[net-next-2.6.git] / kernel / lockdep_proc.c

/*
 * kernel/lockdep_proc.c
 *
 * Runtime locking correctness validator
 *
 * Started by Ingo Molnar:
 *
 *  Copyright (C) 2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>
 *
 * Code for /proc/lockdep and /proc/lockdep_stats:
 *
 */
#include <linux/sched.h>
#include <linux/module.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/kallsyms.h>
#include <linux/debug_locks.h>

#include "lockdep_internals.h"

static void *l_next(struct seq_file *m, void *v, loff_t *pos)
{
	struct lock_class *class = v;

	(*pos)++;

	if (class->lock_entry.next != &all_lock_classes)
		class = list_entry(class->lock_entry.next, struct lock_class,
				  lock_entry);
	else
		class = NULL;
	m->private = class;

	return class;
}

static void *l_start(struct seq_file *m, loff_t *pos)
{
	struct lock_class *class = m->private;

	if (&class->lock_entry == all_lock_classes.next)
		seq_printf(m, "all lock classes:\n");

	return class;
}

static void l_stop(struct seq_file *m, void *v)
{
}

static unsigned long count_forward_deps(struct lock_class *class)
{
	struct lock_list *entry;
	unsigned long ret = 1;

	/*
	 * Recurse this class's dependency list:
	 */
	list_for_each_entry(entry, &class->locks_after, entry)
		ret += count_forward_deps(entry->class);

	return ret;
}

static unsigned long count_backward_deps(struct lock_class *class)
{
	struct lock_list *entry;
	unsigned long ret = 1;

	/*
	 * Recurse this class's dependency list:
	 */
	list_for_each_entry(entry, &class->locks_before, entry)
		ret += count_backward_deps(entry->class);

	return ret;
}

static int l_show(struct seq_file *m, void *v)
{
	unsigned long nr_forward_deps, nr_backward_deps;
	struct lock_class *class = m->private;
	char str[128], c1, c2, c3, c4;
	const char *name;

	seq_printf(m, "%p", class->key);
#ifdef CONFIG_DEBUG_LOCKDEP
	seq_printf(m, " OPS:%8ld", class->ops);
#endif
	nr_forward_deps = count_forward_deps(class);
	seq_printf(m, " FD:%5ld", nr_forward_deps);

	nr_backward_deps = count_backward_deps(class);
	seq_printf(m, " BD:%5ld", nr_backward_deps);

	get_usage_chars(class, &c1, &c2, &c3, &c4);
	seq_printf(m, " %c%c%c%c", c1, c2, c3, c4);

	name = class->name;
	if (!name) {
		name = __get_key_name(class->key, str);
		seq_printf(m, ": %s", name);
	} else{
		seq_printf(m, ": %s", name);
		if (class->name_version > 1)
			seq_printf(m, "#%d", class->name_version);
		if (class->subclass)
			seq_printf(m, "/%d", class->subclass);
	}
	seq_puts(m, "\n");

	return 0;
}

static const struct seq_operations lockdep_ops = {
	.start	= l_start,
	.next	= l_next,
	.stop	= l_stop,
	.show	= l_show,
};

static int lockdep_open(struct inode *inode, struct file *file)
{
	int res = seq_open(file, &lockdep_ops);
	if (!res) {
		struct seq_file *m = file->private_data;

		if (!list_empty(&all_lock_classes))
			m->private = list_entry(all_lock_classes.next,
					struct lock_class, lock_entry);
		else
			m->private = NULL;
	}
	return res;
}

static const struct file_operations proc_lockdep_operations = {
	.open		= lockdep_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= seq_release,
};

static void lockdep_stats_debug_show(struct seq_file *m)
{
#ifdef CONFIG_DEBUG_LOCKDEP
	unsigned int hi1 = debug_atomic_read(&hardirqs_on_events),
		     hi2 = debug_atomic_read(&hardirqs_off_events),
		     hr1 = debug_atomic_read(&redundant_hardirqs_on),
		     hr2 = debug_atomic_read(&redundant_hardirqs_off),
		     si1 = debug_atomic_read(&softirqs_on_events),
		     si2 = debug_atomic_read(&softirqs_off_events),
		     sr1 = debug_atomic_read(&redundant_softirqs_on),
		     sr2 = debug_atomic_read(&redundant_softirqs_off);

