From: Viresh Kumar Date: Tue, 6 Jan 2015 15:39:15 +0000 (+0530) Subject: cpufreq: stats: drop unnecessary locking X-Git-Tag: fixes-v4.0-rc1~160^2~1^2~12 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=490285c65e2398a533035dd9d75cb606a61ea39a;p=pandora-kernel.git cpufreq: stats: drop unnecessary locking There is no possibility of any race on updating last_index, trans_table or total_trans as these are updated only by cpufreq_stat_notifier_trans() which will be called sequentially. The only place where locking is still relevant is: cpufreq_stats_update(), which updates time_in_state and last_time. This can be called by two thread in parallel, that may result in races. The two threads being: - sysfs read of time_in_state - and frequency transition that calls cpufreq_stat_notifier_trans(). Remove locking from the first case mentioned above. Signed-off-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- Reading git-diff-tree failed