Commit 2e5e8fd1 authored Jul 23, 2015 by Shilpasri G Bhat Committed by Rafael J. Wysocki Jul 23, 2015

cpupower: Do not change the frequency of offline cpu



Check if the cpu is online before changing the frequency/governor of
the cpu.

Reported-by: Pavaman Subramaniyam <pavsubra@linux.vnet.ibm.com>
Signed-off-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com>
Reviewed-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
Acked-by: Thomas Renninger <trenn@suse.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

parent 52721d9d

tools/power/cpupower/utils/cpufreq-set.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -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) {