diff options
| author | Viresh Kumar <viresh.kumar@linaro.org> | 2013-01-31 21:28:02 +0400 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-02-02 04:02:44 +0400 |
| commit | 4447266b842d27f77b017a59eb9dc38ad7b299f1 (patch) | |
| tree | f8ae835b7ecee18948afabd75633ea7676b6a4ac /drivers/cpufreq/cpufreq_governor.c | |
| parent | 8eeed0956615294200be783bb67d851280b5b1b9 (diff) | |
| download | linux-4447266b842d27f77b017a59eb9dc38ad7b299f1.tar.xz | |
cpufreq: governors: Remove code redundancy between governors
With the inclusion of following patches:
9f4eb10 cpufreq: conservative: call dbs_check_cpu only when necessary
772b4b1 cpufreq: ondemand: call dbs_check_cpu only when necessary
code redundancy between the conservative and ondemand governors is
introduced again, so get rid of it.
[rjw: Changelog]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Tested-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq/cpufreq_governor.c')
| -rw-r--r-- | drivers/cpufreq/cpufreq_governor.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c index 29d6a59b1a15..7aaa9b151940 100644 --- a/drivers/cpufreq/cpufreq_governor.c +++ b/drivers/cpufreq/cpufreq_governor.c @@ -177,6 +177,25 @@ static inline void dbs_timer_exit(struct dbs_data *dbs_data, int cpu) cancel_delayed_work_sync(&cdbs->work); } +/* Will return if we need to evaluate cpu load again or not */ +bool need_load_eval(struct cpu_dbs_common_info *cdbs, + unsigned int sampling_rate) +{ + if (policy_is_shared(cdbs->cur_policy)) { + ktime_t time_now = ktime_get(); + s64 delta_us = ktime_us_delta(time_now, cdbs->time_stamp); + + /* Do nothing if we recently have sampled */ + if (delta_us < (s64)(sampling_rate / 2)) + return false; + else + cdbs->time_stamp = time_now; + } + + return true; +} +EXPORT_SYMBOL_GPL(need_load_eval); + int cpufreq_governor_dbs(struct dbs_data *dbs_data, struct cpufreq_policy *policy, unsigned int event) { |