From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753886AbZKLRVl (ORCPT ); Thu, 12 Nov 2009 12:21:41 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753504AbZKLRVj (ORCPT ); Thu, 12 Nov 2009 12:21:39 -0500 Received: from relay1.sgi.com ([192.48.179.29]:45215 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753495AbZKLRVj (ORCPT ); Thu, 12 Nov 2009 12:21:39 -0500 Message-Id: <20091112172126.739895000@alcatraz.americas.sgi.com> References: <20091112171934.584037000@alcatraz.americas.sgi.com> User-Agent: quilt/0.46-1 Date: Thu, 12 Nov 2009 11:19:41 -0600 From: Mike Travis To: Ingo Molnar , Thomas Gleixner , Andrew Morton Cc: Heiko Carstens , Roland Dreier , Randy Dunlap , Tejun Heo , Andi Kleen , Greg Kroah-Hartman , Yinghai Lu , "H. Peter Anvin" , David Rientjes , Steven Rostedt , Rusty Russell , Hidetoshi Seto , Jack Steiner , Frederic Weisbecker , x86@kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 7/7] x86: Limit number of per cpu TSC sync messages Content-Disposition: inline; filename=limit_tsc_sync_messages Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Limit the number of per cpu TSC sync messages when system is booting to prevent clogging up the console output with repetitious messages. Signed-off-by: Mike Travis --- arch/x86/kernel/tsc_sync.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) --- linux.orig/arch/x86/kernel/tsc_sync.c +++ linux/arch/x86/kernel/tsc_sync.c @@ -118,9 +118,6 @@ return; } - pr_info("checking TSC synchronization [CPU#%d -> CPU#%d]:", - smp_processor_id(), cpu); - /* * Reset it - in case this is a second bootup: */ @@ -142,12 +139,13 @@ cpu_relax(); if (nr_warps) { - printk("\n"); + pr_warning("TSC synchronization [CPU#%d -> CPU#%d]:\n", + smp_processor_id(), cpu); pr_warning("Measured %Ld cycles TSC warp between CPUs, " "turning off TSC clock.\n", max_warp); mark_tsc_unstable("check_tsc_sync_source failed"); } else { - printk(" passed.\n"); + pr_debug("TSC synchronization [CPU#%d -> CPU#%d]: passed\n"); } /* --