From: Ingo Molnar <mingo@elte.hu>
Date: Wed, 13 Sep 2006 03:35:50 +0000 (-0700)
Subject: [PATCH] lockdep: double the number of stack-trace entries
X-Git-Tag: v2.6.18~13^2~22
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9bb25bf36f0d7b06368432e2324dbbc2e98b5e60;p=linux-2.6

[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 0d355f24fe..eab043c83b 100644
--- 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;