From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Adrian Hunter <adrian.hunter@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>,
Andi Kleen <ak@linux.intel.com>, Ingo Molnar <mingo@kernel.org>,
linux-kernel@vger.kernel.org, Jiri Olsa <jolsa@redhat.com>,
Stephane Eranian <eranian@google.com>,
mathieu.poirier@linaro.org, Pawel Moll <pawel.moll@arm.com>
Subject: Re: [PATCH V3 1/4] perf: Add PERF_RECORD_SWITCH to indicate context switches
Date: Wed, 8 Jul 2015 11:56:56 -0300 [thread overview]
Message-ID: <20150708145656.GB31332@kernel.org> (raw)
In-Reply-To: <559D28AB.4080201@intel.com>
Em Wed, Jul 08, 2015 at 04:42:03PM +0300, Adrian Hunter escreveu:
> On 08/07/15 16:28, Arnaldo Carvalho de Melo wrote:
> > Em Wed, Jul 08, 2015 at 12:52:40AM +0200, Peter Zijlstra escreveu:
> >> On Tue, Jul 07, 2015 at 01:13:59PM -0300, Arnaldo Carvalho de Melo wrote:
> >>> Em Tue, Jul 07, 2015 at 05:36:14PM +0200, Peter Zijlstra escreveu:
> >> I was just thinking that 2 records, each with a fixed layout would be
> >> easier to parse than 1 record with variable layout.
> >> The record space is immense, so from that point it really doesn't
> >> matter.
> > We could do a land grab at some point there, if/when we find some reason
> > for that... :-)
> >> Do whatever is easiest, less mistakes get made etc. :-)
> >> No real preference either way, as long we we've thought about it.
> > Right, I just don't want to have two u32 carrying -1 for no reason.
> So you'd be OK with 2 RECORD types?
Yeah, no problem.
> I will see what is involved.
Ok.
- Arnaldo
next prev parent reply other threads:[~2015-07-08 14:57 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-07 8:36 [PATCH V3 0/4] perf: Add PERF_RECORD_SWITCH to indicate context switches Adrian Hunter
2015-07-07 8:36 ` [PATCH V3 1/4] " Adrian Hunter
2015-07-07 13:25 ` Arnaldo Carvalho de Melo
2015-07-07 13:44 ` Arnaldo Carvalho de Melo
2015-07-07 15:36 ` Peter Zijlstra
2015-07-07 16:13 ` Arnaldo Carvalho de Melo
2015-07-07 22:52 ` Peter Zijlstra
2015-07-08 13:28 ` Arnaldo Carvalho de Melo
2015-07-08 13:42 ` Adrian Hunter
2015-07-08 14:56 ` Arnaldo Carvalho de Melo [this message]
2015-07-07 8:36 ` [PATCH V3 2/4] perf tools: Add new PERF_RECORD_SWITCH event Adrian Hunter
2015-07-07 13:50 ` Arnaldo Carvalho de Melo
2015-07-07 8:36 ` [PATCH V3 3/4] perf record: Add option --switch-events to select PERF_RECORD_SWITCH events Adrian Hunter
2015-07-07 13:53 ` Arnaldo Carvalho de Melo
2015-07-07 8:36 ` [PATCH V3 4/4] perf script: Add option --show-switch-events Adrian Hunter
2015-07-07 13:54 ` Arnaldo Carvalho de Melo
2015-07-07 9:06 ` [PATCH V3 0/4] perf: Add PERF_RECORD_SWITCH to indicate context switches Peter Zijlstra
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