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[RFC,v3,2/5] cpufreq:LAB:cpufreq_governor Adjust cpufreq_governor.[h|c] to support LAB

Message ID 1393928852-22725-3-git-send-email-l.majewski@samsung.com (mailing list archive)
State RFC, archived
Headers show

Commit Message

Lukasz Majewski March 4, 2014, 10:27 a.m. UTC 
Some minor adjustments were needed to support LAB operation in the
cpufreq_governor.[h|c] files.

Most notably, code for proper estimation of the idle time for each CPU is
added here.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
---
 drivers/cpufreq/cpufreq_governor.c |    7 +++++++
 drivers/cpufreq/cpufreq_governor.h |    2 ++
 2 files changed, 9 insertions(+)
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Patch

diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c
index ba43991..99fc3e8 100644
--- a/drivers/cpufreq/cpufreq_governor.c
+++ b/drivers/cpufreq/cpufreq_governor.c
@@ -98,6 +98,13 @@  void dbs_check_cpu(struct dbs_data *dbs_data, int cpu)
 
 		load = 100 * (wall_time - idle_time) / wall_time;
 
+		if (dbs_data->cdata->governor == GOV_LAB) {
+			struct od_cpu_dbs_info_s *od_dbs_info =
+				dbs_data->cdata->get_cpu_dbs_info_s(j);
+
+			od_dbs_info->idle_time = (100 * idle_time) / wall_time;
+		}
+
 		if (load > max_load)
 			max_load = load;
 	}
diff --git a/drivers/cpufreq/cpufreq_governor.h b/drivers/cpufreq/cpufreq_governor.h
index 34b1cf2..82a519f 100644
--- a/drivers/cpufreq/cpufreq_governor.h
+++ b/drivers/cpufreq/cpufreq_governor.h
@@ -152,6 +152,7 @@  struct od_cpu_dbs_info_s {
 	unsigned int freq_lo_jiffies;
 	unsigned int freq_hi_jiffies;
 	unsigned int rate_mult;
+	unsigned int idle_time;
 	unsigned int sample_type:1;
 };
 
@@ -187,6 +188,7 @@  struct common_dbs_data {
 	/* Common across governors */
 	#define GOV_ONDEMAND		0
 	#define GOV_CONSERVATIVE	1
+	#define GOV_LAB                 2
 	int governor;
 	struct attribute_group *attr_group_gov_sys; /* one governor - system */
 	struct attribute_group *attr_group_gov_pol; /* one governor - policy */