linux-kernel - [PATCH 3/3] Increase lockdep limits: MAX_LOCKDEP_CHAINS

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Date:	Tue, 7 Jul 2009 16:25:14 +0100
From:	Joao Correia <joaomiguelcorreia@...il.com>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	Amerigo Wang <xiyou.wangcong@...il.com>, a.p.zijlstra@...llo.nl
Subject: [PATCH 3/3] Increase lockdep limits: MAX_LOCKDEP_CHAINS_BITS

(Applies to current Linus tree, as of 2.6.31-rc2)

A third limit becomes apparent as being too low after raising
MAX_STACK_TRACE_ENTRIES and MAX_LOCK_DEPTH, although this one is more
elusive to trigger.


Signed-off-by: Joao Correia <joaomiguelcorreia@...il.com>

---
 kernel/lockdep_internals.h | 2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/lockdep_internals.h b/kernel/lockdep_internals.h
index 699a2ac..93af1f1 100644
--- a/kernel/lockdep_internals.h
+++ b/kernel/lockdep_internals.h
@@ -56,7 +56,7 @@ enum {
  */
 #define MAX_LOCKDEP_ENTRIES    16384UL

-#define MAX_LOCKDEP_CHAINS_BITS        15
+#define MAX_LOCKDEP_CHAINS_BITS        16
 #define MAX_LOCKDEP_CHAINS     (1UL << MAX_LOCKDEP_CHAINS_BITS)

 #define MAX_LOCKDEP_CHAIN_HLOCKS (MAX_LOCKDEP_CHAINS*5)
---
--
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