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Add generic exit-time stack-depth checking to CONFIG_DEBUG_STACK_USAGE

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Add generic exit-time stack-depth checking to CONFIG_DEBUG_STACK_USAGE.

This also adds UML support.

Tested on UML and i386.

[akpm@linux-foundation.org: cleanups, speedups, tweaks]
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jeff Dike
2007-07-15 23:38:48 -07:00
committed by Linus Torvalds
parent 84812217e3
commit e18eecb8b3
4 changed files with 48 additions and 0 deletions
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9
arch/um/Kconfig.debug
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@@ -47,4 +47,13 @@ config GCOV
If you're involved in UML kernel development and want to use gcov,
say Y. If you're unsure, say N.
config DEBUG_STACK_USAGE
bool "Stack utilization instrumentation"
default N
help
Track the maximum kernel stack usage - this will look at each
kernel stack at process exit and log it if it's the deepest
stack seen so far.
This option will slow down process creation and destruction somewhat.
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