diff options
Diffstat (limited to 'kernel/Kconfig.preempt')
| -rw-r--r-- | kernel/Kconfig.preempt | 19 |
1 files changed, 6 insertions, 13 deletions
diff --git a/kernel/Kconfig.preempt b/kernel/Kconfig.preempt index 0b46a5dff4c..3f9c97419f0 100644 --- a/kernel/Kconfig.preempt +++ b/kernel/Kconfig.preempt @@ -23,7 +23,7 @@ config PREEMPT_VOLUNTARY "explicit preemption points" to the kernel code. These new preemption points have been selected to reduce the maximum latency of rescheduling, providing faster application reactions, - at the cost of slighly lower throughput. + at the cost of slightly lower throughput. This allows reaction to interactive events by allowing a low priority process to voluntarily preempt itself even if it @@ -35,6 +35,8 @@ config PREEMPT_VOLUNTARY config PREEMPT bool "Preemptible Kernel (Low-Latency Desktop)" + select PREEMPT_COUNT + select UNINLINE_SPIN_UNLOCK if !ARCH_INLINE_SPIN_UNLOCK help This option reduces the latency of the kernel by making all kernel code (that is not executing in a critical section) @@ -43,7 +45,7 @@ config PREEMPT even if it is in kernel mode executing a system call and would otherwise not be about to reach a natural preemption point. This allows applications to run more 'smoothly' even when the - system is under load, at the cost of slighly lower throughput + system is under load, at the cost of slightly lower throughput and a slight runtime overhead to kernel code. Select this if you are building a kernel for a desktop or @@ -52,14 +54,5 @@ config PREEMPT endchoice -config PREEMPT_BKL - bool "Preempt The Big Kernel Lock" - depends on SMP || 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. - +config PREEMPT_COUNT + bool
\ No newline at end of file |