From: Davidlohr Bueso <dave@stgolabs.net>
To: Peter Zijlstra <peterz@infradead.org>
Cc: mingo@kernel.org, tglx@linutronix.de, juri.lelli@arm.com,
rostedt@goodmis.org, xlpang@redhat.com, bigeasy@linutronix.de,
linux-kernel@vger.kernel.org, mathieu.desnoyers@efficios.com,
jdesfossez@efficios.com, bristot@redhat.com
Subject: Re: [RFC][PATCH 0/4] FUTEX_UNLOCK_PI wobbles
Date: Tue, 4 Oct 2016 18:02:14 -0700 [thread overview]
Message-ID: <20161005010214.GA32728@linux-80c1.suse> (raw)
In-Reply-To: <20161003091234.879763059@infradead.org>
On Mon, 03 Oct 2016, Peter Zijlstra wrote:
>
>Hi,
>
>During my last PI failing patch set it became obvious there's a number of
>related fail in FUTEX_UNLOCK_PI that needed sorting before we can move on
>with that stuff.
>
>These here patches are the result of staring at that code for a wee bit.
>
>Please have a very _very_ careful look at the last patch, it appears to not
>explode when running:
>
> - perf bench futex lock-pi
> - selftests/futex
>
>but given the immense amount of tricky involved with both PI and futex there is
>bound to be something I've overlooked.
>
>Do people have more/better futex-pi test cases?
pi_stress.
next prev parent reply other threads:[~2016-10-05 1:02 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-03 9:12 [RFC][PATCH 0/4] FUTEX_UNLOCK_PI wobbles Peter Zijlstra
2016-10-03 9:12 ` [RFC][PATCH 1/4] futex: Cleanup variable names for futex_top_waiter() Peter Zijlstra
2016-10-03 14:15 ` Steven Rostedt
2016-10-05 3:58 ` Davidlohr Bueso
2016-10-03 9:12 ` [RFC][PATCH 2/4] futex: Use smp_store_release() in mark_wake_futex() Peter Zijlstra
2016-10-03 14:19 ` Steven Rostedt
2016-10-05 3:57 ` Davidlohr Bueso
2016-10-05 6:20 ` Peter Zijlstra
2016-10-03 9:12 ` [RFC][PATCH 3/4] futex: Remove rt_mutex_deadlock_account_*() Peter Zijlstra
2016-10-03 9:34 ` Peter Zijlstra
2016-10-03 14:25 ` Steven Rostedt
2016-10-05 1:08 ` Davidlohr Bueso
2016-10-05 7:29 ` Sebastian Andrzej Siewior
2016-10-03 9:12 ` [RFC][PATCH 4/4] futex: Rewrite FUTEX_UNLOCK_PI Peter Zijlstra
2016-10-03 15:36 ` Steven Rostedt
2016-10-03 15:44 ` Peter Zijlstra
2016-10-03 15:45 ` Peter Zijlstra
2016-10-03 16:23 ` Steven Rostedt
2016-10-05 7:41 ` Sebastian Andrzej Siewior
2016-10-05 8:09 ` Peter Zijlstra
2016-10-05 8:21 ` Sebastian Andrzej Siewior
2016-10-05 8:32 ` Peter Zijlstra
2016-10-06 10:29 ` Peter Zijlstra
2016-10-07 11:21 ` Peter Zijlstra
2016-10-08 15:53 ` Thomas Gleixner
2016-10-08 16:55 ` Peter Zijlstra
2016-10-08 17:06 ` Thomas Gleixner
2016-10-10 10:17 ` Thomas Gleixner
2016-10-10 11:40 ` Peter Zijlstra
2016-10-21 12:27 ` Peter Zijlstra
2016-10-27 20:36 ` Thomas Gleixner
2016-11-23 19:20 ` Peter Zijlstra
2016-11-24 16:52 ` Peter Zijlstra
2016-11-24 17:56 ` Thomas Gleixner
2016-11-24 18:58 ` Peter Zijlstra
2016-11-25 9:23 ` Peter Zijlstra
2016-11-25 10:03 ` Peter Zijlstra
2016-11-25 19:13 ` Thomas Gleixner
2016-11-25 14:09 ` Peter Zijlstra
2016-10-08 18:22 ` Thomas Gleixner
2016-10-09 11:17 ` Thomas Gleixner
2016-10-10 14:06 ` Peter Zijlstra
2016-10-05 1:02 ` Davidlohr Bueso [this message]
2016-10-05 6:20 ` [RFC][PATCH 0/4] FUTEX_UNLOCK_PI wobbles Peter Zijlstra
2016-10-05 7:26 ` Sebastian Andrzej Siewior
2016-10-05 16:04 ` Davidlohr Bueso
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