linux-kernel - Re: [PATCH 2.6.27-rc5 incremental re-resubmit] Fix itimer/many thread hang.

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Message-ID: <20080927180801.GC1108@elte.hu>
Date:	Sat, 27 Sep 2008 20:08:01 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Frank Mayhar <fmayhar@...gle.com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>,
	Roland McGrath <roland@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Alexey Dobriyan <adobriyan@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Oleg Nesterov <oleg@...sign.ru>
Subject: Re: [PATCH 2.6.27-rc5 incremental re-resubmit] Fix itimer/many
	thread hang.


* Frank Mayhar <fmayhar@...gle.com> wrote:

> A couple of days ago I re-resubmitted the itimer/many thread hang. 
> Unfortunately, I had too many things going on at once and screwed it 
> up, not verifying the UP version and entirely missing a set of 
> cleanups that I had intended to include.  This rectifies that screwup.
> 
> At Ingo's request, this is an incremental patch, relative to the code 
> in his -tip tree.
> 
> These changes have been minimally tested on both UP and SMP 
> environments.  They simplify the UP code, consolidating pretty much 
> all of it with the SMP version and depending on lower-level SMP/UP 
> handling to take care of the differences.  It also cleans up some UP 
> compile errors, moves the scheduler stats-related macros into 
> kernel/sched_stats.h, cleans up a merge error in kernel/fork.c and has 
> a few other minor fixes and cleanups as suggested by Oleg and Ingo. 
> Again, thanks for the reviews, guys.

applied to tip/timers/posixtimers, thanks Frank!

the additional simplifications in v2->v3:

   3 files changed, 38 insertions(+), 90 deletions(-)

look really good. If you dont hear from me it means -tip testing goes 
fine and the patches are queued up for v2.6.28.

	Ingo
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