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From: Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com>
To: Jiri Olsa <jolsa@kernel.org>
Cc: lkml <linux-kernel@vger.kernel.org>,
	Ingo Molnar <mingo@kernel.org>,
	Namhyung Kim <namhyung@kernel.org>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: [PATCH] perf tools: Speed up report for perf compiled with linwunwind
Date: Thu, 2 May 2019 09:13:10 -0400	[thread overview]
Message-ID: <20190502131310.GG21436@kernel.org> (raw)
In-Reply-To: <20190426073804.17238-1-jolsa@kernel.org>

Em Fri, Apr 26, 2019 at 09:38:04AM +0200, Jiri Olsa escreveu:
> When compiled with libunwind, perf does some preparatory work
> when processing side-band events. This is not needed when report
> actually don't unwind dwarf callchains, so it's disabled with
> dwarf_callchain_users bool.
> 
> However we could move that check to higher level and shield more
> unwanted code for normal report processing, giving us following
> speed up on kernel build profile:

Thanks, applied to perf/core.

- Arnaldo

  reply	other threads:[~2019-05-02 13:13 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-26  7:38 [PATCH] perf tools: Speed up report for perf compiled with linwunwind Jiri Olsa
2019-05-02 13:13 ` Arnaldo Carvalho de Melo [this message]
2019-05-18  8:49 ` [tip:perf/core] " tip-bot for Jiri Olsa

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