	seq_printf(m, " chain lookup misses:           %11u\n",
		debug_atomic_read(&chain_lookup_misses));
	seq_printf(m, " chain lookup hits:             %11u\n",
		debug_atomic_read(&chain_lookup_hits));
	seq_printf(m, " cyclic checks:                 %11u\n",
		debug_atomic_read(&nr_cyclic_checks));
	seq_printf(m, " cyclic-check recursions:       %11u\n",
		debug_atomic_read(&nr_cyclic_check_recursions));
	seq_printf(m, " find-mask forwards checks:     %11u\n",
		debug_atomic_read(&nr_find_usage_forwards_checks));
	seq_printf(m, " find-mask forwards recursions: %11u\n",
		debug_atomic_read(&nr_find_usage_forwards_recursions));
	seq_printf(m, " find-mask backwards checks:    %11u\n",
		debug_atomic_read(&nr_find_usage_backwards_checks));
	seq_printf(m, " find-mask backwards recursions:%11u\n",
		debug_atomic_read(&nr_find_usage_backwards_recursions));

	seq_printf(m, " hardirq on events:             %11u\n", hi1);
	seq_printf(m, " hardirq off events:            %11u\n", hi2);
	seq_printf(m, " redundant hardirq ons:         %11u\n", hr1);
	seq_printf(m, " redundant hardirq offs:        %11u\n", hr2);
	seq_printf(m, " softirq on events:             %11u\n", si1);
	seq_printf(m, " softirq off events:            %11u\n", si2);
	seq_printf(m, " redundant softirq ons:         %11u\n", sr1);
	seq_printf(m, " redundant softirq offs:        %11u\n", sr2);
#endif
}

static int lockdep_stats_show(struct seq_file *m, void *v)
{
	struct lock_class *class;
	unsigned long nr_unused = 0, nr_uncategorized = 0,
		      nr_irq_safe = 0, nr_irq_unsafe = 0,
		      nr_softirq_safe = 0, nr_softirq_unsafe = 0,
		      nr_hardirq_safe = 0, nr_hardirq_unsafe = 0,
		      nr_irq_read_safe = 0, nr_irq_read_unsafe = 0,
		      nr_softirq_read_safe = 0, nr_softirq_read_unsafe = 0,
		      nr_hardirq_read_safe = 0, nr_hardirq_read_unsafe = 0,
		      sum_forward_deps = 0, factor = 0;

	list_for_each_entry(class, &all_lock_classes, lock_entry) {

		if (class->usage_mask == 0)
			nr_unused++;
		if (class->usage_mask == LOCKF_USED)
			nr_uncategorized++;
		if (class->usage_mask & LOCKF_USED_IN_IRQ)
			nr_irq_safe++;
		if (class->usage_mask & LOCKF_ENABLED_IRQS)
			nr_irq_unsafe++;
		if (class->usage_mask & LOCKF_USED_IN_SOFTIRQ)
			nr_softirq_safe++;
		if (class->usage_mask & LOCKF_ENABLED_SOFTIRQS)
			nr_softirq_unsafe++;
		if (class->usage_mask & LOCKF_USED_IN_HARDIRQ)
			nr_hardirq_safe++;
		if (class->usage_mask & LOCKF_ENABLED_HARDIRQS)
			nr_hardirq_unsafe++;
		if (class->usage_mask & LOCKF_USED_IN_IRQ_READ)
			nr_irq_read_safe++;
		if (class->usage_mask & LOCKF_ENABLED_IRQS_READ)
			nr_irq_read_unsafe++;
		if (class->usage_mask & LOCKF_USED_IN_SOFTIRQ_READ)
			nr_softirq_read_safe++;
		if (class->usage_mask & LOCKF_ENABLED_SOFTIRQS_READ)
			nr_softirq_read_unsafe++;
		if (class->usage_mask & LOCKF_USED_IN_HARDIRQ_READ)
			nr_hardirq_read_safe++;
		if (class->usage_mask & LOCKF_ENABLED_HARDIRQS_READ)
			nr_hardirq_read_unsafe++;

		sum_forward_deps += count_forward_deps(class);
	}
#ifdef CONFIG_LOCKDEP_DEBUG
	DEBUG_LOCKS_WARN_ON(debug_atomic_read(&nr_unused_locks) != nr_unused);
#endif
	seq_printf(m, " lock-classes:                  %11lu [max: %lu]\n",
			nr_lock_classes, MAX_LOCKDEP_KEYS);
	seq_printf(m, " direct dependencies:           %11lu [max: %lu]\n",
			nr_list_entries, MAX_LOCKDEP_ENTRIES);
	seq_printf(m, " indirect dependencies:         %11lu\n",
			sum_forward_deps);

