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authorViresh Kumar <viresh.kumar@linaro.org>2016-02-09 06:31:32 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-03-09 16:40:58 +0300
commitff4b17895e3166084c76ae703cb1c757bcc59799 (patch)
tree8985a281466043f7777eb303917c1ce820835260 /drivers/cpufreq/cpufreq_conservative.c
parentd0684d3b8934cfb8171755cdb1fc87f4c0335655 (diff)
downloadlinux-ff4b17895e3166084c76ae703cb1c757bcc59799.tar.xz
cpufreq: governor: Move common tunables to 'struct dbs_data'
There are a few common tunables shared between the ondemand and conservative governors. Move them to struct dbs_data to simplify code. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Tested-by: Juri Lelli <juri.lelli@arm.com> Tested-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com> [ rjw: Changelog ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq/cpufreq_conservative.c')
-rw-r--r--drivers/cpufreq/cpufreq_conservative.c38
1 files changed, 17 insertions, 21 deletions
diff --git a/drivers/cpufreq/cpufreq_conservative.c b/drivers/cpufreq/cpufreq_conservative.c
index a69eb7eae7ec..4f640b028c94 100644
--- a/drivers/cpufreq/cpufreq_conservative.c
+++ b/drivers/cpufreq/cpufreq_conservative.c
@@ -60,7 +60,7 @@ static void cs_check_cpu(int cpu, unsigned int load)
return;
/* Check for frequency increase */
- if (load > cs_tuners->up_threshold) {
+ if (load > dbs_data->up_threshold) {
dbs_info->down_skip = 0;
/* if we are already at full speed then break out early */
@@ -78,7 +78,7 @@ static void cs_check_cpu(int cpu, unsigned int load)
}
/* if sampling_down_factor is active break out early */
- if (++dbs_info->down_skip < cs_tuners->sampling_down_factor)
+ if (++dbs_info->down_skip < dbs_data->sampling_down_factor)
return;
dbs_info->down_skip = 0;
@@ -107,10 +107,9 @@ static unsigned int cs_dbs_timer(struct cpufreq_policy *policy)
{
struct policy_dbs_info *policy_dbs = policy->governor_data;
struct dbs_data *dbs_data = policy_dbs->dbs_data;
- struct cs_dbs_tuners *cs_tuners = dbs_data->tuners;
dbs_check_cpu(policy);
- return delay_for_sampling_rate(cs_tuners->sampling_rate);
+ return delay_for_sampling_rate(dbs_data->sampling_rate);
}
static int dbs_cpufreq_notifier(struct notifier_block *nb, unsigned long val,
@@ -126,7 +125,6 @@ static struct dbs_governor cs_dbs_gov;
static ssize_t store_sampling_down_factor(struct dbs_data *dbs_data,
const char *buf, size_t count)
{
- struct cs_dbs_tuners *cs_tuners = dbs_data->tuners;
unsigned int input;
int ret;
ret = sscanf(buf, "%u", &input);
@@ -134,14 +132,13 @@ static ssize_t store_sampling_down_factor(struct dbs_data *dbs_data,
if (ret != 1 || input > MAX_SAMPLING_DOWN_FACTOR || input < 1)
return -EINVAL;
- cs_tuners->sampling_down_factor = input;
+ dbs_data->sampling_down_factor = input;
return count;
}
static ssize_t store_sampling_rate(struct dbs_data *dbs_data, const char *buf,
size_t count)
{
- struct cs_dbs_tuners *cs_tuners = dbs_data->tuners;
unsigned int input;
int ret;
ret = sscanf(buf, "%u", &input);
