30 May
2014
30 May
'14
3:50 p.m.
Hi,
I am looking at in cpufreq.c
__cpufreq_governor(policy, CPUFREQ_GOV_STOP); up_write(&policy->rwsem); __cpufreq_governor(policy, CPUFREQ_GOV_POLICY_EXIT); down_write(&policy->rwsem);
Why do we need to unlock the lock before calling CPUFREQ_GOV_POLICY_EXIT.
Wont this result in a race condition when 2 cpus are calling policy exit, one after another during governor switch?
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Regards,
Sriram