Commit 03e55b73 authored Mar 12, 2025 by Federico 'Morg' Pareschi

init: Use exec_background instead of exec

extra_free_kbytes.sh sometimes takes a long time to execute, especially
on some slower devices. We don't need to wait for its completion in this
script before continuing init execution. This saves up to 200ms boot
time on some slower device models.

Bug: http://b/383225735
Test: manual, bootperf over 100 iterations

Change-Id: I19e3566d71c0e6f57045e1475d20b68bc204b5a4

parent 181d0b5a

rootdir/init.rc

+1 −1

Original line number	Diff line number	Diff line
		@@ -1233,7 +1233,7 @@ on property:sys.boot_completed=1
		# and chown/chmod does not work for /proc/sys/ entries.
		# So proxy writes through init.
		on property:sys.sysctl.extra_free_kbytes=*
		exec -- /system/bin/extra_free_kbytes.sh ${sys.sysctl.extra_free_kbytes}
		exec_background -- /system/bin/extra_free_kbytes.sh ${sys.sysctl.extra_free_kbytes}

		# Allow users to drop caches
		on property:perf.drop_caches=3