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authorJacob Tanenbaum <jtanenba@redhat.com>2015-10-22 17:17:05 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2015-11-02 02:28:59 +0100
commit20102ac5bee3c7c1ffff43f220e37328b6fffd16 (patch)
tree811e4750b4ae16145cd7b103cdaf1f2a18c21a4f /tools/power/cpupower/utils/idle_monitor
parentLinux 4.3-rc7 (diff)
downloadlinux-dev-20102ac5bee3c7c1ffff43f220e37328b6fffd16.tar.xz
linux-dev-20102ac5bee3c7c1ffff43f220e37328b6fffd16.zip
cpupower: cpupower monitor reports uninitialized values for offline cpus
[root@hp-dl980g7-02 linux]# cpupower monitor ... 5472| 0| 1|******|******|******|******|| 0.00| 0.00| 0.00| 0.00| 0.00 *is offline 10567| 0| 159|******|******|******|******|| 0.00| 0.00| 0.00| 0.00| 0.00 *is offline 1661206560|859272560| 150|******|******|******|******|| 0.00| 0.00| 0.00| 0.00| 0.00 *is offline 1661206560|943093104| 140|******|******|******|******|| 0.00| 0.00| 0.00| 0.00| 0.00 *is offline because of this cpupower also holds the incorrect value for the number of physical packages in the machine Changed cpupower to initialize the values of an offline cpu's socket and core to -1, warn the user that one or more cpus is/are offline and not print statistics for offline cpus. This fix hides offlined cores where topology cannot be accessed. With a recent kernel patch suggested from Prarit Bhargava it may be possible that soft offlined cores' topology can still be parsed. This patch would then show which cores in which package/socket are offline, when sane toplogoy information is available. Signed-off-by: Jacob Tanenbaum <jtanenba@redhat.com> Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'tools/power/cpupower/utils/idle_monitor')
-rw-r--r--tools/power/cpupower/utils/idle_monitor/cpupower-monitor.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/tools/power/cpupower/utils/idle_monitor/cpupower-monitor.c b/tools/power/cpupower/utils/idle_monitor/cpupower-monitor.c
index c4bae9203a69..05f953f0f0a0 100644
--- a/tools/power/cpupower/utils/idle_monitor/cpupower-monitor.c
+++ b/tools/power/cpupower/utils/idle_monitor/cpupower-monitor.c
@@ -143,6 +143,9 @@ void print_results(int topology_depth, int cpu)
/* Be careful CPUs may got resorted for pkg value do not just use cpu */
if (!bitmask_isbitset(cpus_chosen, cpu_top.core_info[cpu].cpu))
return;
+ if (!cpu_top.core_info[cpu].is_online &&
+ cpu_top.core_info[cpu].pkg == -1)
+ return;
if (topology_depth > 2)
printf("%4d|", cpu_top.core_info[cpu].pkg);
@@ -191,7 +194,8 @@ void print_results(int topology_depth, int cpu)
* It's up to the monitor plug-in to check .is_online, this one
* is just for additional info.
*/
- if (!cpu_top.core_info[cpu].is_online) {
+ if (!cpu_top.core_info[cpu].is_online &&
+ cpu_top.core_info[cpu].pkg != -1) {
printf(_(" *is offline\n"));
return;
} else
@@ -388,6 +392,9 @@ int cmd_monitor(int argc, char **argv)
return EXIT_FAILURE;
}
+ if (!cpu_top.core_info[0].is_online)
+ printf("WARNING: at least one cpu is offline\n");
+
/* Default is: monitor all CPUs */
if (bitmask_isallclear(cpus_chosen))
bitmask_setall(cpus_chosen);