From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ingo Molnar <mingo@kernel.org>,
linux-kernel@vger.kernel.org, Jiri Olsa <jolsa@redhat.com>,
Stephane Eranian <eranian@google.com>
Subject: Re: [PATCH V6 08/17] perf tools: Add Intel PT support
Date: Fri, 26 Jun 2015 12:08:18 -0300 [thread overview]
Message-ID: <20150626150818.GD3265@kernel.org> (raw)
In-Reply-To: <558D57FB.6090704@intel.com>
Em Fri, Jun 26, 2015 at 04:47:39PM +0300, Adrian Hunter escreveu:
> On 26/06/15 16:41, Arnaldo Carvalho de Melo wrote:
> >> Another thing, the intel_bts implementation does not support
> >> "instructions" samples because there is no timing information to
> >> use to create periodic samples. But callchains are added only
> >> to "instructions" samples so there are no callchains in 'perf report'
> >> for intel_bts. The call information is still available for
> >
> > Humm, so IOW, what you say is that we should refuse to run 'record' when
> > asking for callchains and intel_bts?
>
> 'record' can record other events at the same time which can have callchains.
> e.g.
>
> perf record -g --per-thread -e intel_bts//u,branch-misses:u ls
Right, what I was trying to say is that there are combinations where one
can ask for a callchain in record, it will act as if it did what was
asked for but then when report runs, no callchain will be available.
I guess we can check for that situation and warn the user.
- Arnaldo
next prev parent reply other threads:[~2015-06-26 15:08 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-29 13:33 [PATCH V6 00/17] perf tools: Introduce an abstraction for AUX Area and Instruction Tracing Adrian Hunter
2015-05-29 13:33 ` [PATCH V6 01/17] perf db-export: Fix thread ref-counting Adrian Hunter
2015-05-29 18:35 ` [tip:perf/core] " tip-bot for Adrian Hunter
2015-05-29 13:33 ` [PATCH V6 02/17] perf tools: Ensure thread-stack is flushed Adrian Hunter
2015-06-18 21:56 ` Arnaldo Carvalho de Melo
2015-06-19 5:50 ` Adrian Hunter
2015-06-19 23:15 ` [tip:perf/core] " tip-bot for Adrian Hunter
2015-05-29 13:33 ` [PATCH V6 03/17] perf auxtrace: Add Intel PT as an AUX area tracing type Adrian Hunter
2015-05-29 13:33 ` [PATCH V6 04/17] perf tools: Add Intel PT packet decoder Adrian Hunter
2015-05-29 13:33 ` [PATCH V6 05/17] perf tools: Add Intel PT instruction decoder Adrian Hunter
2015-06-18 22:29 ` Arnaldo Carvalho de Melo
2015-06-19 15:44 ` Arnaldo Carvalho de Melo
2015-06-22 12:40 ` Adrian Hunter
2015-05-29 13:33 ` [PATCH V6 06/17] perf tools: Add Intel PT log Adrian Hunter
2015-05-29 13:33 ` [PATCH V6 07/17] perf tools: Add Intel PT decoder Adrian Hunter
2015-05-29 13:33 ` [PATCH V6 08/17] perf tools: Add Intel PT support Adrian Hunter
2015-06-19 16:04 ` Arnaldo Carvalho de Melo
2015-06-19 16:22 ` Arnaldo Carvalho de Melo
2015-06-19 19:33 ` Adrian Hunter
2015-06-19 19:41 ` Arnaldo Carvalho de Melo
2015-06-22 18:24 ` Arnaldo Carvalho de Melo
2015-06-22 20:26 ` Adrian Hunter
2015-06-22 23:00 ` Arnaldo Carvalho de Melo
2015-06-23 6:29 ` Adrian Hunter
2015-06-23 15:15 ` Arnaldo Carvalho de Melo
2015-06-25 13:37 ` Adrian Hunter
2015-06-25 13:45 ` Arnaldo Carvalho de Melo
2015-06-25 23:56 ` Arnaldo Carvalho de Melo
2015-06-26 0:09 ` Arnaldo Carvalho de Melo
2015-06-26 6:48 ` Adrian Hunter
2015-06-26 13:41 ` Arnaldo Carvalho de Melo
2015-06-26 13:47 ` Adrian Hunter
2015-06-26 15:08 ` Arnaldo Carvalho de Melo [this message]
2015-06-26 20:34 ` Arnaldo Carvalho de Melo
2015-05-29 13:33 ` [PATCH V6 09/17] perf tools: Take Intel PT into use Adrian Hunter
2015-05-29 13:33 ` [PATCH V6 10/17] perf tools: Allow auxtrace data alignment Adrian Hunter
2015-06-25 7:58 ` [tip:perf/core] " tip-bot for Adrian Hunter
2015-05-29 13:33 ` [PATCH V6 11/17] perf tools: Add Intel BTS support Adrian Hunter
2015-05-29 13:33 ` [PATCH V6 12/17] perf tools: Output sample flags and insn_len from intel_pt Adrian Hunter
2015-05-29 13:33 ` [PATCH V6 13/17] perf tools: Output sample flags and insn_len from intel_bts Adrian Hunter
2015-05-29 13:33 ` [PATCH V6 14/17] perf tools: Intel PT to always update thread stack trace number Adrian Hunter
2015-05-29 13:33 ` [PATCH V6 15/17] perf tools: Intel BTS " Adrian Hunter
2015-06-19 16:11 ` Arnaldo Carvalho de Melo
2015-06-22 12:38 ` Adrian Hunter
2015-06-22 14:33 ` Arnaldo Carvalho de Melo
2015-05-29 13:33 ` [PATCH V6 16/17] perf tools: Put itrace options into an asciidoc include Adrian Hunter
2015-05-29 13:33 ` [PATCH V6 17/17] perf tools: Add example call-graph script Adrian Hunter
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