From: Todd Poynor <[email protected]> Allow speed to drop to flooor frequency but not below, don't pin to speed at last boost.
Change-Id: I0147c2b7a2e61ba16820605af6baaf09570be787 Signed-off-by: Todd Poynor <[email protected]> Signed-off-by: Bálint Czobor <[email protected]> --- drivers/cpufreq/cpufreq_interactive.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) diff --git a/drivers/cpufreq/cpufreq_interactive.c b/drivers/cpufreq/cpufreq_interactive.c index 07b7caf..fcd5b1d 100644 --- a/drivers/cpufreq/cpufreq_interactive.c +++ b/drivers/cpufreq/cpufreq_interactive.c @@ -47,10 +47,11 @@ struct cpufreq_interactive_cpuinfo { int idling; u64 target_set_time; u64 target_set_time_in_idle; - u64 target_validate_time; struct cpufreq_policy *policy; struct cpufreq_frequency_table *freq_table; unsigned int target_freq; + unsigned int floor_freq; + u64 floor_validate_time; int governor_enabled; }; @@ -228,10 +229,10 @@ static void cpufreq_interactive_timer(unsigned long data) new_freq = pcpu->freq_table[index].frequency; /* - * Do not scale down unless we have been at this frequency for the - * minimum sample time since last validated. + * Do not scale below floor_freq unless we have been at or above the + * floor frequency for the minimum sample time since last validated. */ - if (new_freq < pcpu->target_freq) { + if (new_freq < pcpu->floor_freq) { if (pcpu->timer_run_time - pcpu->target_validate_time < min_sample_time) { trace_cpufreq_interactive_notyet(data, cpu_load, @@ -240,7 +241,8 @@ static void cpufreq_interactive_timer(unsigned long data) } } - pcpu->target_validate_time = pcpu->timer_run_time; + pcpu->floor_freq = new_freq; + pcpu->floor_validate_time = pcpu->timer_run_time; if (pcpu->target_freq == new_freq) { trace_cpufreq_interactive_already(data, cpu_load, @@ -508,12 +510,12 @@ static void cpufreq_interactive_boost(void) } /* - * Refresh time at which current (possibly being - * boosted) speed last validated (reset timer for - * allowing speed to drop). + * Set floor freq and (re)start timer for when last + * validated. */ - pcpu->target_validate_time = ktime_to_us(ktime_get()); + pcpu->floor_freq = hispeed_freq; + pcpu->floor_validate_time = ktime_to_us(ktime_get()); } spin_unlock_irqrestore(&up_cpumask_lock, flags); @@ -811,7 +813,8 @@ 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->floor_freq = pcpu->target_freq; + pcpu->floor_validate_time = pcpu->target_set_time; pcpu->governor_enabled = 1; smp_wmb(); -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
