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authorThomas Gleixner <tglx@linutronix.de>2019-07-22 17:59:19 +0200
committerThomas Gleixner <tglx@linutronix.de>2019-07-22 18:05:11 +0200
commitb8d3349803ba34afda429e87a837fd95a99b2349 (patch)
treeb9e24b4a82f95d204106d19c6d9f5e17bc2c677d
parent5f9e832c137075045d15cd6899ab0505cfb2ca4b (diff)
downloadlinux-stericsson-b8d3349803ba34afda429e87a837fd95a99b2349.tar.gz
sched/rt, Kconfig: Unbreak def/oldconfig with CONFIG_PREEMPT=y
The merge of the CONFIG_PREEMPT_RT stub renamed CONFIG_PREEMPT to CONFIG_PREEMPT_LL which causes all defconfigs which have CONFIG_PREEMPT=y set to fall back to CONFIG_PREEMPT_NONE because CONFIG_PREEMPT depends on the preemption mode choice wich defaults to NONE. This also affects oldconfig builds. So rather than changing 114 defconfig files and being an annoyance to users, revert the rename and select a new config symbol PREEMPTION. That keeps everything working smoothly and the revelant ifdef's are going to be fixed up step by step. Reported-by: Mark Rutland <mark.rutland@arm.com> Fixes: a50a3f4b6a31 ("sched/rt, Kconfig: Introduce CONFIG_PREEMPT_RT") Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
-rw-r--r--kernel/Kconfig.preempt8
1 files changed, 4 insertions, 4 deletions
diff --git a/kernel/Kconfig.preempt b/kernel/Kconfig.preempt
index fc020c09b7e8..deff97217496 100644
--- a/kernel/Kconfig.preempt
+++ b/kernel/Kconfig.preempt
@@ -35,10 +35,10 @@ config PREEMPT_VOLUNTARY
Select this if you are building a kernel for a desktop system.
-config PREEMPT_LL
+config PREEMPT
bool "Preemptible Kernel (Low-Latency Desktop)"
depends on !ARCH_NO_PREEMPT
- select PREEMPT
+ select PREEMPTION
select UNINLINE_SPIN_UNLOCK if !ARCH_INLINE_SPIN_UNLOCK
help
This option reduces the latency of the kernel by making
@@ -58,7 +58,7 @@ config PREEMPT_LL
config PREEMPT_RT
bool "Fully Preemptible Kernel (Real-Time)"
depends on EXPERT && ARCH_SUPPORTS_RT
- select PREEMPT
+ select PREEMPTION
help
This option turns the kernel into a real-time kernel by replacing
various locking primitives (spinlocks, rwlocks, etc.) with
@@ -77,6 +77,6 @@ endchoice
config PREEMPT_COUNT
bool
-config PREEMPT
+config PREEMPTION
bool
select PREEMPT_COUNT