From: Andrew Morton <akpm@linux-foundation.org>
To: Manfred Spraul <manfred@colorfullife.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Mike Galbraith <efault@gmx.de>,
Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: [PATCH 2/3] ipc/sem.c: handle spurious wakeups
Date: Tue, 11 Oct 2011 14:54:41 -0700 [thread overview]
Message-ID: <20111011145441.228e4c94.akpm@linux-foundation.org> (raw)
In-Reply-To: <1316885831-11996-1-git-send-email-manfred@colorfullife.com>
On Sat, 24 Sep 2011 19:37:11 +0200
Manfred Spraul <manfred@colorfullife.com> wrote:
> semtimedop() does not handle spurious wakeups, it returns -EINTR to user space.
> Most other schedule() users would just loop and not return to user space.
> The patch adds such a loop to semtimedop()
What is a "spurious wakeup" and how can a process receive one?
I'm wondering about the userspace-visible effects of this change, and
any compatibility issues?
next prev parent reply other threads:[~2011-10-11 21:54 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-24 17:37 [PATCH 2/3] ipc/sem.c: handle spurious wakeups Manfred Spraul
2011-10-11 21:54 ` Andrew Morton [this message]
2011-10-12 7:09 ` Peter Zijlstra
2011-10-13 18:51 ` Manfred Spraul
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