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=-2.2 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, USER_AGENT_SANE_1 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 C0DA7C4CEC9 for ; Wed, 18 Sep 2019 08:10:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 92D3F20882 for ; Wed, 18 Sep 2019 08:10:18 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="j45NAW+P" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727715AbfIRIKR (ORCPT ); Wed, 18 Sep 2019 04:10:17 -0400 Received: from mail-pg1-f170.google.com ([209.85.215.170]:41775 "EHLO mail-pg1-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726824AbfIRIKR (ORCPT ); Wed, 18 Sep 2019 04:10:17 -0400 Received: by mail-pg1-f170.google.com with SMTP id x15so3548378pgg.8 for ; Wed, 18 Sep 2019 01:10:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=0OJKqrOMfT3gQYmIuxyvEYCFGosdjavxJSBJmH5EopI=; b=j45NAW+P8VXhZAG1sXy3EoVvE1sWmossLDs+RTftL6VuJrd0YcUaW45qSlkSLNRl94 Cqe8Q3ttxpYYcYPjWn7o67n4QVmob2kQoAKUOx2xd+cOv6YtMo4xi4JmXiFYRWY3iFWM QlyHAm+jpN9EJ45ld+50JfsV3Ojz8KKpLoCJWNzwVC92KvkbHBo64uCct7MATEv9YgsC Uhq/m0664Ngwmgm0+GaJGm1kVtgyvKwbunqXgh0JCfv+a7N87W46iCeFmg2o2kWaSPfv 4GukDY7rOffvycnPfocX0Bgk+Ly4Nc54Q26GaytcidPQO/s+AGVDN6E+WENu3a9iCvKg a3IQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=0OJKqrOMfT3gQYmIuxyvEYCFGosdjavxJSBJmH5EopI=; b=kGKasAnpAu35vlZ+mEFB2GUyxr7/wu8VWSNNoSg65sHuKuj+NOKyc8UGBhSJg7wFkE HBf6cO+k7TgkzXRrbLD+7lemd7kaFcuQrBkFlHWTbdlTcaHwBvKoFtM3nnZSCpp0UM93 shyxjTU8E2lO/bGWe0KwpynKlm3uHs92e4f2GrHQ+kKUfzVqdR82L2wQe8pZnUiD8BH0 lh/g0TNkv/w3dpnuEZ5vKuFjTrPSplDjelUyHMCsxUjDfI1MIpx5tXITwflu3GhrwhiO Q2TQg9c4he+FmOo5aMaQJoUyqg3GnDa56z/cf44nTcmE1HGLeJxiNZ5eXJkrWifbiS3I f/NA== X-Gm-Message-State: APjAAAXFARQA5/z0V05EURvnSvhu2jDlHeVe/X0K1SRq9TqzH3AYdxUE iB68VT6b6R9T2xfae7fO2lY= X-Google-Smtp-Source: APXvYqy44tHtIn0+D+rYldCYXAdpnd84tN7ibv2xgGKUBor4nM7jYb1J/Fy/B83tFK+lntfKnESGJg== X-Received: by 2002:aa7:9ddd:: with SMTP id g29mr2857763pfq.146.1568794216357; Wed, 18 Sep 2019 01:10:16 -0700 (PDT) Received: from localhost ([175.223.34.14]) by smtp.gmail.com with ESMTPSA id g12sm4177204pgb.26.2019.09.18.01.10.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Sep 2019 01:10:15 -0700 (PDT) Date: Wed, 18 Sep 2019 17:10:12 +0900 From: Sergey Senozhatsky To: John Ogness Cc: Sergey Senozhatsky , Steven Rostedt , Linus Torvalds , Thomas Gleixner , Peter Zijlstra , Petr Mladek , Andrea Parri , Sergey Senozhatsky , Brendan Higgins , Greg Kroah-Hartman , LKML , Theodore Ts'o , Paul Turner , Daniel Vetter , Prarit Bhargava Subject: Re: printk meeting at LPC Message-ID: <20190918081012.GB37041@jagdpanzerIV> References: <20190905143118.GP2349@hirez.programming.kicks-ass.net> <20190905121101.60c78422@oasis.local.home> <87k1acz5rx.fsf@linutronix.de> <20190918012546.GA12090@jagdpanzerIV> <20190917220849.17a1226a@oasis.local.home> <20190918023654.GB15380@jagdpanzerIV> <20190918051933.GA220683@jagdpanzerIV> <87h85anj85.fsf@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <87h85anj85.fsf@linutronix.de> User-Agent: Mutt/1.12.1 (2019-06-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On (09/18/19 09:42), John Ogness wrote: > > It's going to be a bit harder when we have per-console kthread. > > Each console has its own iterator. This iterators will need to advance, > regardless if the message was printed via write() or write_atomic(). Great. ->atomic_write() path will make sure that kthread is parked or will those compete for uart port? -ss