@@ -149,7 +146,7 @@ static ssize_t store_sampling_rate(struct dbs_data *dbs_data, const char *buf,
if (ret != 1)
return -EINVAL;
- cs_tuners->sampling_rate = max(input, dbs_data->min_sampling_rate);
+ dbs_data->sampling_rate = max(input, dbs_data->min_sampling_rate);
return count;
}
@@ -164,7 +161,7 @@ static ssize_t store_up_threshold(struct dbs_data *dbs_data, const char *buf,
if (ret != 1 || input > 100 || input <= cs_tuners->down_threshold)
return -EINVAL;
- cs_tuners->up_threshold = input;
+ dbs_data->up_threshold = input;
return count;
}
@@ -178,7 +175,7 @@ static ssize_t store_down_threshold(struct dbs_data *dbs_data, const char *buf,
/* cannot be lower than 11 otherwise freq will not fall */
if (ret != 1 || input < 11 || input > 100 ||
- input >= cs_tuners->up_threshold)
+ input >= dbs_data->up_threshold)
return -EINVAL;
cs_tuners->down_threshold = input;
@@ -188,7 +185,6 @@ static ssize_t store_down_threshold(struct dbs_data *dbs_data, const char *buf,
static ssize_t store_ignore_nice_load(struct dbs_data *dbs_data,
const char *buf, size_t count)
{
- struct cs_dbs_tuners *cs_tuners = dbs_data->tuners;
unsigned int input, j;
int ret;
@@ -199,10 +195,10 @@ static ssize_t store_ignore_nice_load(struct dbs_data *dbs_data,
if (input > 1)
input = 1;
- if (input == cs_tuners->ignore_nice_load) /* nothing to do */
+ if (input == dbs_data->ignore_nice_load) /* nothing to do */
return count;
- cs_tuners->ignore_nice_load = input;
+ dbs_data->ignore_nice_load = input;
/* we need to re-evaluate prev_cpu_idle */
for_each_online_cpu(j) {
@@ -210,7 +206,7 @@ static ssize_t store_ignore_nice_load(struct dbs_data *dbs_data,
dbs_info = &per_cpu(cs_cpu_dbs_info, j);
dbs_info->cdbs.prev_cpu_idle = get_cpu_idle_time(j,
&dbs_info->cdbs.prev_cpu_wall, 0);
- if (cs_tuners->ignore_nice_load)
+ if (dbs_data->ignore_nice_load)
dbs_info->cdbs.prev_cpu_nice =
kcpustat_cpu(j).cpustat[CPUTIME_NICE];
}
@@ -239,12 +235,12 @@ static ssize_t store_freq_step(struct dbs_data *dbs_data, const char *buf,
return count;
}
-show_store_one(cs, sampling_rate);
-show_store_one(cs, sampling_down_factor);
-show_store_one(cs, up_threshold);
show_store_one(cs, down_threshold);
-show_store_one(cs, ignore_nice_load);
show_store_one(cs, freq_step);
+show_store_one_common(cs, sampling_rate);
+show_store_one_common(cs, sampling_down_factor);
+show_store_one_common(cs, up_threshold);
+show_store_one_common(cs, ignore_nice_load);
show_one_common(cs, min_sampling_rate);
gov_sys_pol_attr_rw(sampling_rate);
@@ -299,11 +295,11 @@ static int cs_init(struct dbs_data *dbs_data, bool notify)
return -ENOMEM;
}
- tuners->up_threshold = DEF_FREQUENCY_UP_THRESHOLD;
tuners->down_threshold = DEF_FREQUENCY_DOWN_THRESHOLD;
- tuners->sampling_down_factor = DEF_SAMPLING_DOWN_FACTOR;
- tuners->ignore_nice_load = 0;
tuners->freq_step = DEF_FREQUENCY_STEP;
+ dbs_data->up_threshold = DEF_FREQUENCY_UP_THRESHOLD;
+ dbs_data->sampling_down_factor = DEF_SAMPLING_DOWN_FACTOR;
+ dbs_data->ignore_nice_load = 0;
dbs_data->tuners = tuners;
dbs_data->min_sampling_rate = MIN_SAMPLING_RATE_RATIO *