diff options
| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-02-07 18:01:31 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-03-09 16:40:53 +0300 |
| commit | 2bb8d94fb03f808022c620f54b602a1e26d5cbac (patch) | |
| tree | 9b73be310729f138d4c47e3e51b707144c85aa21 /drivers/cpufreq/cpufreq_governor.h | |
| parent | 9be4fd2c7723a3057b0b39676fe4c8d5fd7118a4 (diff) | |
| download | linux-2bb8d94fb03f808022c620f54b602a1e26d5cbac.tar.xz | |
cpufreq: governor: Use common mutex for dbs_data protection
Every governor relying on the common code in cpufreq_governor.c
has to provide its own mutex in struct common_dbs_data. However,
there actually is no need to have a separate mutex per governor
for this purpose, they may be using the same global mutex just
fine. Accordingly, introduce a single common mutex for that and
drop the mutex field from struct common_dbs_data.
That at least will ensure that the mutex is always present and
initialized regardless of what the particular governors do.
Another benefit is that the common code does not need a pointer to
a governor-related structure to get to the mutex which sometimes
helps.
Finally, it makes the code generally easier to follow.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Saravana Kannan <skannan@codeaurora.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Diffstat (limited to 'drivers/cpufreq/cpufreq_governor.h')
| -rw-r--r-- | drivers/cpufreq/cpufreq_governor.h | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/drivers/cpufreq/cpufreq_governor.h b/drivers/cpufreq/cpufreq_governor.h index 541777192dbc..a9df62e87fcb 100644 --- a/drivers/cpufreq/cpufreq_governor.h +++ b/drivers/cpufreq/cpufreq_governor.h @@ -228,11 +228,6 @@ struct common_dbs_data { /* Governor specific ops, see below */ void *gov_ops; - - /* - * Protects governor's data (struct dbs_data and struct common_dbs_data) - */ - struct mutex mutex; }; /* Governor Per policy data */ @@ -277,6 +272,7 @@ static ssize_t show_sampling_rate_min_gov_pol \ return sprintf(buf, "%u\n", dbs_data->min_sampling_rate); \ } +extern struct mutex dbs_data_mutex; extern struct mutex cpufreq_governor_lock; void dbs_check_cpu(struct dbs_data *dbs_data, int cpu); int cpufreq_governor_dbs(struct cpufreq_policy *policy, |