diff options
Diffstat (limited to 'lib/Kconfig.debug')
| -rw-r--r-- | lib/Kconfig.debug | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index d9da4ec792b4..850bb10ec91e 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -48,6 +48,16 @@ config DEBUG_SLAB allocation as well as poisoning memory on free to catch use of freed memory. This can make kmalloc/kfree-intensive workloads much slower. +config DEBUG_PREEMPT + bool "Debug preemptible kernel" + depends on PREEMPT && X86 + default y + help + If you say Y here then the kernel will use a debug variant of the + commonly used smp_processor_id() function and will print warnings + if kernel code uses it in a preemption-unsafe way. Also, the kernel + will detect preemption count underflows. + config DEBUG_SPINLOCK bool "Spinlock debugging" depends on DEBUG_KERNEL && (ALPHA || ARM || X86 || IA64 || M32R || MIPS || PARISC || PPC32 || (SUPERH && !SUPERH64) || SPARC32 || SPARC64 || USERMODE || X86_64) |