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| author | Christoph Hellwig <hch@lst.de> | 2018-07-31 13:39:32 +0200 |
|---|---|---|
| committer | Masahiro Yamada <yamada.masahiro@socionext.com> | 2018-08-02 08:06:54 +0900 |
| commit | 87a4c375995ed8eaa721b08825cf73d0b02b3145 (patch) | |
| tree | b79c3056b713e8500c5c111a39dba655040a2bdb /kernel/Kconfig.preempt | |
| parent | 06ec64b84c357693e9a5540de8eedfc775dbae12 (diff) | |
| download | lwn-87a4c375995ed8eaa721b08825cf73d0b02b3145.tar.gz lwn-87a4c375995ed8eaa721b08825cf73d0b02b3145.zip | |
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/Kconfig.preempt')
| -rw-r--r-- | kernel/Kconfig.preempt | 2 |
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 |