linux-kernel - Re: [tip:perf/urgent] perf hists: Fix determination of a callchain node's childlessness

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Message-ID: <20160502233424.qjbdpedge3ft2qxh@alap3.anarazel.de>
Date:	Mon, 2 May 2016 16:34:24 -0700
From:	Andres Freund <andres@...razel.de>
To:	Greg KH <greg@...ah.com>
Cc:	stable@...r.kernel.org, tglx@...utronix.de, a.p.zijlstra@...llo.nl,
	namhyung@...nel.org, linux-kernel@...r.kernel.org, hpa@...or.com,
	mingo@...nel.org, acme@...hat.com
Subject: Re: [tip:perf/urgent] perf hists: Fix determination of a callchain
 node's childlessness

Hi,

On 2016-05-02 16:24:08 -0700, Greg KH wrote:
> On Mon, May 02, 2016 at 03:25:25PM -0700, Andres Freund wrote:
> > On 2016-05-02 15:17:54 -0700, Greg KH wrote:
> > Sorry for that, I'd used git describe on the commit to determine which
> > branch it was contained in (outputting v4.3-1188-g4b3a321). That
> > obviously doesn't make sense though, as that just returns the state of
> > the tree at which 4b3a3212233a was introduced, not the commit it was
> > merged into mainline.
> 
> I have an alias in my .gitconfig:
> [alias]
> 	dc = describe --contains
> 
> which is what you need here:
> 	$ git dc 4b3a3212233a
> 	v4.5-rc1~171^2~43^2~3
> 
> hope this helps,

Ah, perfect. Thanks. I made do with git tag --contains, but that's
awfully slow; describe --contains is a lot faster.


Andres