joy/android_kernel_sony_sdm845
Watch
1
Fork
You've already forked android_kernel_sony_sdm845
 0
Code Issues Pull requests Projects Releases Wiki Activity

PM / devfreq: bw_hwmon: Delete "low power mode" feature

Browse source 
This feature didn't really give any power savings when tested on multiple
platforms. The tunables that come with this feature just make the
configuration of normal io_percent unnecessarily confusing. So, delete the
unused feature and the corresponding tunables.

Change-Id: I4a5ac4e627aa801fd6804eb3ad5672057b1ebf56
Signed-off-by: Saravana Kannan <skannan@codeaurora.org>
This commit is contained in:
Saravana Kannan 2017-10-26 15:08:28 -07:00
commit 8b71d22c56
1 changed files with 1 additions and 25 deletions
Download patch file Download diff file Expand all files Collapse all files

26
drivers/devfreq/governor_bw_hwmon.c
View file

@ -48,9 +48,6 @@ struct hwmon_node {
unsigned int hyst_trigger_count;
unsigned int hyst_length;
unsigned int idle_mbps;
unsigned int low_power_ceil_mbps;
unsigned int low_power_io_percent;
unsigned int low_power_delay;
unsigned int mbps_zones[NUM_MBPS_ZONES];
unsigned long prev_ab;
@ -65,7 +62,6 @@ struct hwmon_node {
unsigned long hyst_mbps;
unsigned long hyst_trig_win;
unsigned long hyst_en;
unsigned long above_low_power;
unsigned long prev_req;
unsigned int wake;
unsigned int down_cnt;
@ -317,7 +313,7 @@ static unsigned long get_bw_and_set_irq(struct hwmon_node *node,
unsigned long meas_mbps_zone;
unsigned long hist_lo_tol, hyst_lo_tol;
struct bw_hwmon *hw = node->hw;
unsigned int new_bw, io_percent;
unsigned int new_bw, io_percent = node->io_percent;
ktime_t ts;
unsigned int ms = 0;
@ -353,17 +349,6 @@ static unsigned long get_bw_and_set_irq(struct hwmon_node *node,
node->hist_mem--;
}
/* Keep track of whether we are in low power mode consistently. */
if (meas_mbps > node->low_power_ceil_mbps)
node->above_low_power = node->low_power_delay;
if (node->above_low_power)
node->above_low_power--;
if (node->above_low_power)
io_percent = node->io_percent;
else
io_percent = node->low_power_io_percent;
/*
* The AB value that corresponds to the lowest mbps zone greater than
* or equal to the "frequency" the current measurement will pick.
@ -785,9 +770,6 @@ gov_attr(hist_memory, 0U, 90U);
gov_attr(hyst_trigger_count, 0U, 90U);
gov_attr(hyst_length, 0U, 90U);
gov_attr(idle_mbps, 0U, 2000U);
gov_attr(low_power_ceil_mbps, 0U, 2500U);
gov_attr(low_power_io_percent, 1U, 100U);
gov_attr(low_power_delay, 1U, 60U);
gov_list_attr(mbps_zones, NUM_MBPS_ZONES, 0U, UINT_MAX);
static struct attribute *dev_attr[] = {
@ -804,9 +786,6 @@ static struct attribute *dev_attr[] = {
&dev_attr_hyst_trigger_count.attr,
&dev_attr_hyst_length.attr,
&dev_attr_idle_mbps.attr,
&dev_attr_low_power_ceil_mbps.attr,
&dev_attr_low_power_io_percent.attr,
&dev_attr_low_power_delay.attr,
&dev_attr_mbps_zones.attr,
&dev_attr_throttle_adj.attr,
NULL,
@ -940,9 +919,6 @@ int register_bw_hwmon(struct device *dev, struct bw_hwmon *hwmon)
node->guard_band_mbps = 100;
node->decay_rate = 90;
node->io_percent = 16;
node->low_power_ceil_mbps = 0;
node->low_power_io_percent = 16;
node->low_power_delay = 60;
node->bw_step = 190;
node->sample_ms = 50;
node->up_scale = 0;