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=-0.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 AC2D0C433DF for ; Fri, 15 May 2020 16:36:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 875E3206C0 for ; Fri, 15 May 2020 16:36:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="ZhAOfp+U" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726294AbgEOQgl (ORCPT ); Fri, 15 May 2020 12:36:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54804 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726246AbgEOQgl (ORCPT ); Fri, 15 May 2020 12:36:41 -0400 Received: from mail-pf1-x441.google.com (mail-pf1-x441.google.com [IPv6:2607:f8b0:4864:20::441]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 528B5C061A0C for ; Fri, 15 May 2020 09:36:41 -0700 (PDT) Received: by mail-pf1-x441.google.com with SMTP id z1so1186876pfn.3 for ; Fri, 15 May 2020 09:36:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:date:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=Bh8ixcsDUuAv48rLKduFHjKYM7D8+5KBZ3dzDMIQTNo=; b=ZhAOfp+UMX7lLYJr0/PzKOR6v3qyxcZXl6kAhItI0c2DozwmG3GHhsAqobF3tB1Jvd J9KilAgtSIXAm4tsiWHhTQAd49AVoLwHeU0onuhtROXUoKNksqRkcWoiDMcSwMu7ECY6 slkOEZDJPkv89qedsX589SJUcHR0iwluBOh68DJUz591pQWXlJDhv0YuPMjrMsH4IzOb A9Tjb+tkJUovBT14Jg6IR2YvPBvJ4qX23PG2Mqkh56Ql6OCE0uYq2OD8sqw37IY97Gw0 b4ZvA6YJfE2uVIADBY8mrnPQDDImVu2JeTffLG/JLbox29tZsIqWAO9YD9YLFVFmipUQ SGbA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:date:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=Bh8ixcsDUuAv48rLKduFHjKYM7D8+5KBZ3dzDMIQTNo=; b=XCe3fQFIT3gDIN0NUqz9t4rlhbZ/ExzYCf2/4yU/PrsbwuIXQZHNLIqqiAnuqkBLfs uiJcJ2D4oO2MNuTiHqhJS5IGpqDGNs62NGqbgIBgqR6Q179R+eDD7gJRewI3fPd7Zb7L Ea9c+5psfdicafch2DoKhxItQUUNcGG/+q7H7holOuZAWtrWKJ/ZIeZ6MyaUPVjgLJsR Y+UNmxqFBTjE5jnEeQYVv8lf4yF9BbTbhKRqBaot96aDh3mvVEnX8upNZYi2VE8cNKJC zA3GHaJp1C0Bvgl8Ip0ZUf4ZSAYBlfPEy6DASrNodeSvPeKe2CTG/oepinCz58MHjA7B +MvA== X-Gm-Message-State: AOAM530ldjiM6xRi0DQ4m9VlxxjFsqBiygjNHzE2nBL7EyDlhvegehNO bPaGyB33dBBMeCCVFyaLQiY= X-Google-Smtp-Source: ABdhPJwzdar/iwUxzCQU7H1yQOkxLGAdRa+i9xU4TgPUhSS8+Y06un4TwoVVGYWcRVTsTSJlSN0p4Q== X-Received: by 2002:a65:6799:: with SMTP id e25mr4100089pgr.9.1589560600837; Fri, 15 May 2020 09:36:40 -0700 (PDT) Received: from localhost ([2409:10:2e40:5100:6e29:95ff:fe2d:8f34]) by smtp.gmail.com with ESMTPSA id kr1sm1882333pjb.26.2020.05.15.09.36.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 15 May 2020 09:36:40 -0700 (PDT) From: Sergey Senozhatsky X-Google-Original-From: Sergey Senozhatsky Date: Sat, 16 May 2020 01:36:38 +0900 To: Sumit Garg Cc: Sergey Senozhatsky , Petr Mladek , Daniel Thompson , Jason Wessel , Douglas Anderson , kgdb-bugreport@lists.sourceforge.net, Linux Kernel Mailing List , Arnd Bergmann , Andrew Morton , Peter Zijlstra , Steven Rostedt , John Ogness Subject: Re: [PATCH] printk/kdb: Redirect printk messages into kdb in any context Message-ID: <20200515163638.GI42471@jagdpanzerIV.localdomain> References: <1589273314-12060-1-git-send-email-sumit.garg@linaro.org> <20200512142533.ta4uejwmq5gchtlx@holly.lan> <20200514084230.GO17734@linux-b0ei> <20200515085021.GS17734@linux-b0ei> <20200515103308.GD42471@jagdpanzerIV.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On (20/05/15 17:32), Sumit Garg wrote: > > Can I please have some context what problem does this solve? > > You can find the problem description here [1] which leads to this fix. [..] > [1] https://lkml.org/lkml/2020/5/12/213 Thanks for the link. I'm slightly surprised it took so many years to notice the addition of printk_nmi/printk_safe :) -ss