From: Peter Zijlstra <peterz@infradead.org>
To: Davidlohr Bueso <dave@stgolabs.net>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
linux-kernel@vger.kernel.org, Ingo Molnar <mingo@redhat.com>,
Darren Hart <darren@dvhart.com>,
Steven Rostedt <rostedt@goodmis.org>,
fredrik.markstrom@windriver.com,
Manfred Spraul <manfred@colorfullife.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>
Subject: Re: [PATCH 2/3 v2] futex: avoid double wake up in futex_wake() on -RT
Date: Thu, 16 Apr 2015 17:54:08 +0200 [thread overview]
Message-ID: <20150416155408.GU27490@worktop.programming.kicks-ass.net> (raw)
In-Reply-To: <1429195375.6795.46.camel@stgolabs.net>
On Thu, Apr 16, 2015 at 07:42:55AM -0700, Davidlohr Bueso wrote:
> On Thu, 2015-04-16 at 12:16 +0200, Peter Zijlstra wrote:
> > But if we decide we want to go do this, I'd propose we reintroduce this
> > delayed wake list thing again.
>
> Given that futexes aren't the only potential users, I definitely agree.
> Lemme cleanup the patches and I'll resend. Now, one thing I wonder about
> is if we should bother making it a delayed list a plist instead -- as
> not all users would consider rt-tasks like futexes do.
plist don't work and should not be used for tasks anymore. I suppose I
should go rip them out of futexes too. If you want to make the thing
priority aware we should probably abstract the rb-tree from rtmutex.c
next prev parent reply other threads:[~2015-04-16 15:54 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-07 15:03 improve futex on -RT by avoiding the double wake-up Sebastian Andrzej Siewior
2015-04-07 15:03 ` [PATCH 1/3] futex: avoid double wake up in PI futex wait / wake on -RT Sebastian Andrzej Siewior
2015-04-07 18:41 ` Thomas Gleixner
2015-04-10 14:42 ` [PATCH 1/3 v2] " Sebastian Andrzej Siewior
2015-04-07 15:03 ` [PATCH 2/3] futex: avoid double wake up in futex_wake() " Sebastian Andrzej Siewior
2015-04-07 19:47 ` Thomas Gleixner
2015-04-10 16:11 ` [PATCH 2/3 v2] " Sebastian Andrzej Siewior
2015-04-13 3:02 ` Davidlohr Bueso
2015-04-16 5:09 ` Davidlohr Bueso
2015-04-16 9:19 ` Thomas Gleixner
2015-04-16 10:16 ` Peter Zijlstra
2015-04-16 10:49 ` Thomas Gleixner
2015-04-16 14:42 ` Davidlohr Bueso
2015-04-16 15:54 ` Peter Zijlstra [this message]
2015-04-16 16:22 ` Davidlohr Bueso
2015-04-07 15:03 ` [PATCH 3/3] ipc/mqueue: remove STATE_PENDING Sebastian Andrzej Siewior
2015-04-07 17:48 ` Manfred Spraul
2015-04-07 18:28 ` Thomas Gleixner
2015-04-10 14:37 ` [PATCH v2] " Sebastian Andrzej Siewior
2015-04-23 22:18 ` Thomas Gleixner
2015-04-28 3:24 ` Davidlohr Bueso
2015-04-28 12:37 ` Peter Zijlstra
2015-04-28 16:36 ` Davidlohr Bueso
2015-04-28 16:43 ` Peter Zijlstra
2015-04-28 16:59 ` Davidlohr Bueso
2015-04-29 19:44 ` Manfred Spraul
2015-04-30 18:46 ` Davidlohr Bueso
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