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hung_task: update DETECT_HUNG_TASK_BLOCKER Kconfig help

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The help text still says the feature only covers mutexes, but blocker
tracking has since been extended to semaphores and rwsems. Update the
description to match the supported lock types.

Link: https://lore.kernel.org/20260730061854.176547-1-wangxb12@chinatelecom.cn
Cc: Petr Mladek <pmladek@suse.com>
Signed-off-by: Xibo Wang <wangxb12@chinatelecom.cn>
Suggested-by: Lance Yang <lance.yang@linux.dev>
Reviewed-by: Lance Yang <lance.yang@linux.dev>
Cc: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Cc: Petr Mladek <pmladek@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Xibo Wang 2026-07-30 14:18:54 +08:00 committed by Andrew Morton
parent c4904c4ae3
commit aa27e55f24
1 changed files with 4 additions and 4 deletions
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8
lib/Kconfig.debug
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@ -1320,10 +1320,10 @@ config DETECT_HUNG_TASK_BLOCKER
depends on !PREEMPT_RT
default y
help
Say Y here to show the blocker task's stacktrace who acquires
the mutex lock which "hung tasks" are waiting.
This will add overhead a bit but shows suspicious tasks and
call trace if it comes from waiting a mutex.
Say Y here to show a possible blocker task's stacktrace when
a hung task is waiting on a mutex, semaphore, or rwsem.
This will add a bit of overhead but shows suspicious tasks and
call traces for waits on one of these locks.
config WQ_WATCHDOG
bool "Detect Workqueue Stalls"