From: Andi Kleen <ak@linux.intel.com>
To: Stephane Eranian <eranian@google.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
"mingo@elte.hu" <mingo@elte.hu>,
"Liang, Kan" <kan.liang@intel.com>, Jiri Olsa <jolsa@redhat.com>
Subject: Re: [PATCH 0/5] perf: add support for capturing skid IP
Date: Fri, 16 Jun 2017 10:50:20 -0700 [thread overview]
Message-ID: <20170616175020.GF4789@tassilo.jf.intel.com> (raw)
In-Reply-To: <CABPqkBRB5sB5_OY0UNmKUsamqHMFnTkS+Xe9fjSDzBdi2rxU5Q@mail.gmail.com>
> > Yeah, I think it is easier and more portable, especially on hardware with a
> > PEBS-like mechanism but no branch buffer (like LBR). FYI, I did do a test
> > implementation yesterday to evaluate the difficulty.
> >
> A more generalized usage of the feature is to evaluate the amount of skid
> for any precise event.
It should be always the same (one instruction), except for the control flow
change case.
-Andi
next prev parent reply other threads:[~2017-06-16 17:50 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-15 13:56 [PATCH 0/5] perf: add support for capturing skid IP Stephane Eranian
2017-06-15 13:56 ` [PATCH 1/5] perf/core: add PERF_SAMPLE_SKID_IP record type Stephane Eranian
2017-06-15 13:56 ` [PATCH 2/5] perf/x86: add PERF_SAMPLE_SKID_IP support for X86 PEBS Stephane Eranian
2017-06-15 15:40 ` Liang, Kan
2017-06-15 16:39 ` Stephane Eranian
2017-06-15 17:18 ` Liang, Kan
2017-06-15 19:19 ` Stephane Eranian
2017-06-15 13:56 ` [PATCH 3/5] perf/tools: add support for PERF_SAMPLE_SKID_IP Stephane Eranian
2017-06-15 13:56 ` [PATCH 4/5] perf/record: add support for sampling skid ip Stephane Eranian
2017-06-15 13:56 ` [PATCH 5/5] perf/script: add support for " Stephane Eranian
2017-06-15 15:10 ` [PATCH 0/5] perf: add support for capturing skid IP Andi Kleen
2017-06-15 16:44 ` Stephane Eranian
2017-06-15 17:23 ` Andi Kleen
2017-06-15 19:35 ` Stephane Eranian
2017-06-15 20:02 ` Andi Kleen
2017-06-15 20:20 ` Stephane Eranian
2017-06-15 22:28 ` Stephane Eranian
2017-06-15 23:18 ` Andi Kleen
2017-06-16 6:52 ` Stephane Eranian
2017-06-16 16:06 ` Andi Kleen
2017-06-16 17:08 ` Stephane Eranian
2017-06-16 17:12 ` Stephane Eranian
2017-06-16 17:50 ` Andi Kleen [this message]
2017-06-16 19:15 ` Stephane Eranian
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