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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 89AC8C433FE for ; Wed, 24 Nov 2021 11:04:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238603AbhKXLHf (ORCPT ); Wed, 24 Nov 2021 06:07:35 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59260 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241705AbhKXLGj (ORCPT ); Wed, 24 Nov 2021 06:06:39 -0500 Received: from mail-lf1-x12a.google.com (mail-lf1-x12a.google.com [IPv6:2a00:1450:4864:20::12a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0A0F9C06174A; Wed, 24 Nov 2021 03:03:29 -0800 (PST) Received: by mail-lf1-x12a.google.com with SMTP id t26so6111408lfk.9; Wed, 24 Nov 2021 03:03:29 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=cdnfb6JAC8IqMAPyGf54ho4rdbZxXTjfSiWGorerRPI=; b=aV6/kr8THARNLo9CQffteQh8JXkHfpeQEBbDjlBEebivKiWSLjHZ2DNlb54/dvHlf8 JCJIOSGWVXtzZtqWXQFWqTLigrx+GGDJ+97ycMBzoyOJT7akL5qoT2u/oS93R1kvE6L3 41d0IgiXtupSnRypX7HRbZVc0364DFXvdk//jNmeAp+bN/d7poNecZFHxrXEW0FqiMzG I9AnXst8/hGfF+Ne0ZZJzXZh2mmaXPwyeJjEJCnfJQcXjvGzadsPuoH9EEMHKi5WRIsY wiSaITxdXBFTP/WFJ2Fy4DbvqjRsb9Xx1g5avh5wqzoAf63X1l6MU7AHgvMUt1+vXyLq 4DwA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=cdnfb6JAC8IqMAPyGf54ho4rdbZxXTjfSiWGorerRPI=; b=YV2HwzyWaUh2TmCNcVA6OVaWPkptATda1Smx/j5hBvAK0UKoT2iJc50ved+0z+uqRy Acj4vUe0w0le3aGhCfWKu8QLp7p8UeePE/dKSDCNEP3WwIgEms27H7fQfrPV+AH/XB9w KRB+t1uOiWlipXg1Yi0Z5WfbOkTa7SzXlrunE+dRm95cX2ufsXFV2C44OzRSlUzJrn9w M64bRAKZMZem26URUyNoURPi0MKEm8zTAeiDSltcQQOCwLgI68B67YKPPUFlMGY1jVeH bbd5CIJHJxXgpTJaYj4m5ILCLD3oscPHjSfr4XF1jLpxNthShpFpK3I1y2y9AUpdRD7I plCQ== X-Gm-Message-State: AOAM530BncYilyWdb1vTKtVtppUS0gdz0wrRIC39+iAZt4MiGBj9Nc/m N15mwb+0pxtatbRb6ijFI/0Jswo1vcKVZVk5 X-Google-Smtp-Source: ABdhPJyj9sK8Pw7Gg54VnENOl++u6v6xBuxa+G407WjBk+UAvR0Xte93hDoqjkoINY+vbGQ1t8UA1Q== X-Received: by 2002:a05:6512:3da2:: with SMTP id k34mr13279306lfv.605.1637751806826; Wed, 24 Nov 2021 03:03:26 -0800 (PST) Received: from pc638.lan (h5ef52e3d.seluork.dyn.perspektivbredband.net. [94.245.46.61]) by smtp.gmail.com with ESMTPSA id u22sm1579907lff.118.2021.11.24.03.03.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 24 Nov 2021 03:03:26 -0800 (PST) From: "Uladzislau Rezki (Sony)" To: LKML , RCU , "Paul E . McKenney" Cc: Michal Hocko , Andrew Morton , Daniel Axtens , Frederic Weisbecker , Neeraj Upadhyay , Joel Fernandes , Peter Zijlstra , Thomas Gleixner , "Theodore Y . Ts'o" , Sebastian Andrzej Siewior , Uladzislau Rezki , Oleksiy Avramchenko , Luis Chamberlain Subject: [PATCH 8/9] module: Switch to kvfree_rcu() API Date: Wed, 24 Nov 2021 12:03:07 +0100 Message-Id: <20211124110308.2053-9-urezki@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20211124110308.2053-1-urezki@gmail.com> References: <20211124110308.2053-1-urezki@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Instead of invoking a synchronize_rcu() to free a pointer after a grace period we can directly make use of new API that does the same but in more efficient way. CC: Luis Chamberlain Signed-off-by: Uladzislau Rezki (Sony) --- kernel/module.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/kernel/module.c b/kernel/module.c index 84a9141a5e15..f404f0c9f385 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -4150,8 +4150,7 @@ static int load_module(struct load_info *info, const char __user *uargs, ddebug_cleanup: ftrace_release_mod(mod); dynamic_debug_remove(mod, info->debug); - synchronize_rcu(); - kfree(mod->args); + kvfree_rcu(mod->args); free_arch_cleanup: cfi_cleanup(mod); module_arch_cleanup(mod); -- 2.30.2