From: Darren Hart <dvhltc@us.ibm.com>
To: Michel Lespinasse <walken@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>,
Peter Zijlstra <peterz@infradead.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] futex: add FUTEX_SET_WAIT operation
Date: Tue, 17 Nov 2009 16:13:31 -0800 [thread overview]
Message-ID: <4B033C2B.5000504@us.ibm.com> (raw)
In-Reply-To: <20091117074655.GA14023@google.com>
Michel Lespinasse wrote:
> Hi,
>
> I would like to propose adding a new FUTEX_SET_WAIT operation to the futex
> code, as per the following patch against 2.6.32-rc7
If we go ahead with this, I'd like to adapt FUTEX_WAIT_REQUEUE_PI to use
this as well, as it faces all the same races related to the calling task
getting to sleep in the kernel before a wake call (FUTEX_CMP_REQUEUE_PI
in this case) as futex_wait does. FUTEX_SET_WAIT_REQUEUE_PI is
ridiculously long... but it is what it is I guess :-)
--
Darren "not-as-brave-as-peterz (short quote for Linus)" Hart
IBM Linux Technology Center
Real-Time Linux Team
prev parent reply other threads:[~2009-11-18 0:13 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-17 7:46 [PATCH] futex: add FUTEX_SET_WAIT operation Michel Lespinasse
2009-11-17 8:18 ` Ingo Molnar
2009-11-17 8:55 ` Peter Zijlstra
2009-11-17 16:16 ` Darren Hart
2009-11-18 3:37 ` Michel Lespinasse
2009-11-18 5:29 ` Darren Hart
2009-11-24 14:39 ` [PATCH 0/3] perf bench: Add new benchmark for futex subsystem Hitoshi Mitake
2009-11-24 14:39 ` [PATCH 1/3] perf bench: Add wrappers for atomic operation of GCC Hitoshi Mitake
2009-11-24 16:20 ` Darren Hart
2009-11-26 5:44 ` Hitoshi Mitake
2009-11-24 14:39 ` [PATCH 2/3] perf bench: Add new files for futex performance test Hitoshi Mitake
2009-11-24 16:33 ` Darren Hart
2009-11-26 5:53 ` Hitoshi Mitake
2009-11-26 5:56 ` [PATCH] futextest: Make locktest() in harness.h more general Hitoshi Mitake
2009-11-24 14:39 ` [PATCH 3/3] perf bench: Fix misc files to build files related to futex Hitoshi Mitake
2009-11-18 22:13 ` [PATCH] futex: add FUTEX_SET_WAIT operation Michel Lespinasse
2009-11-19 6:51 ` Darren Hart
2009-11-19 17:03 ` Darren Hart
[not found] ` <8d20b11a0911191325u49624854u6132594f13b0718c@mail.gmail.com>
2009-11-19 23:13 ` Darren Hart
2009-11-21 2:36 ` Michel Lespinasse
2009-11-23 17:21 ` Darren Hart
2009-11-17 17:24 ` Ingo Molnar
2009-11-17 17:27 ` Darren Hart
2009-11-18 1:49 ` Hitoshi Mitake
2009-11-17 8:50 ` Peter Zijlstra
2009-11-17 15:24 ` Linus Torvalds
2009-11-18 4:21 ` Michel Lespinasse
2009-11-18 5:40 ` Darren Hart
2009-11-30 22:09 ` Darren Hart
2009-12-03 6:55 ` [PATCH] futex: add FUTEX_SET_WAIT operation (and ADAPTIVE) Darren Hart
2009-11-17 17:22 ` [PATCH] futex: add FUTEX_SET_WAIT operation Darren Hart
2009-11-18 3:29 ` Michel Lespinasse
2009-11-18 0:13 ` Darren Hart [this message]
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