0015-Make-nohz_full-not-be-picked-up-as-a-default-config-.patch

From 55c8f2f4b7f915489f809663274fe15c14f1fd4e Mon Sep 17 00:00:00 2001
From: Con Kolivas <kernel@kolivas.org>
Date: Fri, 19 Jul 2019 17:26:51 +1000
Subject: [PATCH 15/16] Make nohz_full not be picked up as a default config
 option and add recommendation to help.

---
 kernel/time/Kconfig | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/kernel/time/Kconfig b/kernel/time/Kconfig
index 60b4fd254c80..2960cace6719 100644
--- a/kernel/time/Kconfig
+++ b/kernel/time/Kconfig
@@ -66,6 +66,9 @@ config NO_HZ_COMMON
 	depends on !ARCH_USES_GETTIMEOFFSET && GENERIC_CLOCKEVENTS
 	select TICK_ONESHOT
 
+config NO_HZ_FULL
+	bool
+
 choice
 	prompt "Timer tick handling"
 	default NO_HZ_IDLE if NO_HZ
@@ -87,8 +90,9 @@ config NO_HZ_IDLE
 
 	  Most of the time you want to say Y here.
 
-config NO_HZ_FULL
+config NO_HZ_FULL_NODEF
 	bool "Full dynticks system (tickless)"
+	select NO_HZ_FULL
 	# NO_HZ_COMMON dependency
 	depends on !ARCH_USES_GETTIMEOFFSET && GENERIC_CLOCKEVENTS
 	# We need at least one periodic CPU for timekeeping
@@ -114,6 +118,8 @@ config NO_HZ_FULL
 	 transitions: syscalls, exceptions and interrupts. Even when it's
 	 dynamically off.
 
+	 Not recommended for desktops,laptops, or mobile devices.
+
 	 Say N.
 
 endchoice
-- 
2.25.1