diff options
Diffstat (limited to 'kernel/locking/lockdep_proc.c')
| -rw-r--r-- | kernel/locking/lockdep_proc.c | 31 |
1 files changed, 27 insertions, 4 deletions
diff --git a/kernel/locking/lockdep_proc.c b/kernel/locking/lockdep_proc.c index 231684cfc5ae..5525cd3ba0c8 100644 --- a/kernel/locking/lockdep_proc.c +++ b/kernel/locking/lockdep_proc.c @@ -128,15 +128,22 @@ static int lc_show(struct seq_file *m, void *v) struct lock_chain *chain = v; struct lock_class *class; int i; + static const char * const irq_strs[] = { + [0] = "0", + [LOCK_CHAIN_HARDIRQ_CONTEXT] = "hardirq", + [LOCK_CHAIN_SOFTIRQ_CONTEXT] = "softirq", + [LOCK_CHAIN_SOFTIRQ_CONTEXT| + LOCK_CHAIN_HARDIRQ_CONTEXT] = "hardirq|softirq", + }; if (v == SEQ_START_TOKEN) { - if (nr_chain_hlocks > MAX_LOCKDEP_CHAIN_HLOCKS) + if (!nr_free_chain_hlocks) seq_printf(m, "(buggered) "); seq_printf(m, "all lock chains:\n"); return 0; } - seq_printf(m, "irq_context: %d\n", chain->irq_context); + seq_printf(m, "irq_context: %s\n", irq_strs[chain->irq_context]); for (i = 0; i < chain->depth; i++) { class = lock_chain_get_class(chain, i); @@ -271,8 +278,12 @@ static int lockdep_stats_show(struct seq_file *m, void *v) #ifdef CONFIG_PROVE_LOCKING seq_printf(m, " dependency chains: %11lu [max: %lu]\n", lock_chain_count(), MAX_LOCKDEP_CHAINS); - seq_printf(m, " dependency chain hlocks: %11d [max: %lu]\n", - nr_chain_hlocks, MAX_LOCKDEP_CHAIN_HLOCKS); + seq_printf(m, " dependency chain hlocks used: %11lu [max: %lu]\n", + MAX_LOCKDEP_CHAIN_HLOCKS - + (nr_free_chain_hlocks + nr_lost_chain_hlocks), + MAX_LOCKDEP_CHAIN_HLOCKS); + seq_printf(m, " dependency chain hlocks lost: %11u\n", + nr_lost_chain_hlocks); #endif #ifdef CONFIG_TRACE_IRQFLAGS @@ -336,6 +347,18 @@ static int lockdep_stats_show(struct seq_file *m, void *v) seq_printf(m, " debug_locks: %11u\n", debug_locks); + /* + * Zappped classes and lockdep data buffers reuse statistics. + */ + seq_puts(m, "\n"); + seq_printf(m, " zapped classes: %11lu\n", + nr_zapped_classes); +#ifdef CONFIG_PROVE_LOCKING + seq_printf(m, " zapped lock chains: %11lu\n", + nr_zapped_lock_chains); + seq_printf(m, " large chain blocks: %11u\n", + nr_large_chain_blocks); +#endif return 0; } |