	/*
	 * Total number of dependencies:
	 *
	 * All irq-safe locks may nest inside irq-unsafe locks,
	 * plus all the other known dependencies:
	 */
	seq_printf(m, " all direct dependencies:       %11lu\n",
			nr_irq_unsafe * nr_irq_safe +
			nr_hardirq_unsafe * nr_hardirq_safe +
			nr_list_entries);

	/*
	 * Estimated factor between direct and indirect
	 * dependencies:
	 */
	if (nr_list_entries)
		factor = sum_forward_deps / nr_list_entries;

	seq_printf(m, " dependency chains:             %11lu [max: %lu]\n",
			nr_lock_chains, MAX_LOCKDEP_CHAINS);

#ifdef CONFIG_TRACE_IRQFLAGS
	seq_printf(m, " in-hardirq chains:             %11u\n",
			nr_hardirq_chains);
	seq_printf(m, " in-softirq chains:             %11u\n",
			nr_softirq_chains);
#endif
	seq_printf(m, " in-process chains:             %11u\n",
			nr_process_chains);
	seq_printf(m, " stack-trace entries:           %11lu [max: %lu]\n",
			nr_stack_trace_entries, MAX_STACK_TRACE_ENTRIES);
	seq_printf(m, " combined max dependencies:     %11u\n",
			(nr_hardirq_chains + 1) *
			(nr_softirq_chains + 1) *
			(nr_process_chains + 1)
	);
	seq_printf(m, " hardirq-safe locks:            %11lu\n",
			nr_hardirq_safe);
	seq_printf(m, " hardirq-unsafe locks:          %11lu\n",
			nr_hardirq_unsafe);
	seq_printf(m, " softirq-safe locks:            %11lu\n",
			nr_softirq_safe);
	seq_printf(m, " softirq-unsafe locks:          %11lu\n",
			nr_softirq_unsafe);
	seq_printf(m, " irq-safe locks:                %11lu\n",
			nr_irq_safe);
	seq_printf(m, " irq-unsafe locks:              %11lu\n",
			nr_irq_unsafe);

	seq_printf(m, " hardirq-read-safe locks:       %11lu\n",
			nr_hardirq_read_safe);
	seq_printf(m, " hardirq-read-unsafe locks:     %11lu\n",
			nr_hardirq_read_unsafe);
	seq_printf(m, " softirq-read-safe locks:       %11lu\n",
			nr_softirq_read_safe);
	seq_printf(m, " softirq-read-unsafe locks:     %11lu\n",
			nr_softirq_read_unsafe);
	seq_printf(m, " irq-read-safe locks:           %11lu\n",
			nr_irq_read_safe);
	seq_printf(m, " irq-read-unsafe locks:         %11lu\n",
			nr_irq_read_unsafe);

	seq_printf(m, " uncategorized locks:           %11lu\n",
			nr_uncategorized);
	seq_printf(m, " unused locks:                  %11lu\n",
			nr_unused);
	seq_printf(m, " max locking depth:             %11u\n",
			max_lockdep_depth);
	seq_printf(m, " max recursion depth:           %11u\n",
			max_recursion_depth);
	lockdep_stats_debug_show(m);
	seq_printf(m, " debug_locks:                   %11u\n",
			debug_locks);

	return 0;
}

static int lockdep_stats_open(struct inode *inode, struct file *file)
{
	return single_open(file, lockdep_stats_show, NULL);
}

static const struct file_operations proc_lockdep_stats_operations = {
	.open		= lockdep_stats_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= seq_release,
};

static int __init lockdep_proc_init(void)
{
	struct proc_dir_entry *entry;

	entry = create_proc_entry("lockdep", S_IRUSR, NULL);
	if (entry)
		entry->proc_fops = &proc_lockdep_operations;

	entry = create_proc_entry("lockdep_stats", S_IRUSR, NULL);
	if (entry)
		entry->proc_fops = &proc_lockdep_stats_operations;

