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=-9.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,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 799BBC2BA83 for ; Sun, 9 Feb 2020 22:33:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 403DA20820 for ; Sun, 9 Feb 2020 22:33:37 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="FYsvkDiO" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727122AbgBIWdg (ORCPT ); Sun, 9 Feb 2020 17:33:36 -0500 Received: from mail-wr1-f66.google.com ([209.85.221.66]:44982 "EHLO mail-wr1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726658AbgBIWdg (ORCPT ); Sun, 9 Feb 2020 17:33:36 -0500 Received: by mail-wr1-f66.google.com with SMTP id m16so5183121wrx.11 for ; Sun, 09 Feb 2020 14:33:34 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=nYKj63iZ/uIF9KSGHoTJd2yKyNkc6TYMP/L6qvJ98sU=; b=FYsvkDiOECFe8ZrkDaPll8uPJPOVsL0Qdxve+hSHNhxyIn9yIGE159PaFCa+TR3BOm 2noupIFQ5Z2lhyUVweKoco6gLEQlR4gAjUCqqOy+02iQ61d6EOs79HZOdaV9E7SV+Tfd tZLm1+A/ebvW/Iq4EH8y63+eFEoZIrlQqk/3SCtpmtmop2DmXV0vJJVaILTtusv39TXY UsUcFPIO6Sb5Gyz6HINZLqrc2p/hKbnynPSrYyFsvjaDgGP3B2c54ZIlh+QilChCQtQj xwIDavHOwYlbLuk2YwFFV1jD1qcGzk33zXfE2PMGg2NVDx7ZeavUFn+J7kiTsq8v8PR1 SBUA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=nYKj63iZ/uIF9KSGHoTJd2yKyNkc6TYMP/L6qvJ98sU=; b=IwmNiZV/d9o92oif3a/S3J35Btl4bbmrDrrG7G4K7AIRTty/+7VkO4eQMlrMExHgVa hD43UCqQvoKAni71qFcTy6CVcV1CI8L+abcbfZuXrLmQA6S21AW5xYHEvNPAHJOgt0ZX SwFb5od+ACWjUJNEoSGfZfXI3Sld4dBYmQ6tWlHF7dz5/yJL8E6fJQ7xy+L3PrZVAeKe pQdvKEvNqY6hspZ6djy24ASRbezy2a0NjH1SIGqG6VGyLtqQsCqVJW9In4Qzb2z7gBnf sPsYz7hsO4ocO6XDxfh6sEau3/Z7VhUtNz2Ou2+rovAwf9jDwDL5Hib3maoA5/ZT6RMO A9Aw== X-Gm-Message-State: APjAAAUSr8ltIyGCfbydcc7WwXdaa4rsVLPr1PxAlY1+lCgND6a/j7No xSo3NMPG1V7Hob/Gk4w+1Q== X-Google-Smtp-Source: APXvYqzXRaanc2zdr+B1b9JKSFt5RiU0He5Mvl9EG4hbNb9mNZSmtsazIxtd8yeg2piWO4vrvX+USA== X-Received: by 2002:adf:a389:: with SMTP id l9mr10404278wrb.411.1581287613758; Sun, 09 Feb 2020 14:33:33 -0800 (PST) Received: from ninjahost.lan (host-2-102-13-223.as13285.net. [2.102.13.223]) by smtp.googlemail.com with ESMTPSA id i16sm12956818wrr.71.2020.02.09.14.33.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 09 Feb 2020 14:33:33 -0800 (PST) From: Jules Irenge To: boqun.feng@gmail.com Cc: dvhart@infradead.org, peterz@infradead.org, mingo@redhat.com, acme@kernel.org, mark.rutland@arm.com, alexander.shishkin@linux.intel.com, jolsa@redhat.com, namhyung@kernel.org, linux-kernel@vger.kernel.org, Jules Irenge Subject: [PATCH 04/11] perf/ring_buffer: Add missing annotation to perf_output_end() Date: Sun, 9 Feb 2020 22:33:20 +0000 Message-Id: X-Mailer: git-send-email 2.24.1 In-Reply-To: References: <0/11> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Sparse reports a warning at perf_output_end() warning: context imbalance in perf_output_end() - unexpected unlock The root cause is a missing annotation for perf_output_end() Add the missing __releases(RCU) annotation Signed-off-by: Jules Irenge --- kernel/events/ring_buffer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/events/ring_buffer.c b/kernel/events/ring_buffer.c index 7ffd5c763f93..c09edc49a4fc 100644 --- a/kernel/events/ring_buffer.c +++ b/kernel/events/ring_buffer.c @@ -294,7 +294,7 @@ unsigned int perf_output_skip(struct perf_output_handle *handle, return __output_skip(handle, NULL, len); } -void perf_output_end(struct perf_output_handle *handle) +void perf_output_end(struct perf_output_handle *handle) __releases(RCU) { perf_output_put_handle(handle); rcu_read_unlock(); -- 2.24.1