diff --git a/graphics/composer/aidl/android/hardware/graphics/composer3/vts/functional/VtsHalGraphicsComposer3_TargetTest.cpp b/graphics/composer/aidl/android/hardware/graphics/composer3/vts/functional/VtsHalGraphicsComposer3_TargetTest.cpp index 272da7e041..39825c4ed0 100644 --- a/graphics/composer/aidl/android/hardware/graphics/composer3/vts/functional/VtsHalGraphicsComposer3_TargetTest.cpp +++ b/graphics/composer/aidl/android/hardware/graphics/composer3/vts/functional/VtsHalGraphicsComposer3_TargetTest.cpp @@ -1968,5 +1968,41 @@ int main(int argc, char** argv) { ALOGE("Failed to stop init.svc.surfaceflinger"); return -1; } + + android::ProcessState::self()->setThreadPoolMaxThreadCount(4); + + // The binder threadpool we start will inherit sched policy and priority + // of (this) creating thread. We want the binder thread pool to have + // SCHED_FIFO policy and priority 1 (lowest RT priority) + // Once the pool is created we reset this thread's priority back to + // original. + // This thread policy is based on what we do in the SurfaceFlinger while starting + // the thread pool and we need to replicate that for the VTS tests. + int newPriority = 0; + int origPolicy = sched_getscheduler(0); + struct sched_param origSchedParam; + + int errorInPriorityModification = sched_getparam(0, &origSchedParam); + if (errorInPriorityModification == 0) { + int policy = SCHED_FIFO; + newPriority = sched_get_priority_min(policy); + + struct sched_param param; + param.sched_priority = newPriority; + + errorInPriorityModification = sched_setscheduler(0, policy, ¶m); + } + + // start the thread pool + android::ProcessState::self()->startThreadPool(); + + // Reset current thread's policy and priority + if (errorInPriorityModification == 0) { + errorInPriorityModification = sched_setscheduler(0, origPolicy, &origSchedParam); + } else { + ALOGE("Failed to set VtsHalGraphicsComposer3_TargetTest binder threadpool priority to " + "SCHED_FIFO"); + } + return RUN_ALL_TESTS(); }