linux-kernel - [PATCH 0/3] ipc/sem.c: multiple fixes

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Message-Id: <1316885806-11934-1-git-send-email-manfred@colorfullife.com>
Date:	Sat, 24 Sep 2011 19:36:46 +0200
From:	Manfred Spraul <manfred@...orfullife.com>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Mike Galbraith <efault@....de>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Manfred Spraul <manfred@...orfullife.com>
Subject: [PATCH 0/3] ipc/sem.c: multiple fixes

Hi,

The wakeup scheme used by semtimedop() does not work as intended on -rt.
The following series:
- fixes one bug that I noticed while thinking about a -rt compatible
  implementation
- prevents the code from returning to user space due to spurious wakeups.
  (noticed by Peter Zijlstra)
- contains a proposal how to support -rt.

Especially the last patch is for discussion - I don't like the overhead
introduced by using a completion.

What do you think?

--
	Manfred
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