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=-13.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_IN_DEF_DKIM_WL autolearn=no 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 B942FC433E0 for ; Thu, 21 Jan 2021 13:13:59 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 2C1D223A00 for ; Thu, 21 Jan 2021 13:13:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2C1D223A00 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 40AED6B0007; Thu, 21 Jan 2021 08:13:58 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 3BA136B0008; Thu, 21 Jan 2021 08:13:58 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 2A9AF6B000A; Thu, 21 Jan 2021 08:13:58 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0106.hostedemail.com [216.40.44.106]) by kanga.kvack.org (Postfix) with ESMTP id 10E176B0007 for ; Thu, 21 Jan 2021 08:13:58 -0500 (EST) Received: from smtpin04.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id D0B45181AEF3F for ; Thu, 21 Jan 2021 13:13:57 +0000 (UTC) X-FDA: 77729824914.04.berry98_020658e27563 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin04.hostedemail.com (Postfix) with ESMTP id AF9578016DD2 for ; Thu, 21 Jan 2021 13:13:57 +0000 (UTC) X-HE-Tag: berry98_020658e27563 X-Filterd-Recvd-Size: 3777 Received: from mail-qt1-f177.google.com (mail-qt1-f177.google.com [209.85.160.177]) by imf08.hostedemail.com (Postfix) with ESMTP for ; Thu, 21 Jan 2021 13:13:57 +0000 (UTC) Received: by mail-qt1-f177.google.com with SMTP id c12so1439348qtv.5 for ; Thu, 21 Jan 2021 05:13:57 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=YLF2LgcHZ5DDqDazshlamJH0LMkuaN2/iqWq+I3Vnnk=; b=cd9OxPlRA3NGn6WxwIGITPEw7+UzXHbPgSZU/5BS7jYp6BYL0OXp2IyBcPE6JlRpf1 qWDMHdUT2jnZQnGdHaPnkc+I7eMBR9eTp3kfSzZtu055dKw9spDa2ZDP0uXoNDzFsom9 zzc6Hre3OhsWYZwtNXkoYdBp/s8fVbH1YzQsPY0DVSabehP7mi351ECC0SCpkdOVwPZE C3WUKW681ZruaNvJP88MT5OHC0u9XYDSrvP/7ZCPbmzXapinmW2lOqyYpivm3NjCDcNO uz2swXoEDM6VgsNTwcWQRwOSHRvi8AW/zhP2z3q9LDeDUHX/NrGSDGNDkOVumnHum+U8 I7xA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=YLF2LgcHZ5DDqDazshlamJH0LMkuaN2/iqWq+I3Vnnk=; b=e2SywMtVW9RjaQQlmFLwbog0QZGxJCFyXxrxpLSwYr5DAPLY6pk6tXEYZwsZa8jd4F baDVARmxL1g9IKNK0UtL4VvypeiRzRfrPbk1/wkWcL5Is3uLvgHcjU4vd4EkBndq5Jj2 gjezICn/j7/OnPr8rah06RnIkuqtbFVBCeV86yK0PrH0H5+JdcUaVsJte2kRRfUf77+U JK9PuHH0yX0SEZAQx/QJWQz5IL+WfC0eX1HFinhnCFqSVV++xz98KwEbk/9ZUHlRVnS9 7sL1OOEoMIeZgEHrpc4R6dSZWN27HPS1x/zbpAE9MUG9IvJf/qf+V3I29J+agfcDXPJa Dikw== X-Gm-Message-State: AOAM533FtwXB79wRDvNabHXRJAqrulNZn9Uo8gLArWhOvpxOrvZUvKHe CNinaVN32trDHF2CA4BylNtvKnbE0tM88H/7EJSuJQ== X-Google-Smtp-Source: ABdhPJwPMOyA61qAapbbCW1TPCBI3hRdcUzarAepbrG9mvi3+kAHKu7qPzTfKGToYHAPCaWHOxIKhwd47U8kAEnwwFw= X-Received: by 2002:ac8:7111:: with SMTP id z17mr13542060qto.369.1611234836264; Thu, 21 Jan 2021 05:13:56 -0800 (PST) MIME-Version: 1.0 References: <20210115130336.2520663-1-glider@google.com> <20210115130336.2520663-3-glider@google.com> In-Reply-To: From: Alexander Potapenko Date: Thu, 21 Jan 2021 14:13:43 +0100 Message-ID: Subject: Re: [PATCH v2 2/5] lib: add error_report_notify to collect debugging tools' reports To: Petr Mladek , Andrew Morton , Steven Rostedt , Greg Kroah-Hartman Cc: LKML , Andrey Konovalov , Dmitriy Vyukov , Ingo Molnar , Marco Elver , Sergey Senozhatsky , Linux Memory Management List Content-Type: text/plain; charset="UTF-8" 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: Thank you all for the comments! Since concerns have been raised that another error reporting system may quickly go out of control, we've decided to not pursue this solution any further. Instead, we will try to rely on existing ftrace mechanisms to deliver notifications to the userspace, and perform dmesg collection/parsing once a notification is received. As a result, we won't need the error_report_start tracepoint anytime soon (I didn't rename error_report_end to something like error_report anticipating that error_report_start may be needed in the future). I've also dropped the error_report_notify library and the corresponding documentation from the patchset.