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>
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@ -130,15 +130,18 @@ static struct cpuidle_monitor *cpuidle_register(void)
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{
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int num;
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char *tmp;
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int this_cpu;
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this_cpu = sched_getcpu();
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/* Assume idle state count is the same for all CPUs */
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cpuidle_sysfs_monitor.hw_states_num = cpuidle_state_count(0);
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cpuidle_sysfs_monitor.hw_states_num = cpuidle_state_count(this_cpu);
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if (cpuidle_sysfs_monitor.hw_states_num <= 0)
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return NULL;
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for (num = 0; num < cpuidle_sysfs_monitor.hw_states_num; num++) {
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tmp = cpuidle_state_name(0, num);
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tmp = cpuidle_state_name(this_cpu, num);
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if (tmp == NULL)
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continue;
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@ -146,7 +149,7 @@ static struct cpuidle_monitor *cpuidle_register(void)
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strncpy(cpuidle_cstates[num].name, tmp, CSTATE_NAME_LEN - 1);
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free(tmp);
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tmp = cpuidle_state_desc(0, num);
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tmp = cpuidle_state_desc(this_cpu, num);
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if (tmp == NULL)
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continue;
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strncpy(cpuidle_cstates[num].desc, tmp, CSTATE_DESC_LEN - 1);
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