Make hwc_vsync thread realtime

Bug: 68395248
Change-Id: I4ac93464aa2ccf416577b4067ed658b525089983

diff --git a/libhwc/ExynosHWC.cpp b/libhwc/ExynosHWC.cpp
index c6f1e50a31bfc2a2e5e37d98e1e34fc95408a276..02913a44fed1d6bf088b08a5115d1b57d636fea3 100644 (file)
--- a/libhwc/ExynosHWC.cpp
+++ b/libhwc/ExynosHWC.cpp
@@ -626,7 +626,11 @@ void *hwc_vsync_thread(void *data)
     char uevent_desc[4096];
     memset(uevent_desc, 0, sizeof(uevent_desc));
 
-    setpriority(PRIO_PROCESS, 0, HAL_PRIORITY_URGENT_DISPLAY);
+    struct sched_param sched_param = {0};
+    sched_param.sched_priority = 5;
+    if (sched_setscheduler(gettid(), SCHED_FIFO, &sched_param) != 0) {
+        ALOGE("Couldn't set SCHED_FIFO for hwc_vsync");
+    }
 
     uevent_init();