Commit d80c19df5fcceb8c741e96f09f275c2da719efef
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1d80cac0fe
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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>
Showing 1 changed file with 2 additions and 2 deletions Side-by-side Diff
kernel/lockdep_internals.h
... | ... | @@ -54,9 +54,9 @@ |
54 | 54 | * table (if it's not there yet), and we check it for lock order |
55 | 55 | * conflicts and deadlocks. |
56 | 56 | */ |
57 | -#define MAX_LOCKDEP_ENTRIES 8192UL | |
57 | +#define MAX_LOCKDEP_ENTRIES 16384UL | |
58 | 58 | |
59 | -#define MAX_LOCKDEP_CHAINS_BITS 14 | |
59 | +#define MAX_LOCKDEP_CHAINS_BITS 15 | |
60 | 60 | #define MAX_LOCKDEP_CHAINS (1UL << MAX_LOCKDEP_CHAINS_BITS) |
61 | 61 | |
62 | 62 | #define MAX_LOCKDEP_CHAIN_HLOCKS (MAX_LOCKDEP_CHAINS*5) |