diff options
Diffstat (limited to 'arch/x86_64/Kconfig')
-rw-r--r-- | arch/x86_64/Kconfig | 29 |
1 files changed, 2 insertions, 27 deletions
diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig index 92f5a5266023..a853d87ff7e3 100644 --- a/arch/x86_64/Kconfig +++ b/arch/x86_64/Kconfig | |||
@@ -207,33 +207,6 @@ config SMP | |||
207 | 207 | ||
208 | If you don't know what to do here, say N. | 208 | If you don't know what to do here, say N. |
209 | 209 | ||
210 | config PREEMPT | ||
211 | bool "Preemptible Kernel" | ||
212 | ---help--- | ||
213 | This option reduces the latency of the kernel when reacting to | ||
214 | real-time or interactive events by allowing a low priority process to | ||
215 | be preempted even if it is in kernel mode executing a system call. | ||
216 | This allows applications to run more reliably even when the system is | ||
217 | under load. On contrary it may also break your drivers and add | ||
218 | priority inheritance problems to your system. Don't select it if | ||
219 | you rely on a stable system or have slightly obscure hardware. | ||
220 | It's also not very well tested on x86-64 currently. | ||
221 | You have been warned. | ||
222 | |||
223 | Say Y here if you are feeling brave and building a kernel for a | ||
224 | desktop, embedded or real-time system. Say N if you are unsure. | ||
225 | |||
226 | config PREEMPT_BKL | ||
227 | bool "Preempt The Big Kernel Lock" | ||
228 | depends on PREEMPT | ||
229 | default y | ||
230 | help | ||
231 | This option reduces the latency of the kernel by making the | ||
232 | big kernel lock preemptible. | ||
233 | |||
234 | Say Y here if you are building a kernel for a desktop system. | ||
235 | Say N if you are unsure. | ||
236 | |||
237 | config SCHED_SMT | 210 | config SCHED_SMT |
238 | bool "SMT (Hyperthreading) scheduler support" | 211 | bool "SMT (Hyperthreading) scheduler support" |
239 | depends on SMP | 212 | depends on SMP |
@@ -244,6 +217,8 @@ config SCHED_SMT | |||
244 | cost of slightly increased overhead in some places. If unsure say | 217 | cost of slightly increased overhead in some places. If unsure say |
245 | N here. | 218 | N here. |
246 | 219 | ||
220 | source "kernel/Kconfig.preempt" | ||
221 | |||
247 | config K8_NUMA | 222 | config K8_NUMA |
248 | bool "K8 NUMA support" | 223 | bool "K8 NUMA support" |
249 | select NUMA | 224 | select NUMA |