From: Thomas Gleixner Date: Fri, 17 Jun 2011 12:39:57 +0200 Subject: [PATCH 036/353] rt: Provide PREEMPT_RT_BASE config switch Origin: https://git.kernel.org/cgit/linux/kernel/git/rt/linux-stable-rt.git/commit?id=b0d131d186abf19fa4f22052f09aa9d1e4b8e67d Introduce PREEMPT_RT_BASE which enables parts of PREEMPT_RT_FULL. Forces interrupt threading and enables some of the RT substitutions for testing. Signed-off-by: Thomas Gleixner --- kernel/Kconfig.preempt | 21 ++++++++++++++++++--- 1 file changed, 18 insertions(+), 3 deletions(-) diff --git a/kernel/Kconfig.preempt b/kernel/Kconfig.preempt index cd1655122ec0..027db5976c2f 100644 --- a/kernel/Kconfig.preempt +++ b/kernel/Kconfig.preempt @@ -1,3 +1,10 @@ +config PREEMPT + bool + select PREEMPT_COUNT + +config PREEMPT_RT_BASE + bool + select PREEMPT choice prompt "Preemption Model" @@ -34,10 +41,10 @@ config PREEMPT_VOLUNTARY Select this if you are building a kernel for a desktop system. -config PREEMPT +config PREEMPT__LL bool "Preemptible Kernel (Low-Latency Desktop)" depends on !ARCH_NO_PREEMPT - select PREEMPT_COUNT + select PREEMPT select UNINLINE_SPIN_UNLOCK if !ARCH_INLINE_SPIN_UNLOCK help This option reduces the latency of the kernel by making @@ -54,7 +61,15 @@ config PREEMPT embedded system with latency requirements in the milliseconds range. +config PREEMPT_RTB + bool "Preemptible Kernel (Basic RT)" + select PREEMPT_RT_BASE + help + This option is basically the same as (Low-Latency Desktop) but + enables changes which are preliminary for the full preemptible + RT kernel. + endchoice config PREEMPT_COUNT - bool \ No newline at end of file + bool