From: "Ulrich Drepper" <drepper@gmail.com>
To: "Daniel Walker" <dwalker@mvista.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/3] futex: fix miss ordered wakeups
Date: Thu, 22 May 2008 22:02:19 -0700 [thread overview]
Message-ID: <a36005b50805222202v6ea7b50p988eab5524935e1a@mail.gmail.com> (raw)
In-Reply-To: <20080523042923.916202203@mvista.com>
On Thu, May 22, 2008 at 12:00 AM, Daniel Walker <dwalker@mvista.com> wrote:
> This patch corrects this issue, so the tasks are always woken in priority
> order.
This is completely unnecessary overhead for 99.999% of all cases. It
was deliberately not done. You slowing things down for everybody. If
you want priorities, then use PI futexes.
next prev parent reply other threads:[~2008-05-23 5:02 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-22 7:00 [PATCH 1/3] mutex debug: add generic blocked_on usage Daniel Walker
2008-05-22 7:00 ` [PATCH 2/3] rtmutex: " Daniel Walker
2008-05-22 7:00 ` [PATCH 3/3] futex: fix miss ordered wakeups Daniel Walker
2008-05-23 5:02 ` Ulrich Drepper [this message]
2008-05-23 5:15 ` Daniel Walker
2008-05-23 5:24 ` Ulrich Drepper
2008-05-23 5:36 ` Daniel Walker
2008-05-24 3:38 ` Ulrich Drepper
2008-05-24 8:55 ` Thomas Gleixner
2008-05-24 15:32 ` Daniel Walker
2008-05-24 17:03 ` Thomas Gleixner
2008-05-24 17:24 ` Daniel Walker
2008-05-24 18:35 ` Thomas Gleixner
2008-05-24 19:19 ` Daniel Walker
2008-05-24 20:34 ` Arjan van de Ven
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