Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753962AbZC3Ezl (ORCPT ); Mon, 30 Mar 2009 00:55:41 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751252AbZC3Ez1 (ORCPT ); Mon, 30 Mar 2009 00:55:27 -0400 Received: from e23smtp09.au.ibm.com ([202.81.31.142]:41633 "EHLO e23smtp09.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751110AbZC3Ez0 (ORCPT ); Mon, 30 Mar 2009 00:55:26 -0400 From: Gautham R Shenoy Subject: [PATCH] sched: Print sched_group::__cpu_power in sched_domain_debug. To: linux-kernel@vger.kernel.org Cc: "Ingo Molnar" , Peter Zijlstra , Gautham R Shenoy Date: Mon, 30 Mar 2009 10:25:20 +0530 Message-ID: <20090330045520.2869.24777.stgit@sofia.in.ibm.com> In-Reply-To: <20090330045321.2869.9284.stgit@sofia.in.ibm.com> References: <20090330045321.2869.9284.stgit@sofia.in.ibm.com> User-Agent: StGIT/0.14.2 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1365 Lines: 37 If the user changes the value of the sched_mc/smt_power_savings sysfs tunable, it'll trigger a rebuilding of the whole sched_domain tree, with the SD_POWERSAVINGS_BALANCE flag set at certain levels. As a result, there would be a change in the __cpu_power of sched_groups in the sched_domain hierarchy. Print the __cpu_power values for each sched_group in sched_domain_debug to help verify this change and correlate it with the change in the load-balancing behavior. Signed-off-by: Gautham R Shenoy --- kernel/sched.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/kernel/sched.c b/kernel/sched.c index 706517c..fbac83b 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -7363,7 +7363,8 @@ static int sched_domain_debug_one(struct sched_domain *sd, int cpu, int level, cpumask_or(groupmask, groupmask, sched_group_cpus(group)); cpulist_scnprintf(str, sizeof(str), sched_group_cpus(group)); - printk(KERN_CONT " %s", str); + printk(KERN_CONT " %s (__cpu_power = %d)", str, + group->__cpu_power); group = group->next; } while (group != sd->groups); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/