Gh0st
/
linux
mirror of https://github.com/torvalds/linux.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

cpuidle: Respect the CPU system wakeup QoS limit for cpuidle 

The CPU system wakeup QoS limit must be respected for the regular cpuidle
state selection. Therefore, let's extend the common governor helper
cpuidle_governor_latency_req(), to take the constraint into account.

Reviewed-by: Dhruva Gole <d-gole@ti.com>
Reviewed-by: Kevin Hilman (TI) <khilman@baylibre.com>
Tested-by: Kevin Hilman (TI) <khilman@baylibre.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://patch.msgid.link/20251125112650.329269-6-ulf.hansson@linaro.org
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Ulf Hansson 2025-11-25 12:26:46 +01:00 committed by Rafael J. Wysocki
parent 99b42445f4
commit 2b8d594742
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/cpuidle/governor.c
View File

@ -111,6 +111,10 @@ s64 cpuidle_governor_latency_req(unsigned int cpu)
struct device *device = get_cpu_device(cpu);
int device_req = dev_pm_qos_raw_resume_latency(device);
int global_req = cpu_latency_qos_limit();
int global_wake_req = cpu_wakeup_latency_qos_limit();
if (global_req > global_wake_req)
global_req = global_wake_req;
if (device_req > global_req)
device_req = global_req;