diff options
| author | Todd Poynor <toddpoynor@google.com> | 2012-04-20 13:18:32 -0700 |
|---|---|---|
| committer | John Stultz <john.stultz@linaro.org> | 2016-02-16 13:52:37 -0800 |
| commit | 1c31ed48a26e4cd4220ee1d4129ab947666f2e03 (patch) | |
| tree | 7d3566c88c00060402d581558fe881e79eefc01f | |
| parent | 759fcdd8d72529e83bdf3eb261d69aa85fcf5bda (diff) | |
cpufreq: interactive: Separate speed target revalidate time and initial set time
Allow speed drop after min_sample_time elapses from last time
the current speed was last re-validated as appropriate for
current load / input boost.
Allow speed bump after min_sample_time (or above_hispeed_delay)
elapses from the time the current speed was originally set.
Change-Id: Ic25687a7a53d25e6544c30c47d7ab6f27a47bee8
Signed-off-by: Todd Poynor <toddpoynor@google.com>
| -rw-r--r-- | drivers/cpufreq/cpufreq_interactive.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/drivers/cpufreq/cpufreq_interactive.c b/drivers/cpufreq/cpufreq_interactive.c index b78174fd8cff..083f79032b45 100644 --- a/drivers/cpufreq/cpufreq_interactive.c +++ b/drivers/cpufreq/cpufreq_interactive.c @@ -46,6 +46,8 @@ struct cpufreq_interactive_cpuinfo { int idling; u64 target_set_time; u64 target_set_time_in_idle; + u64 target_validate_time; + u64 target_validate_time_in_idle; struct cpufreq_policy *policy; struct cpufreq_frequency_table *freq_table; unsigned int target_freq; @@ -208,10 +210,10 @@ static void cpufreq_interactive_timer(unsigned long data) /* * Do not scale down unless we have been at this frequency for the - * minimum sample time. + * minimum sample time since last validated. */ if (new_freq < pcpu->target_freq) { - if (pcpu->timer_run_time - pcpu->target_set_time + if (pcpu->timer_run_time - pcpu->target_validate_time < min_sample_time) { trace_cpufreq_interactive_notyet(data, cpu_load, pcpu->target_freq, new_freq); @@ -219,8 +221,8 @@ static void cpufreq_interactive_timer(unsigned long data) } } - pcpu->target_set_time_in_idle = now_idle; - pcpu->target_set_time = pcpu->timer_run_time; + pcpu->target_validate_time_in_idle = now_idle; + pcpu->target_validate_time = pcpu->timer_run_time; if (pcpu->target_freq == new_freq) { trace_cpufreq_interactive_already(data, cpu_load, @@ -230,6 +232,8 @@ static void cpufreq_interactive_timer(unsigned long data) trace_cpufreq_interactive_target(data, cpu_load, pcpu->target_freq, new_freq); + pcpu->target_set_time_in_idle = now_idle; + pcpu->target_set_time = pcpu->timer_run_time; if (new_freq < pcpu->target_freq) { pcpu->target_freq = new_freq; @@ -614,6 +618,10 @@ static int cpufreq_governor_interactive(struct cpufreq_policy *policy, pcpu->target_set_time_in_idle = get_cpu_idle_time_us(j, &pcpu->target_set_time); + pcpu->target_validate_time = + pcpu->target_set_time; + pcpu->target_validate_time_in_idle = + pcpu->target_set_time_in_idle; pcpu->governor_enabled = 1; smp_wmb(); } |