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| author | Changbin Du <changbin.du@gmail.com> | 2019-12-06 17:03:57 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-12-07 11:00:19 -0800 |
| commit | dc9b96387ec9b6d770dec6fcb3017afebc9e49d6 (patch) | |
| tree | 1734a15185c74d37800bc2cbd66d04d775a09063 /lib | |
| parent | f43a289df67153a169776f8ea0445bc3a57e7a83 (diff) | |
| download | lwn-dc9b96387ec9b6d770dec6fcb3017afebc9e49d6.tar.gz lwn-dc9b96387ec9b6d770dec6fcb3017afebc9e49d6.zip | |
kernel-hacking: move SCHED_STACK_END_CHECK after DEBUG_STACK_USAGE
They are both memory debug options to debug kernel stack issues.
Link: http://lkml.kernel.org/r/20190909144453.3520-7-changbin.du@gmail.com
Signed-off-by: Changbin Du <changbin.du@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Kconfig.debug | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 4c8487844727..a02afa6436b1 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -632,6 +632,18 @@ config DEBUG_STACK_USAGE This option will slow down process creation somewhat. +config SCHED_STACK_END_CHECK + bool "Detect stack corruption on calls to schedule()" + depends on DEBUG_KERNEL + default n + help + This option checks for a stack overrun on calls to schedule(). + If the stack end location is found to be over written always panic as + the content of the corrupted region can no longer be trusted. + This is to ensure no erroneous behaviour occurs which could result in + data corruption or a sporadic crash at a later stage once the region + is examined. The runtime overhead introduced is minimal. + config DEBUG_VM bool "Debug VM" depends on DEBUG_KERNEL @@ -985,18 +997,6 @@ config SCHEDSTATS application, you can say N to avoid the very slight overhead this adds. -config SCHED_STACK_END_CHECK - bool "Detect stack corruption on calls to schedule()" - depends on DEBUG_KERNEL - default n - help - This option checks for a stack overrun on calls to schedule(). - If the stack end location is found to be over written always panic as - the content of the corrupted region can no longer be trusted. - This is to ensure no erroneous behaviour occurs which could result in - data corruption or a sporadic crash at a later stage once the region - is examined. The runtime overhead introduced is minimal. - config DEBUG_TIMEKEEPING bool "Enable extra timekeeping sanity checking" help |