Merge "Camera3Device: make request thread SCHED_FIFO for all cases" into nyc-mr1-dev (ca8cc535) · Commits · e / os / android_frameworks_av

services/camera/libcameraservice/device3/Camera3Device.cpp

+8 −12

Original line number	Diff line number	Diff line
		@@ -2042,20 +2042,16 @@ status_t Camera3Device::configureStreamsLocked() {
		// across configure_streams() calls
		mRequestThread->configurationComplete(mIsConstrainedHighSpeedConfiguration);

		// Boost priority of request thread for high speed recording to SCHED_FIFO
		if (mIsConstrainedHighSpeedConfiguration) {
		// Boost priority of request thread to SCHED_FIFO.
		pid_t requestThreadTid = mRequestThread->getTid();
		res = requestPriority(getpid(), requestThreadTid,
		kConstrainedHighSpeedThreadPriority, /asynchronous/ false);
		kRequestThreadPriority, /asynchronous/ false);
		if (res != OK) {
		ALOGW("Can't set realtime priority for request processing thread: %s (%d)",
		strerror(-res), res);
		} else {
		ALOGD("Set real time priority for request queue thread (tid %d)", requestThreadTid);
		}
		} else {
		// TODO: Set/restore normal priority for normal use cases
		}

		// Update device state

+1 −1

Original line number	Diff line number	Diff line
		@@ -178,7 +178,7 @@ class Camera3Device :
		static const size_t kInFlightWarnLimit = 20;
		static const size_t kInFlightWarnLimitHighSpeed = 256; // batch size 32 * pipe depth 8
		// SCHED_FIFO priority for request submission thread in HFR mode
		static const int kConstrainedHighSpeedThreadPriority = 1;
		static const int kRequestThreadPriority = 1;

		struct RequestTrigger;
		// minimal jpeg buffer size: 256KB + blob header