From patchwork Mon Sep 14 20:42:16 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 11774927 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 51C0F1580 for ; Mon, 14 Sep 2020 20:55:03 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2A5AE217BA for ; Mon, 14 Sep 2020 20:55:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="pjt4ipoH"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="KKlXvjmR" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2A5AE217BA Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linutronix.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E7EB16E5A4; Mon, 14 Sep 2020 20:54:56 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org X-Greylist: delayed 586 seconds by postgrey-1.36 at gabe; Mon, 14 Sep 2020 20:54:55 UTC Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by gabe.freedesktop.org (Postfix) with ESMTPS id BEA596E5A4 for ; Mon, 14 Sep 2020 20:54:55 +0000 (UTC) Message-Id: <20200914204441.686695987@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1600116312; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: references:references; bh=RfxMqlPiepbkielPdHvAzLuC/W7nRAVZVsmDVELAHII=; b=pjt4ipoHz2SR+76u/tosh7gyPxQsg2oL/bqNd6MRCV4oI1z48eqv1u70tHD6lv8me21lrp r0nf9q7gfeNk/g6/mQbWoxxc6sgattZculBG7/CAEhhAosn3HO+ELh/5ZMKS01PZDGGPiV 5UPGaI9uTL9WPM9r49P7uaq5wk95tawOQtkcIzkOz6iSKD5SsqVW8RpHISt5xAmsNGRf/s PwQDlz+dCOVfrDUrCEkzB0vPklJs8f3/2QV6ZG5w6yyAxtpbaqFGEafdnTlhe/mPuQGW/2 aaWaJRqL/bLlqEm3DE9P4rm0Ldlt8ELtOtjbcIXqqOCzZO06YL/N5kw2xvNEHQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1600116312; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: references:references; bh=RfxMqlPiepbkielPdHvAzLuC/W7nRAVZVsmDVELAHII=; b=KKlXvjmRL6XVp/lLKfPN8jJGOYdGr+dBLEzJxa2pQ6HTfXoVmCn9f/zEn0x26bRx145urU PFTkWVcFpRpLnPDg== Date: Mon, 14 Sep 2020 22:42:16 +0200 From: Thomas Gleixner To: LKML References: <20200914204209.256266093@linutronix.de> MIME-Version: 1.0 Subject: [Intel-gfx] [patch 07/13] uaccess: Clenaup PREEMPT_COUNT leftovers X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Juri Lelli , Peter Zijlstra , Sebastian Andrzej Siewior , Lai Jiangshan , dri-devel@lists.freedesktop.org, Ben Segall , linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linux-hexagon@vger.kernel.org, Will Deacon , Ingo Molnar , Anton Ivanov , linux-arch@vger.kernel.org, Brian Cain , Richard Weinberger , Russell King , David Airlie , Ingo Molnar , Geert Uytterhoeven , Mel Gorman , intel-gfx@lists.freedesktop.org, Matt Turner , Valentin Schneider , linux-xtensa@linux-xtensa.org, Shuah Khan , "Paul E. McKenney" , Jeff Dike , linux-um@lists.infradead.org, Josh Triplett , Steven Rostedt , rcu@vger.kernel.org, linux-m68k@lists.linux-m68k.org, Ivan Kokshaysky , Dietmar Eggemann , linux-arm-kernel@lists.infradead.org, Richard Henderson , Chris Zankel , Max Filippov , Linus Torvalds , linux-alpha@vger.kernel.org, Mathieu Desnoyers , Andrew Morton , Daniel Bristot de Oliveira Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" CONFIG_PREEMPT_COUNT is now unconditionally enabled and will be removed. Cleanup the leftovers before doing so. Signed-off-by: Thomas Gleixner --- include/linux/uaccess.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- a/include/linux/uaccess.h +++ b/include/linux/uaccess.h @@ -230,9 +230,9 @@ static inline bool pagefault_disabled(vo * * 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())