Date: Tue, 4 Oct 2016 18:02:14 -0700
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
Message-ID: <20161005010214.GA32728@linux-80c1.suse>
References: <20161003091234.879763059@infradead.org>
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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.