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Commit 319474c1 authored Oct 06, 2024 by Wei Wang

Set reset_on_fork in setRenderThread as well

Also check the thread scheduler before setting it to SCHED_OTHER | SCHED_RESET_ON_FORK to avoid overhead.

Bug: 370988407
Change-Id: I946f653429978ae2be1c119dd4d99733acd372ff
Flag: com.android.server.am.reset_on_fork_enabled
Test: Build and check with chrt -p [APP_RT_PID]

parent bc57d803

services/core/java/com/android/server/am/ActivityManagerService.java

+10 −1

Original line number	Diff line number	Diff line
		@@ -8269,7 +8269,16 @@ public class ActivityManagerService extends IActivityManager.Stub
		setThreadScheduler(proc.getRenderThreadTid(),
		SCHED_FIFO \| SCHED_RESET_ON_FORK, 1);
		} else {
		setThreadPriority(proc.getRenderThreadTid(), THREAD_PRIORITY_TOP_APP_BOOST);
		if (Flags.resetOnForkEnabled()) {
		if (Process.getThreadScheduler(proc.getRenderThreadTid())
		== Process.SCHED_OTHER) {
		Process.setThreadScheduler(proc.getRenderThreadTid(),
		Process.SCHED_OTHER \| Process.SCHED_RESET_ON_FORK,
		0);
		}
		}
		setThreadPriority(proc.getRenderThreadTid(),
		THREAD_PRIORITY_TOP_APP_BOOST);
		}
		}
		} else {

services/core/java/com/android/server/am/OomAdjuster.java

+6 −5

Original line number	Diff line number	Diff line
		@@ -459,13 +459,14 @@ public class OomAdjuster {

		void setThreadPriority(int tid, int priority) {
		if (Flags.resetOnForkEnabled()) {
		if (Process.getThreadScheduler(tid) == Process.SCHED_OTHER) {
		Process.setThreadScheduler(tid,
		Process.SCHED_OTHER \| Process.SCHED_RESET_ON_FORK,
		priority);
		} else {
		Process.setThreadPriority(tid, priority);
		0);
		}
		}
		Process.setThreadPriority(tid, priority);
		}

		}