aboutsummaryrefslogtreecommitdiffstats
path: root/tools/power/cpupower/utils/idle_monitor
diff options
context:
space:
mode:
authorAbhishek Goel <huntbag@linux.vnet.ibm.com>2017-11-15 14:10:02 +0530
committerShuah Khan <shuahkh@osg.samsung.com>2017-11-15 08:37:42 -0700
commitdbdc468f35ee827cab2753caa1c660bdb832243a (patch)
tree009fbaa59b5cde86d28b3fefa9d370dc2ef5e7b4 /tools/power/cpupower/utils/idle_monitor
parentcpupowerutils: bench - Fix cpu online check (diff)
downloadlinux-dev-dbdc468f35ee827cab2753caa1c660bdb832243a.tar.xz
linux-dev-dbdc468f35ee827cab2753caa1c660bdb832243a.zip
cpupower : Fix cpupower working when cpu0 is offline
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 <huntbag@linux.vnet.ibm.com> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Diffstat (limited to 'tools/power/cpupower/utils/idle_monitor')
-rw-r--r--tools/power/cpupower/utils/idle_monitor/cpuidle_sysfs.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/tools/power/cpupower/utils/idle_monitor/cpuidle_sysfs.c b/tools/power/cpupower/utils/idle_monitor/cpuidle_sysfs.c
index 1b5da0066ebf..5b3205f16217 100644
--- 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_register(void)
{
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_register(void)
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);