	return 0;
}

__initcall(lockdep_proc_init);
Commit	Line	Data
a8f24a39 IM	1	/*
	2	* kernel/lockdep_proc.c
	3	*
	4	* Runtime locking correctness validator
	5	*
	6	* Started by Ingo Molnar:
	7	*
	8	* Copyright (C) 2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>
	9	*
	10	* Code for /proc/lockdep and /proc/lockdep_stats:
	11	*
	12	*/
	13	#include <linux/sched.h>
	14	#include <linux/module.h>
	15	#include <linux/proc_fs.h>
	16	#include <linux/seq_file.h>
	17	#include <linux/kallsyms.h>
	18	#include <linux/debug_locks.h>
	19
	20	#include "lockdep_internals.h"
	21
	22	static void l_next(struct seq_file m, void v, loff_t pos)
	23	{
	24	struct lock_class *class = v;
	25
	26	(*pos)++;
	27
	28	if (class->lock_entry.next != &all_lock_classes)
	29	class = list_entry(class->lock_entry.next, struct lock_class,
	30	lock_entry);
	31	else
	32	class = NULL;
	33	m->private = class;
	34
	35	return class;
	36	}
	37
	38	static void l_start(struct seq_file m, loff_t *pos)
	39	{
	40	struct lock_class *class = m->private;
	41
	42	if (&class->lock_entry == all_lock_classes.next)
	43	seq_printf(m, "all lock classes:\n");
	44
	45	return class;
	46	}
	47
	48	static void l_stop(struct seq_file m, void v)
	49	{
	50	}
	51
	52	static unsigned long count_forward_deps(struct lock_class *class)
	53	{
	54	struct lock_list *entry;
	55	unsigned long ret = 1;
	56
	57	/*
	58	* Recurse this class's dependency list:
	59	*/
	60	list_for_each_entry(entry, &class->locks_after, entry)
	61	ret += count_forward_deps(entry->class);
	62
	63	return ret;
	64	}
65
66	static unsigned long count_backward_deps(struct lock_class *class)
67	{
68	struct lock_list *entry;
69	unsigned long ret = 1;
70
71	/*
72	* Recurse this class's dependency list:
73	*/
74	list_for_each_entry(entry, &class->locks_before, entry)
75	ret += count_backward_deps(entry->class);
76
77	return ret;
78	}
79
80	static int l_show(struct seq_file m, void v)
81	{
82	unsigned long nr_forward_deps, nr_backward_deps;
83	struct lock_class *class = m->private;
84	char str[128], c1, c2, c3, c4;
85	const char *name;
86
87	seq_printf(m, "%p", class->key);
88	#ifdef CONFIG_DEBUG_LOCKDEP
89	seq_printf(m, " OPS:%8ld", class->ops);
90	#endif
91	nr_forward_deps = count_forward_deps(class);
92	seq_printf(m, " FD:%5ld", nr_forward_deps);
93
94	nr_backward_deps = count_backward_deps(class);
95	seq_printf(m, " BD:%5ld", nr_backward_deps);
96
97	get_usage_chars(class, &c1, &c2, &c3, &c4);
98	seq_printf(m, " %c%c%c%c", c1, c2, c3, c4);
99
100	name = class->name;
101	if (!name) {
102	name = __get_key_name(class->key, str);
103	seq_printf(m, ": %s", name);
104	} else{
105	seq_printf(m, ": %s", name);
106	if (class->name_version > 1)
107	seq_printf(m, "#%d", class->name_version);
108	if (class->subclass)
109	seq_printf(m, "/%d", class->subclass);
110	}
111	seq_puts(m, "\n");
112
113	return 0;
114	}
115
15ad7cdc	116	static const struct seq_operations lockdep_ops = {
a8f24a39 IM	117	.start = l_start,
	118	.next = l_next,
	119	.stop = l_stop,
	120	.show = l_show,
	121	};
	122
	123	static int lockdep_open(struct inode inode, struct file file)
	124	{
	125	int res = seq_open(file, &lockdep_ops);
	126	if (!res) {
