diff options
| author | Dave Jones <davej@redhat.com> | 2005-05-31 19:03:50 -0700 |
|---|---|---|
| committer | Dave Jones <davej@redhat.com> | 2005-05-31 19:03:50 -0700 |
| commit | e131832ca7d3a3e5f9c7624bb310a7747dc2b57c (patch) | |
| tree | 35772287945e5ab2b7837ee501a7790ee77f99f4 /drivers/cpufreq | |
| parent | c29f1403098135bdef75b190a5037db514701031 (diff) | |
| download | lwn-e131832ca7d3a3e5f9c7624bb310a7747dc2b57c.tar.gz lwn-e131832ca7d3a3e5f9c7624bb310a7747dc2b57c.zip | |
[CPUFREQ] ondemand governor default sampling downfactor as 1
[PATCH] [5/5] ondemand governor default sampling downfactor as 1
Make default sampling downfactor 1.
This works better with earlier auto downscaling change in ondemand governor.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
Diffstat (limited to 'drivers/cpufreq')
| -rw-r--r-- | drivers/cpufreq/cpufreq_ondemand.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c index 8bc38ab96400..c1fc9c62bb51 100644 --- a/drivers/cpufreq/cpufreq_ondemand.c +++ b/drivers/cpufreq/cpufreq_ondemand.c @@ -51,7 +51,8 @@ static unsigned int def_sampling_rate; #define MIN_SAMPLING_RATE (def_sampling_rate / 2) #define MAX_SAMPLING_RATE (500 * def_sampling_rate) #define DEF_SAMPLING_RATE_LATENCY_MULTIPLIER (1000) -#define DEF_SAMPLING_DOWN_FACTOR (10) +#define DEF_SAMPLING_DOWN_FACTOR (1) +#define MAX_SAMPLING_DOWN_FACTOR (10) #define TRANSITION_LATENCY_LIMIT (10 * 1000) static void do_dbs_timer(void *data); @@ -129,6 +130,9 @@ static ssize_t store_sampling_down_factor(struct cpufreq_policy *unused, if (ret != 1 ) return -EINVAL; + if (input > MAX_SAMPLING_DOWN_FACTOR || input < 1) + return -EINVAL; + down(&dbs_sem); dbs_tuners_ins.sampling_down_factor = input; up(&dbs_sem); |