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-rw-r--r--services/surfaceflinger/Android.mk4
-rw-r--r--services/surfaceflinger/main_surfaceflinger.cpp7
2 files changed, 11 insertions, 0 deletions
diff --git a/services/surfaceflinger/Android.mk b/services/surfaceflinger/Android.mk
index 1eb2361..1901ef9 100644
--- a/services/surfaceflinger/Android.mk
+++ b/services/surfaceflinger/Android.mk
@@ -122,6 +122,10 @@ LOCAL_LDFLAGS := -Wl,--version-script,art/sigchainlib/version-script.txt -Wl,--e
LOCAL_CFLAGS := -DLOG_TAG=\"SurfaceFlinger\"
LOCAL_CPPFLAGS := -std=c++11
+ifneq ($(ENABLE_CPUSETS),)
+ LOCAL_CFLAGS += -DENABLE_CPUSETS
+endif
+
LOCAL_SRC_FILES := \
main_surfaceflinger.cpp
diff --git a/services/surfaceflinger/main_surfaceflinger.cpp b/services/surfaceflinger/main_surfaceflinger.cpp
index a74bc4c..6fa8b53 100644
--- a/services/surfaceflinger/main_surfaceflinger.cpp
+++ b/services/surfaceflinger/main_surfaceflinger.cpp
@@ -41,6 +41,13 @@ int main(int, char**) {
set_sched_policy(0, SP_FOREGROUND);
+#ifdef ENABLE_CPUSETS
+ // Put most SurfaceFlinger threads in the system-background cpuset
+ // Keeps us from unnecessarily using big cores
+ // Do this after the binder thread pool init
+ set_cpuset_policy(0, SP_SYSTEM);
+#endif
+
// initialize before clients can connect
flinger->init();