	127	struct seq_file *m = file->private_data;
	128
	129	if (!list_empty(&all_lock_classes))
	130	m->private = list_entry(all_lock_classes.next,
	131	struct lock_class, lock_entry);
	132	else
	133	m->private = NULL;
	134	}
	135	return res;
	136	}
	137
15ad7cdc	138	static const struct file_operations proc_lockdep_operations = {
a8f24a39 IM	139	.open = lockdep_open,
	140	.read = seq_read,
	141	.llseek = seq_lseek,
	142	.release = seq_release,
	143	};
	144
	145	static void lockdep_stats_debug_show(struct seq_file *m)
	146	{
	147	#ifdef CONFIG_DEBUG_LOCKDEP
	148	unsigned int hi1 = debug_atomic_read(&hardirqs_on_events),
	149	hi2 = debug_atomic_read(&hardirqs_off_events),
	150	hr1 = debug_atomic_read(&redundant_hardirqs_on),
	151	hr2 = debug_atomic_read(&redundant_hardirqs_off),
	152	si1 = debug_atomic_read(&softirqs_on_events),
	153	si2 = debug_atomic_read(&softirqs_off_events),
	154	sr1 = debug_atomic_read(&redundant_softirqs_on),
	155	sr2 = debug_atomic_read(&redundant_softirqs_off);
	156
	157	seq_printf(m, " chain lookup misses: %11u\n",
	158	debug_atomic_read(&chain_lookup_misses));
	159	seq_printf(m, " chain lookup hits: %11u\n",
	160	debug_atomic_read(&chain_lookup_hits));
	161	seq_printf(m, " cyclic checks: %11u\n",
	162	debug_atomic_read(&nr_cyclic_checks));
	163	seq_printf(m, " cyclic-check recursions: %11u\n",
	164	debug_atomic_read(&nr_cyclic_check_recursions));
	165	seq_printf(m, " find-mask forwards checks: %11u\n",
	166	debug_atomic_read(&nr_find_usage_forwards_checks));
	167	seq_printf(m, " find-mask forwards recursions: %11u\n",
	168	debug_atomic_read(&nr_find_usage_forwards_recursions));
	169	seq_printf(m, " find-mask backwards checks: %11u\n",
	170	debug_atomic_read(&nr_find_usage_backwards_checks));
	171	seq_printf(m, " find-mask backwards recursions:%11u\n",
	172	debug_atomic_read(&nr_find_usage_backwards_recursions));
	173
	174	seq_printf(m, " hardirq on events: %11u\n", hi1);
	175	seq_printf(m, " hardirq off events: %11u\n", hi2);
	176	seq_printf(m, " redundant hardirq ons: %11u\n", hr1);
	177	seq_printf(m, " redundant hardirq offs: %11u\n", hr2);
	178	seq_printf(m, " softirq on events: %11u\n", si1);
	179	seq_printf(m, " softirq off events: %11u\n", si2);
	180	seq_printf(m, " redundant softirq ons: %11u\n", sr1);
	181	seq_printf(m, " redundant softirq offs: %11u\n", sr2);
	182	#endif
	183	}
	184
	185	static int lockdep_stats_show(struct seq_file m, void v)
	186	{
	187	struct lock_class *class;
	188	unsigned long nr_unused = 0, nr_uncategorized = 0,
	189	nr_irq_safe = 0, nr_irq_unsafe = 0,
	190	nr_softirq_safe = 0, nr_softirq_unsafe = 0,
	191	nr_hardirq_safe = 0, nr_hardirq_unsafe = 0,
	192	nr_irq_read_safe = 0, nr_irq_read_unsafe = 0,
	193	nr_softirq_read_safe = 0, nr_softirq_read_unsafe = 0,
	194	nr_hardirq_read_safe = 0, nr_hardirq_read_unsafe = 0,
	195	sum_forward_deps = 0, factor = 0;
	196
	197	list_for_each_entry(class, &all_lock_classes, lock_entry) {
	198
	199	if (class->usage_mask == 0)
	200	nr_unused++;
	201	if (class->usage_mask == LOCKF_USED)
	202	nr_uncategorized++;
203	if (class->usage_mask & LOCKF_USED_IN_IRQ)
204	nr_irq_safe++;
205	if (class->usage_mask & LOCKF_ENABLED_IRQS)
