From patchwork Thu Apr 17 08:41:50 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vladimir Murzin X-Patchwork-Id: 4006101 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 90203BFF02 for ; Thu, 17 Apr 2014 07:45:13 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B7DCF20373 for ; Thu, 17 Apr 2014 07:45:12 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id BD101201F9 for ; Thu, 17 Apr 2014 07:45:11 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Wagxx-0007DJ-Uf; Thu, 17 Apr 2014 07:42:37 +0000 Received: from mail-wg0-x22f.google.com ([2a00:1450:400c:c00::22f]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1Wagxv-00078H-HK for linux-arm-kernel@lists.infradead.org; Thu, 17 Apr 2014 07:42:36 +0000 Received: by mail-wg0-f47.google.com with SMTP id x12so79648wgg.18 for ; Thu, 17 Apr 2014 00:42:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=ti9MjjjQL0pk3rGsU37kGFeJ9FWgFxx7E6xIcbL4AKY=; b=ruHD0vTTcf9chnggrWgaQAElVyY44ZuwoFknB8IvrkgatwzNzacHKT02h/K/Ofp9Xn NBvhggT4otmr6+TYGO+zn+t4Smv98iUhhB8d+7OER4/iBAdpYl45AGGHL5/hWU/cBk0q UYkATN0a2zYNISGZe/uZLGheoBxRs6g4YxVDTh7J21xv2sb53gu89InatcW6Vu8Xp+1g l//i5YwMXOqTAHukdXnE9INH5BfZtH5AgoVVYTI5hBbmvvR2kKCoq6V9ypT0r1RIYs+T 1k51dX4tELFTDIh56i64x1Ty7ACA3M8uo1zZdx7msD1BJDYa3OR3T1d5b71cGqWu5xNo osqQ== X-Received: by 10.194.110.100 with SMTP id hz4mr782044wjb.50.1397720533510; Thu, 17 Apr 2014 00:42:13 -0700 (PDT) Received: from localhost.localdomain (cpc4-cmbg17-2-0-cust445.5-4.cable.virginm.net. [86.14.225.190]) by mx.google.com with ESMTPSA id f7sm17386311wjy.24.2014.04.17.00.42.12 for (version=TLSv1.2 cipher=AES128-GCM-SHA256 bits=128/128); Thu, 17 Apr 2014 00:42:12 -0700 (PDT) From: Vladimir Murzin To: xen-devel@lists.xenproject.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH] xen: use sync_clear_bit instead of clear_bit Date: Thu, 17 Apr 2014 09:41:50 +0100 Message-Id: <1397724110-31851-1-git-send-email-murzin.v@gmail.com> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1397723881-31648-1-git-send-email-murzin.v@gmail.com> References: <1397723881-31648-1-git-send-email-murzin.v@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140417_004235_721754_F0FB276A X-CRM114-Status: UNSURE ( 9.64 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -0.1 (/) Cc: Ian.Campbell@citrix.com, konrad.wilk@oracle.com, catalin.marinas@arm.com, Vladimir Murzin , will.deacon@arm.com, david.vrabel@citrix.com, JBeulich@suse.com, boris.ostrovsky@oracle.com X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-2.4 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RP_MATCHES_RCVD, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: Vladimir Murzin --- For those who whant to play with original issue [1] [1] http://www.gossamer-threads.com/lists/xen/devel/325613 drivers/xen/events/events_fifo.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/xen/events/events_fifo.c b/drivers/xen/events/events_fifo.c index 96109a9..91248d8 100644 --- a/drivers/xen/events/events_fifo.c +++ b/drivers/xen/events/events_fifo.c @@ -273,7 +273,7 @@ static void consume_one_event(unsigned cpu, * copy of the ready word. */ if (head == 0) - clear_bit(priority, BM(ready)); + sync_clear_bit(priority, BM(ready)); if (sync_test_bit(EVTCHN_FIFO_PENDING, BM(word)) && !sync_test_bit(EVTCHN_FIFO_MASKED, BM(word)))