[PATCH] lockdep: double the number of stack-trace entries

Miles Lane reported the "BUG: MAX_STACK_TRACE_ENTRIES too low!" message,
which means that during normal use his system produced enough lockdep
events so that the 128-thousand entries stack-trace array got exhausted.
Double the size of the array.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Miles Lane <miles.lane@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/kernel/lockdep_internals.h b/kernel/lockdep_internals.h
index 0d355f24fe04f8b0292d2fd79b8319a7f690315e..eab043c83bb2d1859e2e1c295737f8ac9386bcca 100644 (file)
--- a/kernel/lockdep_internals.h
+++ b/kernel/lockdep_internals.h
@@ -27,7 +27,7 @@
  * Stack-trace: tightly packed array of stack backtrace
  * addresses. Protected by the hash_lock.
  */
-#define MAX_STACK_TRACE_ENTRIES        131072UL
+#define MAX_STACK_TRACE_ENTRIES        262144UL
 
 extern struct list_head all_lock_classes;