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=-12.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 0610BC4161F for ; Thu, 4 Mar 2021 00:17:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D2E5164ECF for ; Thu, 4 Mar 2021 00:17:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239831AbhCDAQw (ORCPT ); Wed, 3 Mar 2021 19:16:52 -0500 Received: from mail.kernel.org ([198.145.29.99]:49254 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1354859AbhCDALZ (ORCPT ); Wed, 3 Mar 2021 19:11:25 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id CE7D164F0D; Thu, 4 Mar 2021 00:10:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1614816644; bh=Cv30fszy5J9ao5e9qnmhCzczyGXkQ5rEaJ7pVZCBsrY=; h=Date:From:To:Cc:Subject:Reply-To:From; b=itLNaReN49kl55t9KSLLM0rjxHEenVbTKnMd6HLJWoZ6MBLGLAO1FStqXS8oljBz8 mb0khTRg6RXxQHw7f2cvbTk1FB7H47iim/sZVKqCfbGyb9iEeCmXnAojM/qVLWUG6l IR3r82uDPOSgFT2nglRTeAJsWvN6pYe1cHhbIkrYDFvGUCNv3CVxNoexMkxRJS/Tfg /sIiIjwQZxxp1jTUX5rzdssMhvU8vILytvsaizA1tYrEGVSns9I2FrhDWeeqFABwhs mA3Er7E0LmlQXj3OaKMIAucQmQAhUDTPP957w5CL9sa2VquTTvhpPZR+VgDINkO/k1 td6owJ+4qlhOA== Received: by paulmck-ThinkPad-P72.home (Postfix, from userid 1000) id A4C4D3522591; Wed, 3 Mar 2021 16:10:44 -0800 (PST) Date: Wed, 3 Mar 2021 16:10:44 -0800 From: "Paul E. McKenney" To: rcu@vger.kernel.org Cc: linux-kernel@vger.kernel.org, kernel-team@fb.com, mingo@kernel.org, jiangshanlai@gmail.com, akpm@linux-foundation.org, mathieu.desnoyers@efficios.com, josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com, fweisbec@gmail.com, oleg@redhat.com, joel@joelfernandes.org Subject: [PATCH tip/core/rcu 0/6] kvfree_rcu() updates for v5.12-rc1 Message-ID: <20210304001044.GA22871@paulmck-ThinkPad-P72> Reply-To: paulmck@kernel.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.9.4 (2018-02-28) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello! This series contains kvfree_rcu() updates, most notably surrounding GPF flags for memory allocation. 1. kvfree_rcu: Directly allocate page for single-argument case, courtesy of "Uladzislau Rezki (Sony)". 2. kvfree_rcu: Use __GFP_NOMEMALLOC for single-argument kvfree_rcu(). 3. kvfree_rcu: Make krc_this_cpu_unlock() use raw_spin_unlock_irqrestore(). 4. kvfree_rcu: Replace __GFP_RETRY_MAYFAIL by __GFP_NORETRY, courtesy of "Uladzislau Rezki (Sony)". 5. kvfree_rcu: Use same set of GFP flags as does single-argument, courtesy of "Uladzislau Rezki (Sony)". 6. Add kfree_rcu() single-argument scale test, courtesy of "Uladzislau Rezki (Sony)". Thanx, Paul ------------------------------------------------------------------------ Documentation/admin-guide/kernel-parameters.txt | 12 ++++ kernel/rcu/rcuscale.c | 15 +++++ kernel/rcu/tree.c | 63 ++++++++++++++++-------- 3 files changed, 68 insertions(+), 22 deletions(-)