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=-13.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,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 80EBCC2D0A8 for ; Mon, 28 Sep 2020 23:31:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 259CD2076A for ; Mon, 28 Sep 2020 23:31:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1601335910; bh=fkNNUvYgKzjsGWy+k183GC6Ic/RauTWroHJP3SB9FMU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=OAHKgvqodqZ/zzasa0NK+0KRMVHUtCCF59VKuoHkKGPFcdnvoYad3vXBVL75gU01n +gFVqPgFOiTl/R0NTFkeA85Eg/3NhR4qC0Cz/zlRAbIejgN61R51XFktKoHF1IhWYk lBtbDlcMMwDVGcURGbyuCwkkwDcKHfZePDDOr0JY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727380AbgI1Xbt (ORCPT ); Mon, 28 Sep 2020 19:31:49 -0400 Received: from mail.kernel.org ([198.145.29.99]:54416 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727217AbgI1XbG (ORCPT ); Mon, 28 Sep 2020 19:31:06 -0400 Received: from paulmck-ThinkPad-P72.home (unknown [50.45.173.55]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id CBD8D22207; Mon, 28 Sep 2020 23:31:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1601335865; bh=fkNNUvYgKzjsGWy+k183GC6Ic/RauTWroHJP3SB9FMU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NZrETDKN9cjLPUpqfcBm6C+OCQgHH6Wy2jIBL+PvB3Qi5aH2tWBj4YV7lD83FEelB ux+UxTSXXrI70YaideL95Zvz54uqVEKX22jsVWgr2hZBqVQqQb0gdT5ZrENcIMapPe Ly1bAggQa/UUh9rpEIIWOrHkXb59JJEKmnXbukWI= From: paulmck@kernel.org To: rcu@vger.kernel.org Cc: linux-kernel@vger.kernel.org, kernel-team@fb.com, mingo@kernel.org, jiangshanlai@gmail.com, akpm@linux-foundation.org, mathieu.desnoyers@efficios.com, josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com, fweisbec@gmail.com, oleg@redhat.com, joel@joelfernandes.org, mhocko@kernel.org, mgorman@techsingularity.net, torvalds@linux-foundation.org, "Paul E . McKenney" Subject: [PATCH tip/core/rcu 07/15] uaccess: Cleanup PREEMPT_COUNT leftovers Date: Mon, 28 Sep 2020 16:30:54 -0700 Message-Id: <20200928233102.24265-7-paulmck@kernel.org> X-Mailer: git-send-email 2.9.5 In-Reply-To: <20200928233041.GA23230@paulmck-ThinkPad-P72> References: <20200928233041.GA23230@paulmck-ThinkPad-P72> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Thomas Gleixner CONFIG_PREEMPT_COUNT is now unconditionally enabled and will be removed. Cleanup the leftovers before doing so. Signed-off-by: Thomas Gleixner Signed-off-by: Paul E. McKenney --- include/linux/uaccess.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/include/linux/uaccess.h b/include/linux/uaccess.h index 94b2854..b79a5a9 100644 --- a/include/linux/uaccess.h +++ b/include/linux/uaccess.h @@ -230,9 +230,9 @@ static inline bool pagefault_disabled(void) * * This function should only be used by the fault handlers. Other users should * stick to pagefault_disabled(). - * Please NEVER use preempt_disable() to disable the fault handler. With - * !CONFIG_PREEMPT_COUNT, this is like a NOP. So the handler won't be disabled. - * in_atomic() will report different values based on !CONFIG_PREEMPT_COUNT. + * + * Please NEVER use preempt_disable() or local_irq_disable() to disable the + * fault handler. */ #define faulthandler_disabled() (pagefault_disabled() || in_atomic()) -- 2.9.5