diff options
| author | Uwe Kleine-König <[email protected]> | 2023-12-19 19:28:09 +0100 |
|---|---|---|
| committer | Andrew Morton <[email protected]> | 2023-12-29 12:22:26 -0800 |
| commit | bc09d1dea84efaff022c09b9c5175b2a75553006 (patch) | |
| tree | 9f2ef3f0690493502b02c58bfc3ec42281855eec | |
| parent | d089622b32c389d6d6a1fa6bbd9e3f121b9bcd5b (diff) | |
lib: add note about process exit message for DEBUG_STACK_USAGE
DEBUG_STACK_USAGE doesn't only have an influence on the output of sysrq-T
and sysrq-P, it also enables a message at process exit. See
check_stack_usage() in kernel/exit.c where this is implemented.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Uwe Kleine-König <[email protected]>
Cc: Douglas Anderson <[email protected]>
Cc: Geert Uytterhoeven <[email protected]>
Cc: Kees Cook <[email protected]>
Cc: Marco Elver <[email protected]>
Cc: "Paul E. McKenney" <[email protected]>
Cc: Pengutronix Kernel Team <[email protected]>
Cc: Petr Mladek <[email protected]>
Cc: Randy Dunlap <[email protected]>
Cc: Stephen Boyd <[email protected]>
Cc: Zhaoyang Huang <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
| -rw-r--r-- | lib/Kconfig.debug | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index e77873cf85c7..6cc3d29338c5 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -763,6 +763,8 @@ config DEBUG_STACK_USAGE help Enables the display of the minimum amount of free stack which each task has ever had available in the sysrq-T and sysrq-P debug output. + Also emits a message to dmesg when a process exits if that process + used more stack space than previously exiting processes. This option will slow down process creation somewhat. |