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=-3.3 required=3.0 tests=BAYES_00, BUG6152_INVALID_DATE_TZ_ABSURD,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS,INVALID_DATE_TZ_ABSURD,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 30D26C55178 for ; Fri, 23 Oct 2020 07:23:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BBB2E20936 for ; Fri, 23 Oct 2020 07:23:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="ABh9/5/+"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="6sGdLA6e" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S374146AbgJWHXn (ORCPT ); Fri, 23 Oct 2020 03:23:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48170 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S368405AbgJWHXn (ORCPT ); Fri, 23 Oct 2020 03:23:43 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3605CC0613CE for ; Fri, 23 Oct 2020 00:23:43 -0700 (PDT) From: John Ogness DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1603437821; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=tf5c0R/jL+DCKGv4s4dNfadHjgCPr1nrMIbHKu29JL8=; b=ABh9/5/+GAUbyplebUP5OHZGDVEMWx/GxlQD7sh01L4w32an0C0K5jJxwvvDDJXrcIygxs tluwVg8nHaxwnBo4HpyivNiDuHdK4FJKA7Y0KhuRC0fRUOBCtiXrCWMub6kt57jTe4ltSa MXhlZiWP6fJ3K67OSswwA68SxcM9PJA6VBwAbKbmP2j7lF19k4oTLyVvSelxuhcSEPxYIH O9qb9MG9awSlKG2kIKexr061TTzaI8r9C808CK9MQvZFBjlDV9hYKrBnBuI/5cw8l7MM6C SqWjmH5hOUL+JL2q/XkxisZ982AMuxo+J3s3s/59h+5Z4FpXt8cNtRal3XYo4g== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1603437821; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=tf5c0R/jL+DCKGv4s4dNfadHjgCPr1nrMIbHKu29JL8=; b=6sGdLA6eiuGOLRJIWi61oJ3lJi9hUhocq9ZOMQyBehgndLQWrk5SzBY4VNwe12zzRicBHo XwnbhYCLK0/N1ZBw== To: Sebastian Andrzej Siewior , Mike Galbraith Cc: linux-rt-users Subject: Re: printk: add pr_flush() In-Reply-To: <20201022145214.a5sm66naswycezae@linutronix.de> References: <15cd3dc322eb1485fe1e67df465febdc6ad389d8.camel@gmx.de> <20201022141529.zvwafoqglnhyklj5@linutronix.de> <43c56d9bd7c5d0b7c455a5ba3c00080b1600b718.camel@gmx.de> <20201022145214.a5sm66naswycezae@linutronix.de> Date: Fri, 23 Oct 2020 09:29:41 +0206 Message-ID: <877drhmmma.fsf@jogness.linutronix.de> MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-rt-users@vger.kernel.org Hi Sebastian, The "printk: add pr_flush()" patch should be removed from PREEMPT_RT until this issue is resolved. I am getting several independent bug reports of reboot problems. Note that on crash situations the full ringbuffer should still be printed. pr_flush() was only responsible for non-crash scenarios. John Ogness