diff options
Diffstat (limited to 'arch/x86/Kconfig.debug')
| -rw-r--r-- | arch/x86/Kconfig.debug | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug index 761ca7b5f12..40aba670fb3 100644 --- a/arch/x86/Kconfig.debug +++ b/arch/x86/Kconfig.debug @@ -112,4 +112,13 @@ config IOMMU_LEAK Add a simple leak tracer to the IOMMU code. This is useful when you are debugging a buggy device driver that leaks IOMMU mappings. +config UDELAY_IO_DELAY + bool "Delay I/O through udelay instead of outb" + depends on DEBUG_KERNEL + help + Make inb_p/outb_p use udelay() based delays by default. Please note + that udelay() does not have the same bus-level side-effects that + the normal outb based delay does meaning this could cause drivers + to change behaviour and/or bugs to surface. + endmenu |