From: Peter Zijlstra <peterz@infradead.org>
To: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ingo Molnar <mingo@kernel.org>,
Arnaldo Carvalho de Melo <acme@infradead.org>,
linux-kernel@vger.kernel.org, David Ahern <dsahern@gmail.com>,
Frederic Weisbecker <fweisbec@gmail.com>,
Ingo Molnar <mingo@redhat.com>, Jiri Olsa <jolsa@redhat.com>,
Mike Galbraith <efault@gmx.de>, Namhyung Kim <namhyung@gmail.com>,
Paul Mackerras <paulus@samba.org>,
Stephane Eranian <eranian@google.com>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
Namhyung Kim <namhyung@kernel.org>
Subject: Re: [PATCH 10/10] perf record: Add an option to force per-cpu mmaps
Date: Fri, 15 Nov 2013 13:53:14 +0100 [thread overview]
Message-ID: <20131115125314.GH10456@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <5286191C.1090601@intel.com>
On Fri, Nov 15, 2013 at 02:52:44PM +0200, Adrian Hunter wrote:
> On 15/11/13 14:03, Peter Zijlstra wrote:
> > On Fri, Nov 15, 2013 at 12:56:29PM +0100, Ingo Molnar wrote:
> >> So, here's the current status quo, there's 4 basic types of profiling
> >> that 99% of the people are using, in order of popularity:
> >>
> >> perf record <cmd>
> >> perf record -a sleep N
> >> perf record -p <PID>
> >> perf record -t <TID>
> >>
> >> The first two (which I'd guess comprise about 95% of real-world usage)
> >> have inheritance enabled.
> >>
> >> The last two (-p/-t) have inheritance disabled by default.
> >
> > Yes, and I would expect it to be disabled for the TID option as you
> > explicitly select a single threads.
>
> So you want -t to imply -i ?
>
> That means if you want inheritance you have to do
>
> -t <TID> --no-no-inherit
>
> Or do you want another option --inherit
/me boggles, they're not the same? ;-)
Maybe we should extend the option parser to know that a double negative
is a nop :-)
next prev parent reply other threads:[~2013-11-15 12:53 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-14 20:25 [GIT PULL 00/10] perf/core improvements and fixes Arnaldo Carvalho de Melo
2013-11-14 20:25 ` [PATCH 01/10] perf trace: Tweak summary output Arnaldo Carvalho de Melo
2013-11-14 20:25 ` [PATCH 02/10] perf tools: Remove trivial extra semincolon Arnaldo Carvalho de Melo
2013-11-14 20:25 ` [PATCH 03/10] perf top: Add missing newline if the 'uid' is invalid Arnaldo Carvalho de Melo
2013-11-14 20:25 ` [PATCH 04/10] perf tools: Synthesize anon MMAP records again Arnaldo Carvalho de Melo
2013-11-14 20:25 ` [PATCH 05/10] perf tools: Use perf_evlist__{first,last}, perf_evsel__next Arnaldo Carvalho de Melo
2013-11-14 20:25 ` [PATCH 06/10] perf evsel: Introduce perf_evsel__prev() method Arnaldo Carvalho de Melo
2013-11-14 20:25 ` [PATCH 07/10] perf symbols: Limit max callchain using max_stack on DWARF unwinding too Arnaldo Carvalho de Melo
2013-11-14 20:25 ` [PATCH 08/10] perf ui browser: Fix segfault caused by off by one handling END key Arnaldo Carvalho de Melo
2013-11-14 20:25 ` [PATCH 09/10] perf probe: Add '--demangle'/'--no-demangle' Arnaldo Carvalho de Melo
2013-11-14 20:25 ` [PATCH 10/10] perf record: Add an option to force per-cpu mmaps Arnaldo Carvalho de Melo
2013-11-15 6:06 ` Ingo Molnar
2013-11-15 11:00 ` Adrian Hunter
2013-11-15 11:10 ` Ingo Molnar
2013-11-15 11:27 ` Adrian Hunter
2013-11-15 11:56 ` Ingo Molnar
2013-11-15 12:03 ` Peter Zijlstra
2013-11-15 12:05 ` Ingo Molnar
2013-11-15 12:30 ` Peter Zijlstra
2013-11-15 12:33 ` Adrian Hunter
2013-11-15 12:52 ` Adrian Hunter
2013-11-15 12:53 ` Peter Zijlstra [this message]
2013-11-15 13:52 ` [PATCH V2] perf record: Make per-cpu mmaps the default Adrian Hunter
2013-11-30 12:50 ` [tip:perf/core] " tip-bot for Adrian Hunter
2013-11-15 6:38 ` [GIT PULL 00/10] perf/core improvements and fixes Ingo Molnar
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