From: Junjie Wu Date: Mon, 6 Apr 2015 18:16:45 +0000 (-0700) Subject: cpufreq: interactive: Don't set floor_validate_time during boost X-Git-Tag: firefly_0821_release~2958^2~245 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=16e989d788451c5ed3fb0e0a4dd9ee84de23d616;p=firefly-linux-kernel-4.4.55.git cpufreq: interactive: Don't set floor_validate_time during boost Frequency selection algorithm guarantees its chosen frequency is not lower than hispeed_freq as long as boost is enabled. Setting floor_freq and floor_validate_time during boost could block CPU frequency from going below hispeed_freq even after boostpulse_duration expires, if min_sample_time is higher than boostpulse_duration. This conflicts with the intention of commit de091367ead15b6e95dd1d0743a18f0da5a07ee5 (cpufreq: interactive: specify duration of CPU speed boost pulse) to allow CPU to ramp down immediately after boost expires. It also makes boost behavior inconsistent since it depends on min_sample_time. Avoid setting floor_freq and floor_validate_time when boost starts. Change-Id: I12852998af46cfbfaf8661eb5e8d5301b6f631e7 Signed-off-by: Junjie Wu --- diff --git a/drivers/cpufreq/cpufreq_interactive.c b/drivers/cpufreq/cpufreq_interactive.c index 6b3facdf5ba2..49f206e48aa3 100644 --- a/drivers/cpufreq/cpufreq_interactive.c +++ b/drivers/cpufreq/cpufreq_interactive.c @@ -609,14 +609,6 @@ static void cpufreq_interactive_boost(struct cpufreq_interactive_tunables *tunab ktime_to_us(ktime_get()); anyboost = 1; } - - /* - * Set floor freq and (re)start timer for when last - * validated. - */ - - pcpu->floor_freq = tunables->hispeed_freq; - pcpu->floor_validate_time = ktime_to_us(ktime_get()); spin_unlock_irqrestore(&pcpu->target_freq_lock, flags[1]); }