From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935130AbaGROOX (ORCPT ); Fri, 18 Jul 2014 10:14:23 -0400 Received: from mail-ig0-f181.google.com ([209.85.213.181]:50325 "EHLO mail-ig0-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935096AbaGROOU (ORCPT ); Fri, 18 Jul 2014 10:14:20 -0400 From: Alex Elder To: akpm@linux-foundation.org Cc: kay@vrfy.org, pmladek@suse.cz, bp@suse.de, john.stultz@linaro.org, jack@suse.cz, linux-kernel@vger.kernel.org Subject: [PATCH v3 1/7] printk: report dropped messages on separate line Date: Fri, 18 Jul 2014 09:14:13 -0500 Message-Id: <1405692859-32500-2-git-send-email-elder@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1405692859-32500-1-git-send-email-elder@linaro.org> References: <1405692859-32500-1-git-send-email-elder@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org It is possible for the log to be filled too quickly for the consoles to be able to keep up. This is detected in console_unlock(), and when it occurs, a message is printed on the console. When reviewing some nearby code, Petr Mládek suggested it might be nicer if this message were placed on a separate line. This patch implements that suggestion. Suggested-by: Petr Mládek Signed-off-by: Alex Elder --- kernel/printk/printk.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c index 13e839d..bed8f09 100644 --- a/kernel/printk/printk.c +++ b/kernel/printk/printk.c @@ -2142,9 +2142,10 @@ again: } if (console_seq < log_first_seq) { - len = sprintf(text, "** %u printk messages dropped ** ", + len = sprintf(text, + "%s** %llu printk messages dropped **\n", + (console_prev & LOG_CONT) ? "\n" : "", (unsigned)(log_first_seq - console_seq)); - /* messages are gone, move to first one */ console_seq = log_first_seq; console_idx = log_first_idx; -- 1.9.1