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 DA90FC33CB1 for ; Wed, 15 Jan 2020 12:42:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AC22D22522 for ; Wed, 15 Jan 2020 12:42:10 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="auOyDPgV" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729064AbgAOMmJ (ORCPT ); Wed, 15 Jan 2020 07:42:09 -0500 Received: from mail-pl1-f195.google.com ([209.85.214.195]:39977 "EHLO mail-pl1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726483AbgAOMmJ (ORCPT ); Wed, 15 Jan 2020 07:42:09 -0500 Received: by mail-pl1-f195.google.com with SMTP id s21so6806395plr.7; Wed, 15 Jan 2020 04:42:09 -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; bh=S3wXxo3Bh9oayGWM8jZCD/Gnpt0hNiPJrwn1QYGnm2M=; b=auOyDPgVe8RTFRbA5W4EWOXH32dZQVkLy+zdkE2NamNJ/gwg8H60PNu7Lv559iQMy8 +Uf1+gYH+3O1bRayk3SvFe+zasRl5E+RgFunTFI3s7zr7bU7UuUa1QBxGBGG0LzjsDze bQi12uwfRkAMQ5ouovUAbj1CdKvwlrV11g8viM4XpvGwjw2uUTQyDBK5JpP66aykCgEz vY4fGSxWClC5AyfgITKjn2lhV5F/HnF4oPzRneGRvIa3bOxw9iqRyEE2i+Uo3Kw/jc2L Y+091uGOMmax/zqpjYMMcGDh7guRcl1dBh8eCVyHEDYj1tDqyt/XpXF5PcMLIDmaHqeV 6Ijg== 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; bh=S3wXxo3Bh9oayGWM8jZCD/Gnpt0hNiPJrwn1QYGnm2M=; b=eKYFOa5Difh9Yh9R3Y+jSTyOD29VUmaVGTMQ4zKH0AabHevzPixaWMNLHOmFl2wzZu /x/Chy8EiaZkkoYHEgXKJ8iVWF4bSIiZe4u/KWyHPN+goMXnq+OHAG8pZF38rfCQFjrb o48VmKalx83eO1E022+2Rih2HLlhkM3z7s0AfFP9Y3z49O/v34kPCVlY1O4WNMvdTK5r GUI35HeH6DY31cP1GYNG3jDAt+nEPhzwIhbN5nnE3qdzYwR5xGAFO1NuxEo6FGca0E8e YtnC8iJUc5gd/DdvjJXbqvsmz9MlpLMeFzHcARFvOOc7ww5JyHN8DXQ4acmdgXnSqXBx sCnw== X-Gm-Message-State: APjAAAVSdZb2Dyw8SK4OLqdPS9DdnORovjxQ8hdfUpKUtiBz+2ij22RA Q5HLTqseG8Qicv9ZQeo4xr8= X-Google-Smtp-Source: APXvYqzyYSD1kqH06PWZT5j+hjPxOJVeYfDpiBoVq5NBAlR42H2eqCY0MexVhcMO00FKLXtnuMtjCw== X-Received: by 2002:a17:902:bd08:: with SMTP id p8mr31051161pls.39.1579092128653; Wed, 15 Jan 2020 04:42:08 -0800 (PST) Received: from madhuparna-HP-Notebook.nitk.ac.in ([2402:3a80:1ee2:fbb9:75ba:e01f:bdbc:c547]) by smtp.gmail.com with ESMTPSA id y23sm12638990pjj.3.2020.01.15.04.42.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 15 Jan 2020 04:42:08 -0800 (PST) From: madhuparnabhowmik04@gmail.com To: wei.liu@kernel.org, paul@xen.org, davem@davemloft.net Cc: xen-devel@lists.xenproject.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, paulmck@kernel.org, joel@joelfernandes.org, frextrite@gmail.com, linux-kernel-mentees@lists.linuxfoundation.org, Madhuparna Bhowmik Subject: [PATCH] net: xen-netbank: hash.c: Use built-in RCU list checking Date: Wed, 15 Jan 2020 18:11:28 +0530 Message-Id: <20200115124129.5684-1-madhuparnabhowmik04@gmail.com> X-Mailer: git-send-email 2.17.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Madhuparna Bhowmik list_for_each_entry_rcu has built-in RCU and lock checking. Pass cond argument to list_for_each_entry_rcu. Signed-off-by: Madhuparna Bhowmik --- drivers/net/xen-netback/hash.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/net/xen-netback/hash.c b/drivers/net/xen-netback/hash.c index 10d580c3dea3..30709bc9d170 100644 --- a/drivers/net/xen-netback/hash.c +++ b/drivers/net/xen-netback/hash.c @@ -51,7 +51,8 @@ static void xenvif_add_hash(struct xenvif *vif, const u8 *tag, found = false; oldest = NULL; - list_for_each_entry_rcu(entry, &vif->hash.cache.list, link) { + list_for_each_entry_rcu(entry, &vif->hash.cache.list, link, + lockdep_is_held(&vif->hash.cache.lock)) { /* Make sure we don't add duplicate entries */ if (entry->len == len && memcmp(entry->tag, tag, len) == 0) @@ -102,7 +103,8 @@ static void xenvif_flush_hash(struct xenvif *vif) spin_lock_irqsave(&vif->hash.cache.lock, flags); - list_for_each_entry_rcu(entry, &vif->hash.cache.list, link) { + list_for_each_entry_rcu(entry, &vif->hash.cache.list, link, + lockdep_is_held(&vif->hash.cache.lock)) { list_del_rcu(&entry->link); vif->hash.cache.count--; kfree_rcu(entry, rcu); -- 2.17.1 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=-9.3 required=3.0 tests=DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,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 48E61C33CB1 for ; Wed, 15 Jan 2020 12:42:23 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (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 0F9E222522 for ; Wed, 15 Jan 2020 12:42:22 +0000 (UTC) Authentication-Results: mail.kernel.org; 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Wed, 15 Jan 2020 04:42:08 -0800 (PST) Received: from madhuparna-HP-Notebook.nitk.ac.in ([2402:3a80:1ee2:fbb9:75ba:e01f:bdbc:c547]) by smtp.gmail.com with ESMTPSA id y23sm12638990pjj.3.2020.01.15.04.42.