Hi Rafael,
On 03/22/2013 01:51 AM, Rafael J. Wysocki wrote:
> This one didn't apply for me to linux-pm.git/bleeding-edge. Care to rebase?
>
> Rafael
Yes, of course.
Bellow the rebased patched against latest linux-pm.git/bleeding-edge.
Thanks,
Stratos
--------------------------8<-------------------------------------------
Use an inline function to evaluate freq_target to avoid duplicate code.
Also, define a macro for the default frequency step.
Signed-off-by: Stratos Karafotis <strat...@semaphore.gr>
---
drivers/cpufreq/cpufreq_conservative.c | 28 ++++++++++++++++------------
1 file changed, 16 insertions(+), 12 deletions(-)
diff --git a/drivers/cpufreq/cpufreq_conservative.c
b/drivers/cpufreq/cpufreq_conservative.c
index fe17bd3..63499c8 100644
--- a/drivers/cpufreq/cpufreq_conservative.c
+++ b/drivers/cpufreq/cpufreq_conservative.c
@@ -29,11 +29,24 @@
/* Conservative governor macros */
#define DEF_FREQUENCY_UP_THRESHOLD (80)
#define DEF_FREQUENCY_DOWN_THRESHOLD (20)
+#define DEF_FREQUENCY_STEP (5)
#define DEF_SAMPLING_DOWN_FACTOR (1)
#define MAX_SAMPLING_DOWN_FACTOR (10)
static DEFINE_PER_CPU(struct cs_cpu_dbs_info_s, cs_cpu_dbs_info);
+static inline unsigned int get_freq_target(struct cs_dbs_tuners *cs_tuners,
+ struct cpufreq_policy *policy)
+{
+ unsigned int freq_target = (cs_tuners->freq_step * policy->max) / 100;
+
+ /* max freq cannot be less than 100. But who knows... */
+ if (unlikely(freq_target == 0))
+ freq_target = DEF_FREQUENCY_STEP;
+
+ return freq_target;
+}
+
/*
* Every sampling_rate, we check, if current idle time is less than 20%
* (default), then we try to increase frequency. Every sampling_rate *
@@ -49,7 +62,6 @@ static void cs_check_cpu(int cpu, unsigned int load)
struct cpufreq_policy *policy = dbs_info->cdbs.cur_policy;
struct dbs_data *dbs_data = policy->governor_data;
struct cs_dbs_tuners *cs_tuners = dbs_data->tuners;
- unsigned int freq_target;
/*
* break out if we 'cannot' reduce the speed as the user might
@@ -66,13 +78,7 @@ static void cs_check_cpu(int cpu, unsigned int load)
if (dbs_info->requested_freq == policy->max)
return;
- freq_target = (cs_tuners->freq_step * policy->max) / 100;
-
- /* max freq cannot be less than 100. But who knows.... */
- if (unlikely(freq_target == 0))
- freq_target = 5;
-
- dbs_info->requested_freq += freq_target;
+ dbs_info->requested_freq += get_freq_target(cs_tuners, policy);
if (dbs_info->requested_freq > policy->max)
dbs_info->requested_freq = policy->max;
@@ -94,9 +100,7 @@ static void cs_check_cpu(int cpu, unsigned int load)
if (policy->cur == policy->min)
return;
- freq_target = (cs_tuners->freq_step * policy->max) / 100;
-
- dbs_info->requested_freq -= freq_target;
+ dbs_info->requested_freq -= get_freq_target(cs_tuners, policy);
if (dbs_info->requested_freq < policy->min)
dbs_info->requested_freq = policy->min;
@@ -323,7 +327,7 @@ static int cs_init(struct dbs_data *dbs_data)
tuners->down_threshold = DEF_FREQUENCY_DOWN_THRESHOLD;
tuners->sampling_down_factor = DEF_SAMPLING_DOWN_FACTOR;
tuners->ignore_nice = 0;
- tuners->freq_step = 5;
+ tuners->freq_step = DEF_FREQUENCY_STEP;
dbs_data->tuners = tuners;
dbs_data->min_sampling_rate = MIN_SAMPLING_RATE_RATIO *
--
1.8.1.4
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