linux-kernel - Re: Unnecessary overhead with stack protector.

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Message-ID: <20091026125615.6dcc1e0e@katamari.usersys.redhat.com>
Date:	Mon, 26 Oct 2009 12:56:15 -0400
From:	Chuck Ebbert <cebbert@...hat.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Dave Jones <davej@...hat.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>, esandeen@...hat.com
Subject: Re: Unnecessary overhead with stack protector.

On Mon, 26 Oct 2009 09:37:06 -0700
Andrew Morton <akpm@...ux-foundation.org> wrote:

> > > This looks like a fairly serious problem to me, but I'm confused by the
> > > commit ID.  February 2008 - is this correct?
> > > 
> > 
> > That date is pure fiction AFAICT. And the Mercurial kernel repo says May 2008...
> > Is there some way to get the date a change was merged into the official tree as
> > opposed to the date it was created in some other tree?
> 
> oh, so someone _did_ read my email!
> 
> 
> git show --pretty=fuller 113c5413cf9051cc50b88befdc42e3402bb92115
> 
> commit 113c5413cf9051cc50b88befdc42e3402bb92115
> Author:     Ingo Molnar <mingo@...e.hu>
> AuthorDate: Thu Feb 14 10:36:03 2008 +0100
> Commit:     Thomas Gleixner <tglx@...utronix.de>
> CommitDate: Mon May 26 16:15:32 2008 +0200
> 
> I think the CommitDate is when it hit mainline.

The X-Git-Tag from the web page says it first appeared in mainline in
2.6.30-rc1:

From: Ingo Molnar <mingo@...e.hu>
Date: Thu, 14 Feb 2008 09:36:03 +0000 (+0100)
Subject: x86: unify stackprotector features
X-Git-Tag: v2.6.30-rc1~2^2~50^2~67^2~11
X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=113c5413c

Looks like it went through three merges on the way there?
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