From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755616AbZIUJG2 (ORCPT ); Mon, 21 Sep 2009 05:06:28 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755464AbZIUJG0 (ORCPT ); Mon, 21 Sep 2009 05:06:26 -0400 Received: from mtagate3.de.ibm.com ([195.212.17.163]:52957 "EHLO mtagate3.de.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754065AbZIUJGZ (ORCPT ); Mon, 21 Sep 2009 05:06:25 -0400 Date: Mon, 21 Sep 2009 11:06:27 +0200 From: Heiko Carstens To: Ingo Molnar , Andrew Morton , Oleg Nesterov , Peter Zijlstra Cc: linux-kernel@vger.kernel.org Subject: [PATCH] Always show Cpus_allowed field in /proc//status. Message-ID: <20090921090627.GD4649@osiris.boeblingen.de.ibm.com> References: <20090921085155.GB4649@osiris.boeblingen.de.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090921085155.GB4649@osiris.boeblingen.de.ibm.com> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Subject: [PATCH] Always show Cpus_allowed fields in /proc//status. From: Heiko Carstens The Cpus_allowed fields in /proc//status is currently only shown in case of CONFIG_CPUSETS. However their contents are also useful for the !CONFIG_CPUSETS case. So change the current behaviour and always show these fields. Signed-off-by: Heiko Carstens --- fs/proc/array.c | 11 +++++++++++ kernel/cpuset.c | 8 +------- 2 files changed, 12 insertions(+), 7 deletions(-) Index: linux-2.6/fs/proc/array.c =================================================================== --- linux-2.6.orig/fs/proc/array.c +++ linux-2.6/fs/proc/array.c @@ -321,6 +321,16 @@ static inline void task_context_switch_c p->nivcsw); } +void task_cpus_allowed(struct seq_file *m, struct task_struct *task) +{ + seq_printf(m, "Cpus_allowed:\t"); + seq_cpumask(m, &task->cpus_allowed); + seq_printf(m, "\n"); + seq_printf(m, "Cpus_allowed_list:\t"); + seq_cpumask_list(m, &task->cpus_allowed); + seq_printf(m, "\n"); +} + int proc_pid_status(struct seq_file *m, struct pid_namespace *ns, struct pid *pid, struct task_struct *task) { @@ -335,6 +345,7 @@ int proc_pid_status(struct seq_file *m, } task_sig(m, task); task_cap(m, task); + task_cpus_allowed(m, task); cpuset_task_status_allowed(m, task); #if defined(CONFIG_S390) task_show_regs(m, task); Index: linux-2.6/kernel/cpuset.c =================================================================== --- linux-2.6.orig/kernel/cpuset.c +++ linux-2.6/kernel/cpuset.c @@ -2499,15 +2499,9 @@ const struct file_operations proc_cpuset }; #endif /* CONFIG_PROC_PID_CPUSET */ -/* Display task cpus_allowed, mems_allowed in /proc//status file. */ +/* Display task mems_allowed in /proc//status file. */ void cpuset_task_status_allowed(struct seq_file *m, struct task_struct *task) { - seq_printf(m, "Cpus_allowed:\t"); - seq_cpumask(m, &task->cpus_allowed); - seq_printf(m, "\n"); - seq_printf(m, "Cpus_allowed_list:\t"); - seq_cpumask_list(m, &task->cpus_allowed); - seq_printf(m, "\n"); seq_printf(m, "Mems_allowed:\t"); seq_nodemask(m, &task->mems_allowed); seq_printf(m, "\n");