From patchwork Wed Aug 11 20:14:32 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Valentin Schneider X-Patchwork-Id: 495515 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 BA9D7C43214 for ; Wed, 11 Aug 2021 20:14:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A0E9D6109F for ; Wed, 11 Aug 2021 20:14:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232178AbhHKUPK (ORCPT ); Wed, 11 Aug 2021 16:15:10 -0400 Received: from foss.arm.com ([217.140.110.172]:57884 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232168AbhHKUPJ (ORCPT ); Wed, 11 Aug 2021 16:15:09 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 3FF461042; Wed, 11 Aug 2021 13:14:45 -0700 (PDT) Received: from e113632-lin.cambridge.arm.com (e113632-lin.cambridge.arm.com [10.1.194.46]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id E4A5E3F40C; Wed, 11 Aug 2021 13:14:43 -0700 (PDT) From: Valentin Schneider To: linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org, linux-pm@vger.kernel.org Cc: Sebastian Andrzej Siewior , Thomas Gleixner , Peter Zijlstra , Daniel Bristot de Oliveira , Ingo Molnar , "Rafael J. Wysocki" Subject: [PATCH v3 2/2] notifier: Remove atomic_notifier_call_chain_robust() Date: Wed, 11 Aug 2021 21:14:32 +0100 Message-Id: <20210811201432.1976916-3-valentin.schneider@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210811201432.1976916-1-valentin.schneider@arm.com> References: <20210811201432.1976916-1-valentin.schneider@arm.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-rt-users@vger.kernel.org This now has no more users, remove it. Suggested-by: Sebastian Andrzej Siewior Signed-off-by: Valentin Schneider --- include/linux/notifier.h | 2 -- kernel/notifier.c | 19 ------------------- 2 files changed, 21 deletions(-) diff --git a/include/linux/notifier.h b/include/linux/notifier.h index 2fb373a5c1ed..87069b8459af 100644 --- a/include/linux/notifier.h +++ b/include/linux/notifier.h @@ -168,8 +168,6 @@ extern int raw_notifier_call_chain(struct raw_notifier_head *nh, extern int srcu_notifier_call_chain(struct srcu_notifier_head *nh, unsigned long val, void *v); -extern int atomic_notifier_call_chain_robust(struct atomic_notifier_head *nh, - unsigned long val_up, unsigned long val_down, void *v); extern int blocking_notifier_call_chain_robust(struct blocking_notifier_head *nh, unsigned long val_up, unsigned long val_down, void *v); extern int raw_notifier_call_chain_robust(struct raw_notifier_head *nh, diff --git a/kernel/notifier.c b/kernel/notifier.c index 1b019cbca594..b8251dc0bc0f 100644 --- a/kernel/notifier.c +++ b/kernel/notifier.c @@ -172,25 +172,6 @@ int atomic_notifier_chain_unregister(struct atomic_notifier_head *nh, } EXPORT_SYMBOL_GPL(atomic_notifier_chain_unregister); -int atomic_notifier_call_chain_robust(struct atomic_notifier_head *nh, - unsigned long val_up, unsigned long val_down, void *v) -{ - unsigned long flags; - int ret; - - /* - * Musn't use RCU; because then the notifier list can - * change between the up and down traversal. - */ - spin_lock_irqsave(&nh->lock, flags); - ret = notifier_call_chain_robust(&nh->head, val_up, val_down, v); - spin_unlock_irqrestore(&nh->lock, flags); - - return ret; -} -EXPORT_SYMBOL_GPL(atomic_notifier_call_chain_robust); -NOKPROBE_SYMBOL(atomic_notifier_call_chain_robust); - /** * atomic_notifier_call_chain - Call functions in an atomic notifier chain * @nh: Pointer to head of the atomic notifier chain