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| author | Ingo Molnar <mingo@elte.hu> | 2009-05-12 16:29:13 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-05-12 19:59:52 +0200 |
| commit | d80c19df5fcceb8c741e96f09f275c2da719efef (patch) | |
| tree | 42062e06bd531ad89c9019a341c6b6c26062edfd /kernel/lockdep_internals.h | |
| parent | 1d80cac0fe44fb87b2a3d35fddd7f534ea81cd90 (diff) | |
| download | lwn-d80c19df5fcceb8c741e96f09f275c2da719efef.tar.gz lwn-d80c19df5fcceb8c741e96f09f275c2da719efef.zip | |
lockdep: increase MAX_LOCKDEP_ENTRIES and MAX_LOCKDEP_CHAINS
Now that lockdep coverage has increased it has become easier to
run out of entries:
[ 21.401387] BUG: MAX_LOCKDEP_ENTRIES too low!
[ 21.402007] turning off the locking correctness validator.
[ 21.402007] Pid: 1555, comm: S99local Not tainted 2.6.30-rc5-tip #2
[ 21.402007] Call Trace:
[ 21.402007] [<ffffffff81069789>] add_lock_to_list+0x53/0xba
[ 21.402007] [<ffffffff810eb615>] ? lookup_mnt+0x19/0x53
[ 21.402007] [<ffffffff8106be14>] check_prev_add+0x14b/0x1c7
[ 21.402007] [<ffffffff8106c304>] validate_chain+0x474/0x52a
[ 21.402007] [<ffffffff8106c6fc>] __lock_acquire+0x342/0x3c7
[ 21.402007] [<ffffffff8106c842>] lock_acquire+0xc1/0xe5
[ 21.402007] [<ffffffff810eb615>] ? lookup_mnt+0x19/0x53
[ 21.402007] [<ffffffff8153aedc>] _spin_lock+0x31/0x66
Double the size - as we've done in the past.
[ Impact: allow lockdep to cover more locks ]
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/lockdep_internals.h')
| -rw-r--r-- | kernel/lockdep_internals.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/lockdep_internals.h b/kernel/lockdep_internals.h index a2cc7e9a6e84..699a2ac3a0d7 100644 --- a/kernel/lockdep_internals.h +++ b/kernel/lockdep_internals.h @@ -54,9 +54,9 @@ enum { * table (if it's not there yet), and we check it for lock order * conflicts and deadlocks. */ -#define MAX_LOCKDEP_ENTRIES 8192UL +#define MAX_LOCKDEP_ENTRIES 16384UL -#define MAX_LOCKDEP_CHAINS_BITS 14 +#define MAX_LOCKDEP_CHAINS_BITS 15 #define MAX_LOCKDEP_CHAINS (1UL << MAX_LOCKDEP_CHAINS_BITS) #define MAX_LOCKDEP_CHAIN_HLOCKS (MAX_LOCKDEP_CHAINS*5) |