Commit 176b8906 authored by Frederic Weisbecker's avatar Frederic Weisbecker Committed by Ingo Molnar
Browse files

tick/nohz: Update nohz_full Kconfig help 



CONFIG_NO_HZ_FULL behaves just like CONFIG_NO_HZ_IDLE by default.
Reassure distros about it.

Signed-off-by: default avatarFrederic Weisbecker <frederic@kernel.org>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
Acked-by: default avatarPeter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210512232924.150322-6-frederic@kernel.org
parent 96c9b903

kernel/time/Kconfig

+6 −5
Original line number Diff line number Diff line
@@ -117,13 +117,14 @@ config NO_HZ_FULL 
	 the task mostly runs in userspace and has few kernel activity.



	 You need to fill up the nohz_full boot parameter with the

	 desired range of dynticks CPUs.

	 desired range of dynticks CPUs to use it. This is implemented at

	 the expense of some overhead in user <-> kernel transitions:

	 syscalls, exceptions and interrupts.



	 This is implemented at the expense of some overhead in user <-> kernel

	 transitions: syscalls, exceptions and interrupts. Even when it's

	 dynamically off.

	 By default, without passing the nohz_full parameter, this behaves just

	 like NO_HZ_IDLE.



	 Say N.

	 If you're a distro say Y.



endchoice