diff options
Diffstat (limited to 'lib/Kconfig.debug')
| -rw-r--r-- | lib/Kconfig.debug | 39 |
1 files changed, 37 insertions, 2 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 094f3152ec2b..900b63c1e899 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -312,6 +312,15 @@ config MAGIC_SYSRQ keys are documented in <file:Documentation/sysrq.txt>. Don't say Y unless you really know what this hack does. +config MAGIC_SYSRQ_DEFAULT_ENABLE + hex "Enable magic SysRq key functions by default" + depends on MAGIC_SYSRQ + default 0x1 + help + Specifies which SysRq key functions are enabled by default. + This may be set to 1 or 0 to enable or disable them all, or + to a bitmask as described in Documentation/sysrq.txt. + config DEBUG_KERNEL bool "Kernel debugging" help @@ -752,6 +761,15 @@ config PANIC_ON_OOPS_VALUE default 0 if !PANIC_ON_OOPS default 1 if PANIC_ON_OOPS +config PANIC_TIMEOUT + int "panic timeout" + default 0 + help + Set the timeout value (in seconds) until a reboot occurs when the + the kernel panics. If n = 0, then we wait forever. A timeout + value n > 0 will wait n seconds before rebooting, while a timeout + value n < 0 will reboot immediately. + config SCHED_DEBUG bool "Collect scheduler debugging info" depends on DEBUG_KERNEL && PROC_FS @@ -1472,6 +1490,15 @@ config INTERVAL_TREE_TEST help A benchmark measuring the performance of the interval tree library +config PERCPU_TEST + tristate "Per cpu operations test" + depends on m && DEBUG_KERNEL + help + Enable this option to build test module which validates per-cpu + operations. + + If unsure, say N. + config ATOMIC64_SELFTEST bool "Perform an atomic64_t self-test at boot" help @@ -1557,8 +1584,16 @@ config DMA_API_DEBUG With this option you will be able to detect common bugs in device drivers like double-freeing of DMA mappings or freeing mappings that were never allocated. - This option causes a performance degredation. Use only if you want - to debug device drivers. If unsure, say N. + + This also attempts to catch cases where a page owned by DMA is + accessed by the cpu in a way that could cause data corruption. For + example, this enables cow_user_page() to check that the source page is + not undergoing DMA. + + This option causes a performance degradation. Use only if you want to + debug device drivers and dma interactions. + + If unsure, say N. source "samples/Kconfig" |