From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754651AbcJEHl5 (ORCPT ); Wed, 5 Oct 2016 03:41:57 -0400 Received: from Galois.linutronix.de ([146.0.238.70]:38255 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754570AbcJEHl4 (ORCPT ); Wed, 5 Oct 2016 03:41:56 -0400 Date: Wed, 5 Oct 2016 09:41:47 +0200 From: Sebastian Andrzej Siewior To: Peter Zijlstra Cc: mingo@kernel.org, tglx@linutronix.de, juri.lelli@arm.com, rostedt@goodmis.org, xlpang@redhat.com, linux-kernel@vger.kernel.org, mathieu.desnoyers@efficios.com, jdesfossez@efficios.com, bristot@redhat.com Subject: Re: [RFC][PATCH 4/4] futex: Rewrite FUTEX_UNLOCK_PI Message-ID: <20161005074147.qws2fx2n3o56y2r4@linutronix.de> References: <20161003091234.879763059@infradead.org> <20161003091847.704255067@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20161003091847.704255067@infradead.org> User-Agent: NeoMutt/20160916 (1.7.0) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2016-10-03 11:12:38 [+0200], Peter Zijlstra wrote: > There's a number of 'interesting' problems with FUTEX_UNLOCK_PI, all > caused by holding hb->lock while doing the rt_mutex_unlock() > equivalient. are those problems DL related? Sebastian