commit 414066f103d9dc4a3b2019929e00f3d989187927
author Wei Wang <wvw@google.com> Wed Oct 06 13:19:40 2021 -0700
committer Wei Wang <wvw@google.com> Tue Oct 12 13:50:57 2021 -0700
tree b52be6e14f6c54a0daa34ed919ed2a09a146dba0
parent 7d0d2634ef1d9ec41616ed616d479c3687122d89

Use sysbg group for system background jobs

Bug: 201428466
Test: Build and boot check system_server's sched group
Signed-off-by: Wei Wang <wvw@google.com>
Change-Id: I03396b661788de0a5963e29abfd95f609e9dc7ec

conf/init.gs101.rc

diff --git a/conf/init.gs101.rc b/conf/init.gs101.rc
index b5983d9..54d7936 100644
--- a/conf/init.gs101.rc
+++ b/conf/init.gs101.rc
@@ -720,12 +720,15 @@
     # Setup final cpu.uclamp
     write /sys/kernel/vendor_sched/ta_uclamp_min 1
     write /sys/kernel/vendor_sched/fg_uclamp_min 0
-    write /sys/kernel/vendor_sched/bg_uclamp_max 615
     write /sys/kernel/vendor_sched/sys_prefer_idle 0
     # cfs_rq clamp is using tg->uclamp setting
     # align it with the vendor_group setting
+    write /sys/kernel/vendor_sched/bg_uclamp_max 615
     write /dev/cpuctl/background/cpu.uclamp.max 60
     write /sys/kernel/vendor_sched/bg_group_throttle 615
+    write /sys/kernel/vendor_sched/sysbg_uclamp_max 615
+    write /dev/cpuctl/system-background/cpu.uclamp.max 60
+    write /sys/kernel/vendor_sched/sysbg_group_throttle 615
 
     # Setup groups for SF (RT used for SF RE, SF used for SF main)
     write /sys/kernel/vendor_sched/rt_uclamp_min 125
@@ -733,15 +736,15 @@
     write /sys/kernel/vendor_sched/sf_uclamp_min 30
     write /sys/kernel/vendor_sched/sf_prefer_idle 1
 
-    # Setup cpu.shares to throttle background group at 15%
-    write /dev/cpuctl/background/cpu.shares 4096
+    # Setup cpu.shares to throttle background groups (bg ~ 5% sysbg ~ 10%)
+    write /dev/cpuctl/background/cpu.shares 1024
+    write /dev/cpuctl/system-background/cpu.shares 2048
     write /dev/cpuctl/system/cpu.shares 20480
     # We only have system and background groups holding tasks and the groups below are empty
     write /dev/cpuctl/camera-daemon/cpu.shares 20480
     write /dev/cpuctl/foreground/cpu.shares 20480
     write /dev/cpuctl/nnapi-hal/cpu.shares 20480
     write /dev/cpuctl/rt/cpu.shares 20480
-    write /dev/cpuctl/system-background/cpu.shares 20480
     write /dev/cpuctl/top-app/cpu.shares 20480
 
     # gvotables for dumpstate

task_profiles.json

diff --git a/task_profiles.json b/task_profiles.json
index d40170c..02c8f37 100644
--- a/task_profiles.json
+++ b/task_profiles.json
@@ -223,7 +223,7 @@
           "Params":
           {
             "Controller": "cpu",
-            "Path": "system"
+            "Path": "system-background"
           }
         },
         {