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=DKIM_SIGNED,DKIM_VALID, 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 DAB21C43387 for ; Thu, 20 Dec 2018 09:23:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A687C218A6 for ; Thu, 20 Dec 2018 09:23:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1545297814; bh=klNhD7COncAyMc1KRzXzz7VTFlaiVCFrXteP8vMDyaE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=nKtzyzzb1X5E9+mbmQCmJ1uL4xEb5ruu1HJ4YBaPIuv98jzXO95RGZIOMeS9JXNfv W0nKwbCHs4GMqNpmXwRyovyQprqhF3V37jrRaZjzW9ouXmO3N4W9wThwFc/a/e4kJW nTAmC7HIGo/sbpq7epMdHjUUU/iWXbM11LgHtHUI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731607AbeLTJXd (ORCPT ); Thu, 20 Dec 2018 04:23:33 -0500 Received: from mail.kernel.org ([198.145.29.99]:54038 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731596AbeLTJXa (ORCPT ); Thu, 20 Dec 2018 04:23:30 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id ECE8A21841; Thu, 20 Dec 2018 09:23:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1545297809; bh=klNhD7COncAyMc1KRzXzz7VTFlaiVCFrXteP8vMDyaE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=2BNVcAvTHECFsRNki4iLsouk4qbMPhmAEhTTkHAgBm+ThwnUV+KWzby9do/nNYHz4 eCdsWrI+RUTMy02VonEW2wuQ6aDXGPSUHyCW1DoSLJDkhvv2AUBJ5vnMojp1mG4feg BanEBz1Jw1wfFI5sLRC+7B/IOSKYDK+8trk4aA8A= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Waiman Long , Will Deacon , Linus Torvalds , Peter Zijlstra , Thomas Gleixner , boqun.feng@gmail.com, linux-arm-kernel@lists.infradead.org, paulmck@linux.vnet.ibm.com, Ingo Molnar , Sebastian Andrzej Siewior , Sasha Levin Subject: [PATCH 4.9 25/61] locking/qspinlock: Remove duplicate clear_pending() function from PV code Date: Thu, 20 Dec 2018 10:18:25 +0100 Message-Id: <20181220085844.749782306@linuxfoundation.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20181220085843.743900603@linuxfoundation.org> References: <20181220085843.743900603@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ commit 3bea9adc96842b8a7345c7fb202c16ae9c8d5b25 upstream. The native clear_pending() function is identical to the PV version, so the latter can simply be removed. This fixes the build for systems with >= 16K CPUs using the PV lock implementation. Reported-by: Waiman Long Signed-off-by: Will Deacon Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: boqun.feng@gmail.com Cc: linux-arm-kernel@lists.infradead.org Cc: paulmck@linux.vnet.ibm.com Link: http://lkml.kernel.org/r/20180427101619.GB21705@arm.com Signed-off-by: Ingo Molnar Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Sasha Levin --- kernel/locking/qspinlock_paravirt.h | 5 ----- 1 file changed, 5 deletions(-) diff --git a/kernel/locking/qspinlock_paravirt.h b/kernel/locking/qspinlock_paravirt.h index 9c07c72fb10e..af2a24d484aa 100644 --- a/kernel/locking/qspinlock_paravirt.h +++ b/kernel/locking/qspinlock_paravirt.h @@ -105,11 +105,6 @@ static __always_inline void set_pending(struct qspinlock *lock) atomic_or(_Q_PENDING_VAL, &lock->val); } -static __always_inline void clear_pending(struct qspinlock *lock) -{ - atomic_andnot(_Q_PENDING_VAL, &lock->val); -} - static __always_inline int trylock_clear_pending(struct qspinlock *lock) { int val = atomic_read(&lock->val); -- 2.19.1