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| author |   Ingo Molnar <mingo@elte.hu> | 2005-06-25 14:57:36 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-06-25 16:24:45 -0700 |
| commit | cc19ca86a023fcd552c78e77a7be6ce271f92a28 (patch) | |
| tree | b4e9c9b02b73105d363070c49a765208b99cee1a /kernel | |
| parent | [PATCH] Dynamic sched domains: ia64 changes (diff) | |
| download | linux-dev-cc19ca86a023fcd552c78e77a7be6ce271f92a28.tar.xz linux-dev-cc19ca86a023fcd552c78e77a7be6ce271f92a28.zip | |
[PATCH] consolidate PREEMPT options into kernel/Kconfig.preempt
This patch consolidates the CONFIG_PREEMPT and CONFIG_PREEMPT_BKL
preemption options into kernel/Kconfig.preempt. This, besides reducing
source-code, also enables more centralized tweaking of preemption related
options.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/Kconfig.preempt | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/kernel/Kconfig.preempt b/kernel/Kconfig.preempt new file mode 100644 index 000000000000..587328be8216 --- /dev/null +++ b/kernel/Kconfig.preempt @@ -0,0 +1,24 @@ + +config PREEMPT + bool "Preemptible Kernel" + help + This option reduces the latency of the kernel when reacting to + real-time or interactive events by allowing a low priority process to + be preempted even if it is in kernel mode executing a system call. + This allows applications to run more reliably even when the system is + under load. + + Say Y here if you are building a kernel for a desktop, embedded + or real-time system. Say N if you are unsure. + +config PREEMPT_BKL + bool "Preempt The Big Kernel Lock" + depends on PREEMPT + default y + help + This option reduces the latency of the kernel by making the + big kernel lock preemptible. + + Say Y here if you are building a kernel for a desktop system. + Say N if you are unsure. + |