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 15 Jan 2020 04:42:08 -0800 (PST) From: madhuparnabhowmik04@gmail.com To: wei.liu@kernel.org, paul@xen.org, davem@davemloft.net Date: Wed, 15 Jan 2020 18:11:28 +0530 Message-Id: <20200115124129.5684-1-madhuparnabhowmik04@gmail.com> X-Mailer: git-send-email 2.17.1 Cc: paulmck@kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, joel@joelfernandes.org, xen-devel@lists.xenproject.org, linux-kernel-mentees@lists.linuxfoundation.org Subject: [Linux-kernel-mentees] [PATCH] net: xen-netbank: hash.c: Use built-in RCU list checking X-BeenThere: linux-kernel-mentees@lists.linuxfoundation.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 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-kernel-mentees-bounces@lists.linuxfoundation.org Sender: "Linux-kernel-mentees" From: Madhuparna Bhowmik list_for_each_entry_rcu has built-in RCU and lock checking. Pass cond argument to list_for_each_entry_rcu. Signed-off-by: Madhuparna Bhowmik --- drivers/net/xen-netback/hash.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/net/xen-netback/hash.c b/drivers/net/xen-netback/hash.c index 10d580c3dea3..30709bc9d170 100644 --- a/drivers/net/xen-netback/hash.c +++ b/drivers/net/xen-netback/hash.c @@ -51,7 +51,8 @@ static void xenvif_add_hash(struct xenvif *vif, const u8 *tag, found = false; oldest = NULL; - list_for_each_entry_rcu(entry, &vif->hash.cache.list, link) { + list_for_each_entry_rcu(entry, &vif->hash.cache.list, link, + lockdep_is_held(&vif->hash.cache.lock)) { /* Make sure we don't add duplicate entries */ if (entry->len == len && memcmp(entry->tag, tag, len) == 0) @@ -102,7 +103,8 @@ static void xenvif_flush_hash(struct xenvif *vif) spin_lock_irqsave(&vif->hash.cache.lock, flags); - list_for_each_entry_rcu(entry, &vif->hash.cache.list, link) { + list_for_each_entry_rcu(entry, &vif->hash.cache.list, link, + lockdep_is_held(&vif->hash.cache.lock)) { list_del_rcu(&entry->link); vif->hash.cache.count--; kfree_rcu(entry, rcu); -- 2.17.1 _______________________________________________ Linux-kernel-mentees mailing list Linux-kernel-mentees@lists.linuxfoundation.org https://lists.linuxfoundation.org/mailman/listinfo/linux-kernel-mentees 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=-9.3 required=3.0 tests=DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,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 68304C33CB1 for ; Wed, 15 Jan 2020 12:57:09 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 38F362073A for ; 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Wed, 15 Jan 2020 04:42:08 -0800 (PST) Received: from madhuparna-HP-Notebook.nitk.ac.in ([2402:3a80:1ee2:fbb9:75ba:e01f:bdbc:c547]) by smtp.gmail.com with ESMTPSA id y23sm12638990pjj.3.2020.01.15.04.42.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 15 Jan 2020 04:42:08 -0800 (PST) From: madhuparnabhowmik04@gmail.com To: wei.liu@kernel.org, paul@xen.org, davem@davemloft.net Date: Wed, 15 Jan 2020 18:11:28 +0530 Message-Id: <20200115124129.5684-1-madhuparnabhowmik04@gmail.com> X-Mailer: git-send-email 2.17.1 X-Mailman-Approved-At: Wed, 15 Jan 2020 12:56:53 +0000 Subject: [Xen-devel] [PATCH] net: xen-netbank: hash.c: Use built-in RCU list checking X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: paulmck@kernel.org, frextrite@gmail.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, joel@joelfernandes.org, xen-devel@lists.xenproject.org, linux-kernel-mentees@lists.linuxfoundation.org, Madhuparna Bhowmik MIME-Version: 1.0 Content-Type: text/plain; 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