Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752451AbbGWGuw (ORCPT ); Thu, 23 Jul 2015 02:50:52 -0400 Received: from e28smtp05.in.ibm.com ([122.248.162.5]:45464 "EHLO e28smtp05.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751000AbbGWGuo (ORCPT ); Thu, 23 Jul 2015 02:50:44 -0400 X-Helo: d28dlp03.in.ibm.com X-MailFrom: shilpa.bhat@linux.vnet.ibm.com X-RcptTo: linux-pm@vger.kernel.org From: Shilpasri G Bhat To: rafael.j.wysocki@intel.com Cc: trenn@suse.com, ego@linux.vnet.ibm.com, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Shilpasri G Bhat Subject: [RESEND PATCH] cpupower: Do not change the frequency of offline cpu Date: Thu, 23 Jul 2015 12:20:27 +0530 Message-Id: <1437634227-12555-1-git-send-email-shilpa.bhat@linux.vnet.ibm.com> X-Mailer: git-send-email 1.9.3 In-Reply-To: <1437553249-25400-1-git-send-email-shilpa.bhat@linux.vnet.ibm.com> References: <1437553249-25400-1-git-send-email-shilpa.bhat@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 15072306-0017-0000-0000-000006508682 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1303 Lines: 44 Check if the cpu is online before changing the frequency/governor of the cpu. Reported-by: Pavaman Subramaniyam Signed-off-by: Shilpasri G Bhat Reviewed-by: Gautham R. Shenoy Acked-by: Thomas Renninger --- Included Reported-by tag tools/power/cpupower/utils/cpufreq-set.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tools/power/cpupower/utils/cpufreq-set.c b/tools/power/cpupower/utils/cpufreq-set.c index f656e58..4e21357 100644 --- a/tools/power/cpupower/utils/cpufreq-set.c +++ b/tools/power/cpupower/utils/cpufreq-set.c @@ -17,6 +17,7 @@ #include "cpufreq.h" #include "helpers/helpers.h" +#include "helpers/sysfs.h" #define NORM_FREQ_LEN 32 @@ -318,6 +319,9 @@ int cmd_freq_set(int argc, char **argv) cpufreq_cpu_exists(cpu)) continue; + if (sysfs_is_cpu_online(cpu) != 1) + continue; + printf(_("Setting cpu: %d\n"), cpu); ret = do_one_cpu(cpu, &new_pol, freq, policychange); if (ret) { -- 1.9.3 -- 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/