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 EEBE5C4167E for ; Mon, 9 May 2022 14:17:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236957AbiEIOUy (ORCPT ); Mon, 9 May 2022 10:20:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47400 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236866AbiEIOUs (ORCPT ); Mon, 9 May 2022 10:20:48 -0400 Received: from fanzine2.igalia.com (fanzine.igalia.com [178.60.130.6]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5AE601FB548; Mon, 9 May 2022 07:16:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=igalia.com; s=20170329; h=Content-Transfer-Encoding:Content-Type:In-Reply-To:From: References:Cc:To:Subject:MIME-Version:Date:Message-ID:Sender:Reply-To: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=vHtkmd2lwLYVtO4FWqrbyaVkWxRk4axb2Qa+PPeChZA=; b=LskkzzJmYfWYXPeDfr2IdCaTLR 3hA3AwAXsFwPvw1yZOWysZYMySqHGiMeZOm0bDb2Q6RbJ01gLxUFvc0TPbGO4CNTknFlmWLHek9+j fNw6GIgfVAC2AwFEbPjx/A49ZgvLf4C98a1NhLhauKhl6X16yGXgUhVYkbLiMhd2bcyjc8FRhGAlV b0fE3r5ZHANgTVnzKk9zmgNYn+K1dB4VlK+OrOntysNOTeFSF6+gnM24q5MRGfpCActKh2ASDkGBP /lhbboZ2BaxSaPQdOYRyUWk/WZOTlB1ImMULVLiCjsomiGL/EUGjICR18d54kbZvnwoQGALy9IH6V nZhYpE5g==; Received: from [177.183.162.244] (helo=[192.168.0.5]) by fanzine2.igalia.com with esmtpsa (Cipher TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_128_GCM:128) (Exim) id 1no4Bp-000ApE-Jf; Mon, 09 May 2022 16:16:45 +0200 Message-ID: <7017c234-7c73-524a-11b6-fefdd5646f59@igalia.com> Date: Mon, 9 May 2022 11:16:10 -0300 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.8.1 Subject: Re: [PATCH 22/30] panic: Introduce the panic post-reboot notifier list Content-Language: en-US To: Alexander Gordeev , Christian Borntraeger , "David S. Miller" , Heiko Carstens , Sven Schnelle , Vasily Gorbik Cc: linux-kernel@vger.kernel.org, bcm-kernel-feedback-list@broadcom.com, linuxppc-dev@lists.ozlabs.org, linux-alpha@vger.kernel.org, linux-edac@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-leds@vger.kernel.org, pmladek@suse.com, bhe@redhat.com, akpm@linux-foundation.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linux-pm@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-s390@vger.kernel.org, kexec@lists.infradead.org, linux-tegra@vger.kernel.org, linux-um@lists.infradead.org, linux-xtensa@linux-xtensa.org, netdev@vger.kernel.org, openipmi-developer@lists.sourceforge.net, rcu@vger.kernel.org, sparclinux@vger.kernel.org, xen-devel@lists.xenproject.org, x86@kernel.org, kernel-dev@igalia.com, kernel@gpiccoli.net, halves@canonical.com, fabiomirmar@gmail.com, alejandro.j.jimenez@oracle.com, andriy.shevchenko@linux.intel.com, arnd@arndb.de, bp@alien8.de, corbet@lwn.net, d.hatayama@jp.fujitsu.com, dave.hansen@linux.intel.com, dyoung@redhat.com, feng.tang@intel.com, gregkh@linuxfoundation.org, mikelley@microsoft.com, hidehiro.kawai.ez@hitachi.com, jgross@suse.com, john.ogness@linutronix.de, keescook@chromium.org, luto@kernel.org, mhiramat@kernel.org, mingo@redhat.com, paulmck@kernel.org, peterz@infradead.org, rostedt@goodmis.org, senozhatsky@chromium.org, stern@rowland.harvard.edu, tglx@linutronix.de, vgoyal@redhat.com, vkuznets@redhat.com, will@kernel.org References: <20220427224924.592546-1-gpiccoli@igalia.com> <20220427224924.592546-23-gpiccoli@igalia.com> From: "Guilherme G. Piccoli" In-Reply-To: <20220427224924.592546-23-gpiccoli@igalia.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 27/04/2022 19:49, Guilherme G. Piccoli wrote: > Currently we have 3 notifier lists in the panic path, which will > be wired in a way to allow the notifier callbacks to run in > different moments at panic time, in a subsequent patch. > > But there is also an odd set of architecture calls hardcoded in > the end of panic path, after the restart machinery. They're > responsible for late time tunings / events, like enabling a stop > button (Sparc) or effectively stopping the machine (s390). > > This patch introduces yet another notifier list to offer the > architectures a way to add callbacks in such late moment on > panic path without the need of ifdefs / hardcoded approaches. > > Cc: Alexander Gordeev > Cc: Christian Borntraeger > Cc: "David S. Miller" > Cc: Heiko Carstens > Cc: Sven Schnelle > Cc: Vasily Gorbik > Signed-off-by: Guilherme G. Piccoli Hey S390/SPARC folks, sorry for the ping! Any reviews on this V1 would be greatly appreciated, I'm working on V2 and seeking feedback in the non-reviewed patches. Thanks in advance, Guilherme