rogers
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