linux-kernel - Re: [PATCHSET 0/5] perf tools: Speed up dwarf callchain post-unwinding for libunwind (v4)

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Date:	Mon, 13 Oct 2014 20:11:58 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ingo Molnar <mingo@...nel.org>,
	Paul Mackerras <paulus@...ba.org>,
	Namhyung Kim <namhyung.kim@....com>,
	LKML <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>
Subject: Re: [PATCHSET 0/5] perf tools: Speed up dwarf callchain
 post-unwinding for libunwind (v4)

On Mon, Oct 06, 2014 at 09:45:58AM +0900, Namhyung Kim wrote:
> Hello,
> 
> This is v4 for libunwind callchain post processing speed up.  It was
> able to reduce 50% of processing time by using global cache provided
> in libunwind.  In this version, I decided to use the existing
> callchain_param.record_mode instead of adding a new field in the
> symbol_conf.
> 
> The patch 4 and 5 are just cleanups so that we can easily find out
> that which part of code uses the thread->priv.
> 
> You can also get it from 'perf/callchain-unwind-v4' branch on my tree:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/namhyung/linux-perf.git
> 
> Thanks,
> Namhyung
> 
> 
> Namhyung Kim (5):
>   perf report: Set callchain_param.record_mode for future use
>   perf callchain: Create an address space per thread
>   perf callchain: Use global caching provided by libunwind
>   perf kvm: Use thread_{,_set}_priv helpers
>   perf trace: Use thread_{,_set}_priv helpers

Acked-by: Jiri Olsa <jolsa@...nel.org>

thanks,
jirka
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