From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9786DC04EBF for ; Fri, 16 Nov 2018 00:27:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 644562082A for ; Fri, 16 Nov 2018 00:27:34 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 644562082A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=stgolabs.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389203AbeKPKhk (ORCPT ); Fri, 16 Nov 2018 05:37:40 -0500 Received: from smtp2.provo.novell.com ([137.65.250.81]:54000 "EHLO smtp2.provo.novell.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388965AbeKPKhk (ORCPT ); Fri, 16 Nov 2018 05:37:40 -0500 Received: from linux-r8p5.psav.com (prv-ext-foundry1int.gns.novell.com [137.65.251.240]) by smtp2.provo.novell.com with ESMTP (TLS encrypted); Thu, 15 Nov 2018 17:27:21 -0700 From: Davidlohr Bueso To: akpm@linux-foundation.org Cc: dave@stgolabs.net, linux-kernel@vger.kernel.org, peterz@infradead.org, mingo@kernel.org Subject: [PATCH 1/6] locking/mutex: Remove caller signal_pending branch predictions Date: Thu, 15 Nov 2018 16:27:08 -0800 Message-Id: <20181116002713.8474-2-dave@stgolabs.net> X-Mailer: git-send-email 2.16.4 In-Reply-To: <20181116002713.8474-1-dave@stgolabs.net> References: <20181116002713.8474-1-dave@stgolabs.net> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is already done for us internally by the signal machinery. Cc: peterz@infradead.org Cc: mingo@kernel.org Signed-off-by: Davidlohr Bueso --- kernel/locking/mutex.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/locking/mutex.c b/kernel/locking/mutex.c index 3f8a35104285..db578783dd36 100644 --- a/kernel/locking/mutex.c +++ b/kernel/locking/mutex.c @@ -987,7 +987,7 @@ __mutex_lock_common(struct mutex *lock, long state, unsigned int subclass, * wait_lock. This ensures the lock cancellation is ordered * against mutex_unlock() and wake-ups do not go missing. */ - if (unlikely(signal_pending_state(state, current))) { + if (signal_pending_state(state, current)) { ret = -EINTR; goto err; } -- 2.16.4