diff options
| author | Huang, Ying <ying.huang@intel.com> | 2008-06-23 11:20:54 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-06-24 01:28:20 +0200 |
| commit | cd1a28e8457e6ebf72c48d84d4e736307e86436e (patch) | |
| tree | 09371914495f7e3803016516ba887b593ea64a9b /kernel/lockdep_proc.c | |
| parent | 443cd507ce7f78c6f8742b72736585c031d5a921 (diff) | |
| download | lwn-cd1a28e8457e6ebf72c48d84d4e736307e86436e.tar.gz lwn-cd1a28e8457e6ebf72c48d84d4e736307e86436e.zip | |
lockdep: add lock_class information to lock_chain and output it
It is based on x86/master branch of git-x86 tree, and has been tested
on x86_64 platform.
ChangeLog:
v2:
- Enclosing proc file system related code into CONFIG_PROVE_LOCKING.
- Fix nr_chain_hlocks update code.
Signed-off-by: Huang Ying <ying.huang@intel.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/lockdep_proc.c')
| -rw-r--r-- | kernel/lockdep_proc.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/kernel/lockdep_proc.c b/kernel/lockdep_proc.c index 14d052c8a835..9b0e940e2545 100644 --- a/kernel/lockdep_proc.c +++ b/kernel/lockdep_proc.c @@ -178,6 +178,7 @@ static const struct file_operations proc_lockdep_operations = { .release = seq_release, }; +#ifdef CONFIG_PROVE_LOCKING static void *lc_next(struct seq_file *m, void *v, loff_t *pos) { struct lock_chain *chain; @@ -264,6 +265,7 @@ static const struct file_operations proc_lockdep_chains_operations = { .llseek = seq_lseek, .release = seq_release, }; +#endif /* CONFIG_PROVE_LOCKING */ static void lockdep_stats_debug_show(struct seq_file *m) { @@ -382,7 +384,7 @@ static int lockdep_stats_show(struct seq_file *m, void *v) seq_printf(m, " dependency chains: %11lu [max: %lu]\n", nr_lock_chains, MAX_LOCKDEP_CHAINS); seq_printf(m, " dependency chain hlocks: %11d [max: %lu]\n", - atomic_read(&nr_chain_hlocks), MAX_LOCKDEP_CHAIN_HLOCKS); + nr_chain_hlocks, MAX_LOCKDEP_CHAIN_HLOCKS); #endif #ifdef CONFIG_TRACE_IRQFLAGS @@ -750,8 +752,10 @@ static const struct file_operations proc_lock_stat_operations = { static int __init lockdep_proc_init(void) { proc_create("lockdep", S_IRUSR, NULL, &proc_lockdep_operations); +#ifdef CONFIG_PROVE_LOCKING proc_create("lockdep_chains", S_IRUSR, NULL, &proc_lockdep_chains_operations); +#endif proc_create("lockdep_stats", S_IRUSR, NULL, &proc_lockdep_stats_operations); |