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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id B6024CF3941 for ; Thu, 19 Sep 2024 14:00:55 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 23F0A6B0092; Thu, 19 Sep 2024 10:00:55 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 1EF6F6B0093; Thu, 19 Sep 2024 10:00:55 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 0B8796B0095; Thu, 19 Sep 2024 10:00:55 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id E05A66B0092 for ; Thu, 19 Sep 2024 10:00:54 -0400 (EDT) Received: from smtpin26.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay03.hostedemail.com (Postfix) with ESMTP id 779A2A0D7B for ; Thu, 19 Sep 2024 14:00:54 +0000 (UTC) X-FDA: 82581648828.26.AFAFAE4 Received: from frasgout11.his.huawei.com (frasgout11.his.huawei.com [14.137.139.23]) by imf24.hostedemail.com (Postfix) with ESMTP id 9D25E180004 for ; Thu, 19 Sep 2024 14:00:49 +0000 (UTC) Authentication-Results: imf24.hostedemail.com; dkim=none; dmarc=none; spf=pass (imf24.hostedemail.com: domain of jonas.oberhauser@huaweicloud.com designates 14.137.139.23 as permitted sender) smtp.mailfrom=jonas.oberhauser@huaweicloud.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1726754369; a=rsa-sha256; cv=none; b=KPTgIdl9ufOCoU+ug5qvPtdadTnoJ2/yFK0guWhfkaYE38SRZhyMUIiDM0eJx/PwaUGLl7 k3j0K1fRTLOhjJK3Qs9zHqMdO30KR6yGLAJ9P9tMPceAu7IENomNzhDLMbCn9gWyQl0btf 4y1ub9bV6/sD3JoXUeSr2EgUjRDRCwQ= ARC-Authentication-Results: i=1; imf24.hostedemail.com; dkim=none; dmarc=none; spf=pass (imf24.hostedemail.com: domain of jonas.oberhauser@huaweicloud.com designates 14.137.139.23 as permitted sender) smtp.mailfrom=jonas.oberhauser@huaweicloud.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1726754369; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=sxPsdUV/JbO3EAljb/J+pSIpi0qe9118kkf9md9q9Ds=; b=fTDycVREv8KPpRBccfjHKF13hA/FummM9dufM1D4OywBDuo7i9biPPolIQlD5K/WgOOV9S Q66RnsZLErL4qg+V2aRE5AUXUj5tvNm7KqEwl+974HqfvmyTP7+beIP7zRpXVmLECwexrV aRr16vNeCElbUUwaWQqXM9aG/rtpUW0= Received: from mail.maildlp.com (unknown [172.18.186.51]) by frasgout11.his.huawei.com (SkyGuard) with ESMTP id 4X8c9W1zLCz9v7Hl for ; Thu, 19 Sep 2024 21:41:03 +0800 (CST) Received: from mail02.huawei.com (unknown [7.182.16.27]) by mail.maildlp.com (Postfix) with ESMTP id 65D5A1401F1 for ; Thu, 19 Sep 2024 22:00:42 +0800 (CST) Received: from [10.81.207.148] (unknown [10.81.207.148]) by APP2 (Coremail) with SMTP id GxC2BwBHqcl5LuxmWCM9AQ--.55605S2; Thu, 19 Sep 2024 15:00:41 +0100 (CET) Message-ID: Date: Thu, 19 Sep 2024 16:00:22 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC PATCH 1/4] hazptr: Add initial implementation of hazard pointers To: Boqun Feng , linux-kernel@vger.kernel.org, rcu@vger.kernel.org, linux-mm@kvack.org, lkmm@vger.kernel.org Cc: "Paul E. McKenney" , Frederic Weisbecker , Neeraj Upadhyay , Joel Fernandes , Josh Triplett , Uladzislau Rezki , Steven Rostedt , Mathieu Desnoyers , Lai Jiangshan , Zqiang , Peter Zijlstra , Ingo Molnar , Will Deacon , Waiman Long , Mark Rutland , Thomas Gleixner , Kent Overstreet , Linus Torvalds , Vlastimil Babka , maged.michael@gmail.com, Neeraj Upadhyay References: <20240917143402.930114-1-boqun.feng@gmail.com> <20240917143402.930114-2-boqun.feng@gmail.com> From: Jonas Oberhauser In-Reply-To: <20240917143402.930114-2-boqun.feng@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-CM-TRANSID:GxC2BwBHqcl5LuxmWCM9AQ--.55605S2 X-Coremail-Antispam: 1UD129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7v73 VFW2AGmfu7bjvjm3AaLaJ3UjIYCTnIWjp_UUUY37kC6x804xWl14x267AKxVWrJVCq3wAF c2x0x2IEx4CE42xK8VAvwI8IcIk0rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2ocxC64kIII 0Yj41l84x0c7CEw4AK67xGY2AK021l84ACjcxK6xIIjxv20xvE14v26r1j6r1xM28EF7xv wVC0I7IYx2IY6xkF7I0E14v26r4j6F4UM28EF7xvwVC2z280aVAFwI0_Gr0_Cr1l84ACjc xK6I8E87Iv6xkF7I0E14v26r4UJVWxJr1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG 64xvF2IEw4CE5I8CrVC2j2WlYx0E2Ix0cI8IcVAFwI0_Jr0_Jr4lYx0Ex4A2jsIE14v26r 1j6r4UMcvjeVCFs4IE7xkEbVWUJVW8JwACjcxG0xvEwIxGrwACI402YVCY1x02628vn2kI c2xKxwCF04k20xvY0x0EwIxGrwCF54CYxVCY1x0262kKe7AKxVW8ZVWrXwCFx2IqxVCFs4 IE7xkEbVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1r MI8E67AF67kF1VAFwI0_GFv_WrylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUJV WUCwCI42IY6xIIjxv20xvEc7CjxVAFwI0_Gr0_Cr1lIxAIcVCF04k26cxKx2IYs7xG6r1j 6r1xMIIF0xvEx4A2jsIE14v26r4j6F4UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Gr1j6F4UJb IYCTnIWIevJa73UjIFyTuYvjxUFYFCUUUUU X-CM-SenderInfo: 5mrqt2oorev25kdx2v3u6k3tpzhluzxrxghudrp/ X-Rspamd-Queue-Id: 9D25E180004 X-Rspam-User: X-Rspamd-Server: rspam05 X-Stat-Signature: jhcjkgn9f8jiq3zw76it7gacrurzqzfh X-HE-Tag: 1726754449-19094 X-HE-Meta: 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 FpReu65L 8PNPEMDCxZ+uXcPylr2jlG25gM4jmEDyQoOY7ytyMD6DoEYlNZICe3X7CvXu8Pi6WuGeHPLjWmXg8zGqMtevDZIKBGHQ+4NS11zTRaCY3IdOATCv6Q4gGyl59E6HxG7gPnzTV7OVoxMvMD2xbzG8MghgzbcM9CRK7up8noCvfy0ea62uJl0uolqqbu1M5/VRbHSssW3e3aC9M5OP8VldJLQtHpJlYBziG7D6VAgsYoK5uxcQ= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Am 9/17/2024 um 4:33 PM schrieb Boqun Feng: > +#define hazptr_protect(hzp, gp, field) ({ \ > + typeof(gp) ___p; \ > + \ > + ___p = hazptr_tryprotect(hzp, gp, field); \ > + BUG_ON(!___p); \ > + ___p; \ > +}) Hi Boqun, why crash instead of retry? jonas