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cpufreq: interactive: adjust code and documentation to match

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Change-Id: If59c668d514a29febe5c35404fd9d01df8548eb1
Signed-off-by: Todd Poynor <toddpoynor@google.com>
This commit is contained in:
Todd Poynor
2012-04-17 17:39:34 -07:00
committed by John Stultz
parent 4ca4034e0b
commit 3b14df5083
2 changed files with 16 additions and 6 deletions
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16
Documentation/cpu-freq/governors.txt
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@@ -249,11 +249,21 @@ frequency before ramping down. This is to ensure that the governor has
seen enough historic cpu load data to determine the appropriate
workload. Default is 80000 uS.
go_maxspeed_load: The CPU load at which to ramp to max speed. Default
is 85.
hispeed_freq: An intermediate "hi speed" at which to initially ramp
when CPU load hits the value specified in go_hispeed_load. If load
stays high for the amount of time specified in above_hispeed_delay,
then speed may be bumped higher. Default is maximum speed.
go_hispeed_load: The CPU load at which to ramp to the intermediate "hi
speed". Default is 85%.
above_hispeed_delay: Once speed is set to hispeed_freq, wait for this
long before bumping speed higher in response to continued high load.
Default is 20000 uS.
timer_rate: Sample rate for reevaluating cpu load when the system is
not idle. Default is 30000 uS.
not idle. Default is 20000 uS.
3. The Governor Interface in the CPUfreq Core
=============================================

6
drivers/cpufreq/cpufreq_interactive.c
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@@ -68,19 +68,19 @@ static struct mutex set_speed_lock;
static u64 hispeed_freq;
/* Go to hi speed when CPU load at or above this value. */
#define DEFAULT_GO_HISPEED_LOAD 95
#define DEFAULT_GO_HISPEED_LOAD 85
static unsigned long go_hispeed_load;
/*
* The minimum amount of time to spend at a frequency before we can ramp down.
*/
#define DEFAULT_MIN_SAMPLE_TIME 20 * USEC_PER_MSEC
#define DEFAULT_MIN_SAMPLE_TIME (80 * USEC_PER_MSEC)
static unsigned long min_sample_time;
/*
* The sample rate of the timer used to increase frequency
*/
#define DEFAULT_TIMER_RATE 20 * USEC_PER_MSEC
#define DEFAULT_TIMER_RATE (20 * USEC_PER_MSEC)
static unsigned long timer_rate;
/*