linux-kernel - Re: [PATCH V3] perf tools: Clarify the output of perf sched map.

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Message-ID: <20140506124427.GC1079@krava.brq.redhat.com>
Date:	Tue, 6 May 2014 14:44:27 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	Dongsheng Yang <yangds.fnst@...fujitsu.com>,
	a.p.zijlstra@...llo.nl, paulus@...ba.org, acme@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH V3] perf tools: Clarify the output of perf sched map.

On Tue, May 06, 2014 at 09:23:04AM +0200, Ingo Molnar wrote:
> 
> * Dongsheng Yang <yangds.fnst@...fujitsu.com> wrote:
> 
> > From: Dongsheng <yangds.fnst@...fujitsu.com>
> > 
> > In output of perf sched map, any shortname of thread will be explained
> > at the first time when it appear.
> > 
> > Example:
> >               *A0       228836.978985 secs A0 => perf:23032
> >           *.   A0       228836.979016 secs B0 => swapper:0
> >            .  *C0       228836.979099 secs C0 => migration/3:22
> >   *A0      .   C0       228836.979115 secs
> >    A0      .  *.        228836.979115 secs
> > 
> > But B0, which is explained as swapper:0 did not appear in the
> > left part of output. Instead, we use '.' as the shortname of
> > swapper:0. So the comment of "B0 => swapper:0" is not easy to
> > understand.
> > 
> > This patch clarify the output of perf sched map with not allocating
> > one letter-number shortname for swapper:0 and print ". => swapper:0"
> > as the explaination for swapper:0.
> > 
> > Example:
> >               *A0       228836.978985 secs A0 => perf:23032
> >           * .  A0       228836.979016 secs .  => swapper:0
> >             . *B0       228836.979099 secs B0 => migration/3:22
> >   *A0       .  B0       228836.979115 secs
> >    A0       . * .       228836.979115 secs
> >    A0     *C0   .       228836.979225 secs C0 => ksoftirqd/2:18
> >    A0     *D0   .       228836.979236 secs D0 => rcu_sched:7
> > 
> > Signed-off-by: Dongsheng <yangds.fnst@...fujitsu.com>
> > Acked-by: Ingo Molnar <mingo@...nel.org>
> 
> Looks good to me, thanks!

thanks, I'll queue this patchset

jirka
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