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From: Tony Jones <tonyj@suse.de>
To: Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com>
Cc: linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] perf tools: update docs regarding kernel/user space unwinding
Date: Wed, 25 Mar 2020 12:29:44 -0700	[thread overview]
Message-ID: <20200325192944.GI27749@suse.de> (raw)
In-Reply-To: <20200325191757.GG14102@kernel.org>

On Wed, Mar 25, 2020 at 04:17:57PM -0300, Arnaldo Carvalho de Melo wrote:

> > As an aside, for record path, do you know where PERF_SAMPLE_CALLCHAIN
> > is actually set before being passed to kernel space?
> 
> So, I think is somewhere down from perf_evsel__config()... its in:
> 
> 	perf_evsel__set_sample_bit(evsel, CALLCHAIN);

Thanks for the pointer. I was having a hard time finding it, being too specific.

Tony

  reply	other threads:[~2020-03-25 19:29 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-25 16:40 [PATCH] perf tools: update docs regarding kernel/user space unwinding Tony Jones
2020-03-25 19:17 ` Arnaldo Carvalho de Melo
2020-03-25 19:29   ` Tony Jones [this message]
2020-03-26 21:32 ` Paul Clarke
2020-03-27 20:09   ` Tony Jones
2020-03-27 20:17     ` Arnaldo Melo
2020-03-27 20:33       ` Tony Jones
2020-04-04  8:41 ` [tip: perf/urgent] perf callchain: Update " tip-bot2 for Tony Jones

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