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=-5.3 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable 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 90CD0C41514 for ; Sat, 17 Aug 2019 04:43:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 672C821743 for ; Sat, 17 Aug 2019 04:43:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=joelfernandes.org header.i=@joelfernandes.org header.b="I+BSH0Gv" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726002AbfHQEn0 (ORCPT ); Sat, 17 Aug 2019 00:43:26 -0400 Received: from mail-pf1-f195.google.com ([209.85.210.195]:42099 "EHLO mail-pf1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725889AbfHQEn0 (ORCPT ); Sat, 17 Aug 2019 00:43:26 -0400 Received: by mail-pf1-f195.google.com with SMTP id i30so4132954pfk.9 for ; Fri, 16 Aug 2019 21:43:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=joelfernandes.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=Qx7dTBSG5mnk9PlWmVRYTFFzE3XW/jirUbpR2SM2oiA=; b=I+BSH0Gvlmmo/v+XAvC4f1KctY9tlqWzkGt0C/mQ2gw5HOchK0I1p8OoJJlJnk0pQl JJ+dHLbFJAa2ESNGTwQuQzfyfmrkLybo+ACnkTe45dIo89s8tgvDBgH3qQXOFxzHiLNm PEbTOPapMI6eaczSnfX5GUDCNSho7F/8i3jsE= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=Qx7dTBSG5mnk9PlWmVRYTFFzE3XW/jirUbpR2SM2oiA=; b=HhnipMB0FvT2VmFxO0jydglA533koKV3LXkNc3iV7I2xMjKezTnMXk66MppHF8TX84 bn+QWh3FEFIg2hvZNNkawHTuQaWkfp6wjDQCI4ChhFel9XbdlppZeh+OXkCBzKlwkh71 DBexpuUzP1Vwfg65Con4TEWlB463s2TB9sgqU8a3I03m7JIMyZBCaBVyPWoieWpuMS8t oS0F+LjPeyxtIT0ziNiXBiRebEwxoTaYKY6MoDRskNXIzYgFj2UtKsiON1jQmXrLMmas jtxXuSNv6hzcrH27+2O0NR+X0HM6Gt/3Xlip3/pe7e8U4pxlCbPKhSNXTzVBbm7NGww3 m5Lg== X-Gm-Message-State: APjAAAWs6itDpVvAOwSz+Q75kxJqUYdMpoNZQeCAAwNGmxVhDXUD+NuS fOUZSSr3MnL9hf+WwNz71OPamQ== X-Google-Smtp-Source: APXvYqyBu3kIqgX8zTEo5NzvbBjhOsyHwgwMssvSZCuLP0+UnBJsxmwTNR4U2NeBP//sTg8GqJYqhw== X-Received: by 2002:aa7:984a:: with SMTP id n10mr14319362pfq.3.1566017006016; Fri, 16 Aug 2019 21:43:26 -0700 (PDT) Received: from localhost ([172.19.216.18]) by smtp.gmail.com with ESMTPSA id q4sm12828431pff.183.2019.08.16.21.43.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 16 Aug 2019 21:43:25 -0700 (PDT) Date: Sat, 17 Aug 2019 00:43:08 -0400 From: Joel Fernandes To: Paul Walmsley Cc: linux-kernel@vger.kernel.org, Palmer Dabbelt , "Paul E. McKenney" , rcu@vger.kernel.org, linux-riscv@lists.infradead.org Subject: Re: [PATCH -rcu/dev] Please squash: fixup! rcu/tree: Add basic support for kfree_rcu() batching Message-ID: <20190817044308.GA139754@google.com> References: <20190817042211.137149-1-joel@joelfernandes.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Sender: rcu-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: rcu@vger.kernel.org On Fri, Aug 16, 2019 at 09:38:54PM -0700, Paul Walmsley wrote: > On Sat, 17 Aug 2019, Joel Fernandes (Google) wrote: > > > xchg() on a bool is causing issues on riscv and arm32. > > Indeed, it seems best not to use xchg() on any type that's not 32 bits > long or that's not the CPU's native word size. Probably we should update > the documentation. I would endorse any such documentation effort ;-) > > Please squash this into the -rcu dev branch to resolve the issue. > > > > Please squash this fix. > > > > Fixes: -rcu dev commit 3cbd3aa7d9c7bdf ("rcu/tree: Add basic support for kfree_rcu() batching") > > > > Signed-off-by: Joel Fernandes (Google) > > Link: https://lore.kernel.org/lkml/alpine.DEB.2.21.9999.1908161931110.32497@viisi.sifive.com/T/#me9956f66cb611b95d26ae92700e1d901f46e8c59 > Reviewed-by: Paul Walmsley Thanks Paul! And nice to meet you again after many years ;-) Glad to see you working on riscv. thanks, - Joel