From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:57114 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752338AbeBANMY (ORCPT ); Thu, 1 Feb 2018 08:12:24 -0500 Subject: Patch "cpupower : Fix cpupower working when cpu0 is offline" has been added to the 4.14-stable tree To: huntbag@linux.vnet.ibm.com, alexander.levin@verizon.com, gregkh@linuxfoundation.org, shuahkh@osg.samsung.com Cc: , From: Date: Thu, 01 Feb 2018 14:12:02 +0100 Message-ID: <151749072253225@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled cpupower : Fix cpupower working when cpu0 is offline to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: cpupower-fix-cpupower-working-when-cpu0-is-offline.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From foo@baz Thu Feb 1 13:45:42 CET 2018 From: Abhishek Goel Date: Wed, 15 Nov 2017 14:10:02 +0530 Subject: cpupower : Fix cpupower working when cpu0 is offline From: Abhishek Goel [ Upstream commit dbdc468f35ee827cab2753caa1c660bdb832243a ] cpuidle_monitor used to assume that cpu0 is always online which is not a valid assumption on POWER machines. This patch fixes this by getting the cpu on which the current thread is running, instead of always using cpu0 for monitoring which may not be online. Signed-off-by: Abhishek Goel Signed-off-by: Shuah Khan Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- tools/power/cpupower/utils/idle_monitor/cpuidle_sysfs.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) --- a/tools/power/cpupower/utils/idle_monitor/cpuidle_sysfs.c +++ b/tools/power/cpupower/utils/idle_monitor/cpuidle_sysfs.c @@ -130,15 +130,18 @@ static struct cpuidle_monitor *cpuidle_r { int num; char *tmp; + int this_cpu; + + this_cpu = sched_getcpu(); /* Assume idle state count is the same for all CPUs */ - cpuidle_sysfs_monitor.hw_states_num = cpuidle_state_count(0); + cpuidle_sysfs_monitor.hw_states_num = cpuidle_state_count(this_cpu); if (cpuidle_sysfs_monitor.hw_states_num <= 0) return NULL; for (num = 0; num < cpuidle_sysfs_monitor.hw_states_num; num++) { - tmp = cpuidle_state_name(0, num); + tmp = cpuidle_state_name(this_cpu, num); if (tmp == NULL) continue; @@ -146,7 +149,7 @@ static struct cpuidle_monitor *cpuidle_r strncpy(cpuidle_cstates[num].name, tmp, CSTATE_NAME_LEN - 1); free(tmp); - tmp = cpuidle_state_desc(0, num); + tmp = cpuidle_state_desc(this_cpu, num); if (tmp == NULL) continue; strncpy(cpuidle_cstates[num].desc, tmp, CSTATE_DESC_LEN - 1); Patches currently in stable-queue which might be from huntbag@linux.vnet.ibm.com are queue-4.14/cpupowerutils-bench-fix-cpu-online-check.patch queue-4.14/cpupower-fix-cpupower-working-when-cpu0-is-offline.patch