lkml.org 
[lkml]   [2020]   [Oct]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 2/2] thermal: power allocator: estimate sustainable power only once
Date
The sustainable power value might come from the Device Tree or can be
estimated in run time. There is no need to estimate every time when the
governor is called and temperature is high. Instead, store the estimated
value and make it available via standard sysfs interface so it can be
checked from the user-space.

Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
---
drivers/thermal/gov_power_allocator.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/thermal/gov_power_allocator.c b/drivers/thermal/gov_power_allocator.c
index f69fafe486a5..dd59085f38f5 100644
--- a/drivers/thermal/gov_power_allocator.c
+++ b/drivers/thermal/gov_power_allocator.c
@@ -204,6 +204,8 @@ static u32 pid_controller(struct thermal_zone_device *tz,
estimate_pid_constants(tz, sustainable_power,
params->trip_switch_on, control_temp,
true);
+ /* Do the estimation only once and make available in sysfs */
+ tz->tzp->sustainable_power = sustainable_power;
}

err = control_temp - tz->temperature;
--
2.17.1
\
 
 \ /
  Last update: 2020-10-02 14:24    [W:0.071 / U:3.012 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site