[Xen-devel] [PATCH 1 of 6] x86/mm: Print stack trace on a an mm-locks deadlock panic

[Andres Lagar-Cavilla <andres@xxxxxxxxxxxxxxxx>]

 xen/arch/x86/mm/mm-locks.h |  3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)


Signed-off-by: Andres Lagar-Cavilla <andres@xxxxxxxxxxxxxxxx>

diff -r 7b606c043208 -r aa4ef559da60 xen/arch/x86/mm/mm-locks.h
--- a/xen/arch/x86/mm/mm-locks.h
+++ b/xen/arch/x86/mm/mm-locks.h
@@ -50,8 +50,11 @@ static inline int mm_locked_by_me(mm_loc
 #define __check_lock_level(l)                           \
 do {                                                    \
     if ( unlikely(__get_lock_level()) > (l) )           \
+    {                                                   \
+        WARN();                                         \
         panic("mm locking order violation: %i > %i\n",  \
               __get_lock_level(), (l));                 \
+    }                                                   \
 } while(0)
 
 #define __set_lock_level(l)         \

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