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| author |   Jeff Dike <jdike@addtoit.com> | 2007-07-15 23:38:48 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-16 09:05:38 -0700 |
| commit | e18eecb8b35703a5eea73ee2b45324262029e62c (patch) | |
| tree | 8c276ae6633b8116ca366274091b00491fd50bbe /arch/um | |
| parent | uml: use get_free_pages to allocate kernel stacks (diff) | |
| download | linux-dev-e18eecb8b35703a5eea73ee2b45324262029e62c.tar.xz linux-dev-e18eecb8b35703a5eea73ee2b45324262029e62c.zip | |
Add generic exit-time stack-depth checking to CONFIG_DEBUG_STACK_USAGE
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>
Diffstat (limited to 'arch/um')
| -rw-r--r-- | arch/um/Kconfig.debug | 9 | ||||
| -rw-r--r-- | arch/um/defconfig | 1 |
2 files changed, 10 insertions, 0 deletions
diff --git a/arch/um/Kconfig.debug b/arch/um/Kconfig.debug index 09c1aca6339f..c86f5eb29fd5 100644 --- a/arch/um/Kconfig.debug +++ b/arch/um/Kconfig.debug @@ -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. endmenu diff --git a/arch/um/defconfig b/arch/um/defconfig index a54d0efecae1..e5b2df9e12de 100644 --- a/arch/um/defconfig +++ b/arch/um/defconfig @@ -527,3 +527,4 @@ CONFIG_FORCED_INLINING=y # CONFIG_RCU_TORTURE_TEST is not set # CONFIG_GPROF is not set # CONFIG_GCOV is not set +# CONFIG_DEBUG_STACK_USAGE is not set |