linux-kernel - Re: [GIT PULL] perf updates/fixes

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Date:	Fri, 12 Oct 2012 11:08:11 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Markus Trippelsdorf <markus@...ppelsdorf.de>
Subject: Re: [GIT PULL] perf updates/fixes

On Fri, Oct 12, 2012 at 10:39:26AM +0200, Ingo Molnar wrote:
> 
> * Ingo Molnar <mingo@...nel.org> wrote:
> 
> > Linus,
> > 
> > Please pull the latest perf-urgent-for-linus git tree from:
> > 
> >    git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git perf-urgent-for-linus
> > 
> >    HEAD: 95cf59ea72331d0093010543b8951bb43f262cac perf: Fix perf_cgroup_switch for sw-events
> 
> Note that if you merge it then there's a new semantic conflict 
> with recent rbtree.c changes in your tree, causing a tools/perf/ 
> build failure:
> 
> ../../lib/rbtree.c:24:36: fatal error: linux/rbtree_augmented.h: No such file or directory compilation terminated.
> 
> See the fix below.
> 
> ( If the __maybe_unused annotations are too ugly for 
>   lib/rbtree.c then we'll fix that in tools/perf in a cleaner
>   way, weakening the compiler checks for the rbtree build. We 
>   are using stronger compiler checks in tools/perf/, which has 
>   served us very well so far and is a big net win - the price is 
>   the occasional extra annotation of dummy inline function 
>   parameters. )

Btw,

Markus fixed it that way recently:

http://marc.info/?l=linux-kernel&m=134980573527738

by adding the -Wno-unused-parameter switch only to lib/rbtree.o when
built from within perf.

I see now though that his patch has some unrelated changes to
trace-event-perl.c's permissions which shouldn't be there.

-- 
Regards/Gruss,
Boris.
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