From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Gleixner Subject: [patch 07/13] uaccess: Clenaup PREEMPT_COUNT leftovers Date: Mon, 14 Sep 2020 22:42:16 +0200 Message-ID: <20200914204441.686695987@linutronix.de> References: <20200914204209.256266093@linutronix.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:Subject:To:From:Date: Message-Id:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:List-Owner; bh=o1E89rV0arbbKZn+PusE1cP8rKvjj7Aml9GzR9cdGI0=; b=fq6ZIQAfFNYMmZRbhL9OfDarI F9Vl6KZOvUt3gEbMbIIfGKzO96jBxifwVaZKUL4DkUv1cyCMiRqN7Al4BauiMuheGZSE6Scj+YKV0 KXBq+LW3LWsHtE21CQk1wZR2/OVAbGq+SmcSP8E76Lby5uw3d1Ul+5/X93ge8kyLyCkNZ6+sBesFF cIcFET4XBFgakcoqpKp6Q3jtPcjdnXrGzpRRfi4rIaKufLXQfXvDaSJIYSgWcZKfCjaW92+p/ZO2K 5aO9+4fJkRkz+GikviCatBqMNGzjQjHM5lcaK7q1tXKLvPlphzY0Lae0oVlEgmk64UC8uTqcE/fUk f1jM3S1iw==; 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== List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane-mx.org@lists.infradead.org To: LKML Cc: Juri Lelli , Peter Zijlstra , Sebastian Andrzej Siewior , Joonas Lahtinen , 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, Vincent Guittot , Brian Cain , Richard Weinberger , Russell King , David Airlie , Ingo Molnar , Geert Uytterhoeven , Mel Gorman , intel-gfx@lists.freedesktop.org, Matt Turner , Valentin 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())