1 files changed, 13 insertions, 0 deletions

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 566cf2bc08ea..7154f799541a 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -547,6 +547,19 @@ config DEBUG_MUTEXES
          This feature allows mutex semantics violations to be detected and
          reported.
 
+config DEBUG_WW_MUTEX_SLOWPATH
+        bool "Wait/wound mutex debugging: Slowpath testing"
+        depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT
+        select DEBUG_LOCK_ALLOC
+        select DEBUG_SPINLOCK
+        select DEBUG_MUTEXES
+        help
+         This feature enables slowpath testing for w/w mutex users by
+         injecting additional -EDEADLK wound/backoff cases. Together with
+         the full mutex checks enabled with (CONFIG_PROVE_LOCKING) this
+         will test all possible w/w mutex interface abuse with the
+         exception of simply not acquiring all the required locks.
+
 config DEBUG_LOCK_ALLOC
         bool "Lock debugging: detect incorrect freeing of live locks"
         depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT