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| author | Viresh Kumar <viresh.kumar@linaro.org> | 2013-07-02 16:36:28 +0530 |
|---|---|---|
| committer | Chanho Park <chanho61.park@samsung.com> | 2014-08-08 15:19:32 +0900 |
| commit | 39086494868ae1d5ec97b87491167b81bdf50a7c (patch) | |
| tree | 9672faf75e0bd041074e680a60edd10c9558fc84 /include/linux | |
| parent | 9cfccbc1368fcda0b35f49ac34ac72210d1e99a4 (diff) | |
| download | linux-3.10-39086494868ae1d5ec97b87491167b81bdf50a7c.tar.gz linux-3.10-39086494868ae1d5ec97b87491167b81bdf50a7c.tar.bz2 linux-3.10-39086494868ae1d5ec97b87491167b81bdf50a7c.zip | |
cpufreq: Fix serialization of frequency transitions
Commit 7c30ed ("cpufreq: make sure frequency transitions are serialized")
interacts poorly with systems that have a single core freqency for all
cores. On such systems we have a single policy for all cores with
several CPUs. When we do a frequency transition the governor calls the
pre and post change notifiers which causes cpufreq_notify_transition()
per CPU. Since the policy is the same for all of them all CPUs after
the first and the warnings added are generated by checking a per-policy
flag the warnings will be triggered for all cores after the first.
Fix this by allowing notifier to be called for n times. Where n is the number of
cpus in policy->cpus.
Change-Id: I5712dde7f992644f9c3ddc8313151f80bea0d877
Reported-and-tested-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/cpufreq.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index e3da73bbcf0..bd1ad374076 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -121,7 +121,7 @@ struct cpufreq_policy { struct list_head policy_list; struct kobject kobj; struct completion kobj_unregister; - bool transition_ongoing; /* Tracks transition status */ + int transition_ongoing; /* Tracks transition status */ }; #define CPUFREQ_ADJUST (0) |