diff options
Diffstat (limited to 'lib/Kconfig.debug')
| -rw-r--r-- | lib/Kconfig.debug | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 2a9a8759752b..7396f5044397 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -1091,6 +1091,8 @@ config PROVE_LOCKING select DEBUG_MUTEXES select DEBUG_RT_MUTEXES if RT_MUTEXES select DEBUG_LOCK_ALLOC + select LOCKDEP_CROSSRELEASE + select LOCKDEP_COMPLETIONS select TRACE_IRQFLAGS default n help @@ -1160,6 +1162,22 @@ config LOCK_STAT CONFIG_LOCK_STAT defines "contended" and "acquired" lock events. (CONFIG_LOCKDEP defines "acquire" and "release" events.) +config LOCKDEP_CROSSRELEASE + bool + help + This makes lockdep work for crosslock which is a lock allowed to + be released in a different context from the acquisition context. + Normally a lock must be released in the context acquiring the lock. + However, relexing this constraint helps synchronization primitives + such as page locks or completions can use the lock correctness + detector, lockdep. + +config LOCKDEP_COMPLETIONS + bool + help + A deadlock caused by wait_for_completion() and complete() can be + detected by lockdep using crossrelease feature. + config DEBUG_LOCKDEP bool "Lock dependency engine debugging" depends on DEBUG_KERNEL && LOCKDEP |