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authorChristoph Hellwig <hch@lst.de>2018-07-31 13:39:32 +0200
committerMasahiro Yamada <yamada.masahiro@socionext.com>2018-08-02 08:06:54 +0900
commit87a4c375995ed8eaa721b08825cf73d0b02b3145 (patch)
treeb79c3056b713e8500c5c111a39dba655040a2bdb /kernel
parent06ec64b84c357693e9a5540de8eedfc775dbae12 (diff)
kconfig: include kernel/Kconfig.preempt from init/Kconfig
Almost all architectures include it. Add a ARCH_NO_PREEMPT symbol to disable preempt support for alpha, hexagon, non-coldfire m68k and user mode Linux. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/Kconfig.preempt2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/Kconfig.preempt b/kernel/Kconfig.preempt
index 3f9c97419f02..cd1655122ec0 100644
--- a/kernel/Kconfig.preempt
+++ b/kernel/Kconfig.preempt
@@ -18,6 +18,7 @@ config PREEMPT_NONE
config PREEMPT_VOLUNTARY
bool "Voluntary Kernel Preemption (Desktop)"
+ depends on !ARCH_NO_PREEMPT
help
This option reduces the latency of the kernel by adding more
"explicit preemption points" to the kernel code. These new
@@ -35,6 +36,7 @@ config PREEMPT_VOLUNTARY
config PREEMPT
bool "Preemptible Kernel (Low-Latency Desktop)"
+ depends on !ARCH_NO_PREEMPT
select PREEMPT_COUNT
select UNINLINE_SPIN_UNLOCK if !ARCH_INLINE_SPIN_UNLOCK
help