linux-kernel - Re: [GIT PULL 0/9] perf/core improvements and fixes

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Message-ID: <20120126111648.GH3853@elte.hu>
Date:	Thu, 26 Jan 2012 12:16:48 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Arnaldo Carvalho de Melo <acme@...radead.org>
Cc:	linux-kernel@...r.kernel.org, David Ahern <dsahern@...il.com>,
	David Daney <david.daney@...ium.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Jan Beulich <jbeulich@...e.com>,
	Joerg Roedel <joerg.roedel@....com>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Mike Galbraith <efault@....de>,
	Namhyung Kim <namhyung.kim@....com>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Stephane Eranian <eranian@...gle.com>, arnaldo.melo@...il.com
Subject: Re: [GIT PULL 0/9] perf/core improvements and fixes


* Arnaldo Carvalho de Melo <acme@...radead.org> wrote:

> Hi Ingo,
> 
> 	This is a signed tag, please lemme know if everything went well.
> 
> 	The --uid feature works for root, we still need to 
> sort out that paranoia with some threads owned by a user that 
> prevents 'perf --uid non-root-user' to work for 
> 'non-root-user'.

Just wondering what detail causes that failure - the whole point 
of --uid mingo would be to enable nonprivileged users to do 
'session wide' profiling, *especially* if paranoia is high.

So what does --uid do which perf record --pid 1234 wouldnt 
already do? By all means --uid ought to be a fancy way of doing 
a whole bunch of perf record --pid 1234 profiling sessions, at 
once.

[ Btw, we should probably alias --user to --uid as well, as that 
  might be the intuitive thing people would typically use? ]

> 	http://git.kernel.org/?p=linux/kernel/git/acme/linux.git;a=tag;h=ce9600c4c664ce7f97e8aa5e756b0b4ea5b017c7
> looks ok to me, need just to improve on the commit log message, I'll get
> used to it :-)
> 
> - Arnaldo
> 
> The following changes since commit 172d1b0b73256551f100fc00c69e356d047103f5:
> 
>   perf tools: Fix compile error on x86_64 Ubuntu (2012-01-08 13:34:55 -0200)
> 
> are available in the git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux perf-core-for-mingo
> 
> for you to fetch changes up to f8f4b2872295dca88339ec0c403b2217b1197353:
> 
>   perf tools: Fix strlen() bug in perf_event__synthesize_event_type() (2012-01-24 20:31:34 -0200)
> 
> ----------------------------------------------------------------
> perf/core improvements and fixes
> 
> ----------------------------------------------------------------

Anyway, pulled, thanks a lot Arnaldo!

One detail: don't we want some of these fixes cherry-picked into 
perf/urgent as well?

Thanks,

	Ingo
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