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-rw-r--r--lib/Kconfig.debug18
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