From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932707AbaJaLVs (ORCPT ); Fri, 31 Oct 2014 07:21:48 -0400 Received: from bombadil.infradead.org ([198.137.202.9]:60042 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758900AbaJaLVo (ORCPT ); Fri, 31 Oct 2014 07:21:44 -0400 Message-Id: <20141031111549.857381983@infradead.org> User-Agent: quilt/0.61-1 Date: Fri, 31 Oct 2014 12:10:44 +0100 From: Peter Zijlstra To: mingo@kernel.org, linux-kernel@vger.kernel.org Cc: peter@hurleysoftware.com, oleg@redhat.com, rjw@rjwysocki.net, torvalds@linux-foundation.org, tglx@linutronix.de, eparis@redhat.com, umgwanakikbuti@gmail.com, marcel@holtmann.org, ebiederm@xmission.com, davem@davemloft.net, fengguang.wu@intel.com, Peter Zijlstra Subject: [PATCH 7/7] sched: Use WARN_ONCE for the might_sleep() TASK_RUNNING test References: <20141031111037.936236584@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline; filename=peterz-wait-warn.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In some cases this can trigger a true flood of output. Requested-by: Ingo Molnar Signed-off-by: Peter Zijlstra (Intel) --- kernel/sched/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -7301,7 +7301,7 @@ void __might_sleep(const char *file, int * since we will exit with TASK_RUNNING make sure we enter with it, * otherwise we will destroy state. */ - if (WARN(current->state != TASK_RUNNING, + if (WARN_ONCE(current->state != TASK_RUNNING, "do not call blocking ops when !TASK_RUNNING; " "state=%lx set at [<%p>] %pS\n", current->state,