From: Changbin Du Date: Sat, 7 Dec 2019 01:03:57 +0000 (-0800) Subject: kernel-hacking: move SCHED_STACK_END_CHECK after DEBUG_STACK_USAGE X-Git-Tag: v5.10.7~3678^2~4 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=dc9b96387ec9b6d770dec6fcb3017afebc9e49d6;p=platform%2Fkernel%2Flinux-rpi.git 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 Acked-by: Randy Dunlap Tested-by: Randy Dunlap Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 4c84878..a02afa6 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