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Date:	Mon, 13 Oct 2014 20:11:58 +0200
From:	Jiri Olsa <>
To:	Namhyung Kim <>
Cc:	Arnaldo Carvalho de Melo <>,
	Peter Zijlstra <>,
	Ingo Molnar <>,
	Paul Mackerras <>,
	Namhyung Kim <>,
	LKML <>,
	David Ahern <>,
	Frederic Weisbecker <>
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://
> 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 <>

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