From: Arjan van de Ven <arjan@linux.intel.com>
To: mingo@redhat.com, hpa@zytor.com, dvhltc@us.ibm.com,
linux-kernel@vger.kernel.org, rusty@rustcorp.com.au,
arjan@linux.intel.com, peterz@infradead.org, tglx@linutronix.de,
mingo@elte.hu
Cc: linux-tip-commits@vger.kernel.org
Subject: Re: [tip:core/futexes] futex: use current->time_slack_ns for rt tasks too
Date: Thu, 12 Mar 2009 06:53:32 -0700 [thread overview]
Message-ID: <49B913DC.6040807@linux.intel.com> (raw)
In-Reply-To: <tip-16f4993f4e9860715918efd4eeac928f8de1218b@git.kernel.org>
Darren Hart wrote:
> Commit-ID: 16f4993f4e9860715918efd4eeac928f8de1218b
> Gitweb: http://git.kernel.org/tip/16f4993f4e9860715918efd4eeac928f8de1218b
> Author: "Darren Hart" <dvhltc@us.ibm.com>
> AuthorDate: Thu, 12 Mar 2009 00:55:59 -0700
> Commit: Ingo Molnar <mingo@elte.hu>
> CommitDate: Thu, 12 Mar 2009 11:20:57 +0100
>
> futex: use current->time_slack_ns for rt tasks too
>
> RT tasks should set their timer slack to 0 on their own. This
> patch removes the 'if (rt_task()) slack = 0;' block in
> futex_wait.
Hi,
can you explain the rationale for this reasoning?
next prev parent reply other threads:[~2009-03-12 13:53 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-12 7:55 [PATCH 0/6] Futex fixes and cleanups Darren Hart
2009-03-12 7:55 ` [PATCH 1/6] Update futex commentary Darren Hart
2009-03-12 10:24 ` [tip:core/futexes] futex: update " Darren Hart
2009-03-12 7:55 ` [PATCH 2/6] Additional (get|put)_futex_key() fixes Darren Hart
2009-03-12 10:16 ` Ingo Molnar
2009-03-12 13:42 ` Thomas Gleixner
2009-03-12 23:22 ` Darren Hart
2009-03-12 10:24 ` [tip:core/futexes] futex: additional " Darren Hart
2009-03-13 0:20 ` Ingo Molnar
2009-03-13 5:46 ` Darren Hart
2009-03-13 0:24 ` [tip:core/urgent] " Darren Hart
2009-03-12 7:55 ` [PATCH 3/6] futex: add double_unlock_hb() Darren Hart
2009-03-12 10:07 ` Peter Zijlstra
2009-03-12 10:10 ` Ingo Molnar
2009-03-12 10:58 ` Thomas Gleixner
2009-03-12 15:13 ` Darren Hart
2009-03-12 10:24 ` [tip:core/futexes] " Darren Hart
2009-03-12 7:55 ` [PATCH 4/6] futex: Use current->time_slack_ns for rt tasks too Darren Hart
2009-03-12 10:11 ` Peter Zijlstra
2009-03-12 10:24 ` [tip:core/futexes] futex: use " Darren Hart
2009-03-12 13:53 ` Arjan van de Ven [this message]
2009-03-12 14:02 ` Peter Zijlstra
2009-03-12 14:25 ` Thomas Gleixner
2009-03-12 14:48 ` Peter Zijlstra
2009-03-12 15:01 ` Arjan van de Ven
2009-03-12 21:33 ` Darren Hart
2009-03-12 21:43 ` Thomas Gleixner
2009-03-12 21:29 ` Darren Hart
2009-03-12 7:56 ` [PATCH 5/6] futex: unlock before returning -EFAULT Darren Hart
2009-03-12 10:13 ` Peter Zijlstra
2009-03-12 10:47 ` Thomas Gleixner
2009-03-12 11:06 ` Peter Zijlstra
2009-03-12 15:15 ` Darren Hart
2009-03-12 22:17 ` Darren Hart
2009-03-12 10:24 ` [tip:core/futexes] " Darren Hart
2009-03-13 0:24 ` [tip:core/urgent] " Darren Hart
2009-03-12 7:56 ` [PATCH 6/6] futex: cleanup fault logic Darren Hart
2009-03-12 10:15 ` Peter Zijlstra
2009-03-12 15:09 ` Darren Hart
2009-03-12 10:25 ` [tip:core/futexes] futex: clean up " Darren Hart
2009-03-12 12:22 ` [PATCH 0/6] Futex fixes and cleanups Ingo Molnar
2009-03-12 15:21 ` Darren Hart
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