206	nr_irq_unsafe++;
207	if (class->usage_mask & LOCKF_USED_IN_SOFTIRQ)
208	nr_softirq_safe++;
209	if (class->usage_mask & LOCKF_ENABLED_SOFTIRQS)
210	nr_softirq_unsafe++;
211	if (class->usage_mask & LOCKF_USED_IN_HARDIRQ)
212	nr_hardirq_safe++;
213	if (class->usage_mask & LOCKF_ENABLED_HARDIRQS)
214	nr_hardirq_unsafe++;
215	if (class->usage_mask & LOCKF_USED_IN_IRQ_READ)
216	nr_irq_read_safe++;
217	if (class->usage_mask & LOCKF_ENABLED_IRQS_READ)
218	nr_irq_read_unsafe++;
219	if (class->usage_mask & LOCKF_USED_IN_SOFTIRQ_READ)
220	nr_softirq_read_safe++;
221	if (class->usage_mask & LOCKF_ENABLED_SOFTIRQS_READ)
222	nr_softirq_read_unsafe++;
223	if (class->usage_mask & LOCKF_USED_IN_HARDIRQ_READ)
224	nr_hardirq_read_safe++;
225	if (class->usage_mask & LOCKF_ENABLED_HARDIRQS_READ)
226	nr_hardirq_read_unsafe++;
227
228	sum_forward_deps += count_forward_deps(class);
229	}
230	#ifdef CONFIG_LOCKDEP_DEBUG
231	DEBUG_LOCKS_WARN_ON(debug_atomic_read(&nr_unused_locks) != nr_unused);
232	#endif
233	seq_printf(m, " lock-classes: %11lu [max: %lu]\n",
234	nr_lock_classes, MAX_LOCKDEP_KEYS);
235	seq_printf(m, " direct dependencies: %11lu [max: %lu]\n",
236	nr_list_entries, MAX_LOCKDEP_ENTRIES);
237	seq_printf(m, " indirect dependencies: %11lu\n",
238	sum_forward_deps);
239
240	/*
241	* Total number of dependencies:
242	*
243	* All irq-safe locks may nest inside irq-unsafe locks,
244	* plus all the other known dependencies:
245	*/
246	seq_printf(m, " all direct dependencies: %11lu\n",
247	nr_irq_unsafe * nr_irq_safe +
248	nr_hardirq_unsafe * nr_hardirq_safe +
249	nr_list_entries);
250
251	/*
252	* Estimated factor between direct and indirect
253	* dependencies:
254	*/
255	if (nr_list_entries)
256	factor = sum_forward_deps / nr_list_entries;
257
258	seq_printf(m, " dependency chains: %11lu [max: %lu]\n",
259	nr_lock_chains, MAX_LOCKDEP_CHAINS);
260
261	#ifdef CONFIG_TRACE_IRQFLAGS
262	seq_printf(m, " in-hardirq chains: %11u\n",
263	nr_hardirq_chains);
264	seq_printf(m, " in-softirq chains: %11u\n",
265	nr_softirq_chains);
266	#endif
267	seq_printf(m, " in-process chains: %11u\n",
268	nr_process_chains);
269	seq_printf(m, " stack-trace entries: %11lu [max: %lu]\n",
270	nr_stack_trace_entries, MAX_STACK_TRACE_ENTRIES);
271	seq_printf(m, " combined max dependencies: %11u\n",
272	(nr_hardirq_chains + 1) *
273	(nr_softirq_chains + 1) *
274	(nr_process_chains + 1)
275	);
276	seq_printf(m, " hardirq-safe locks: %11lu\n",
277	nr_hardirq_safe);
278	seq_printf(m, " hardirq-unsafe locks: %11lu\n",
279	nr_hardirq_unsafe);
280	seq_printf(m, " softirq-safe locks: %11lu\n",
281	nr_softirq_safe);
282	seq_printf(m, " softirq-unsafe locks: %11lu\n",
283	nr_softirq_unsafe);
284	seq_printf(m, " irq-safe locks: %11lu\n",
285	nr_irq_safe);
286	seq_printf(m, " irq-unsafe locks: %11lu\n",
287	nr_irq_unsafe);
288
289	seq_printf(m, " hardirq-read-safe locks: %11lu\n",
290	nr_hardirq_read_safe);
291	seq_printf(m, " hardirq-read-unsafe locks: %11lu\n",
292	nr_hardirq_read_unsafe);
293	seq_printf(m, " softirq-read-safe locks: %11lu\n",
294	nr_softirq_read_safe);
295	seq_printf(m, " softirq-read-unsafe locks: %11lu\n",
296	nr_softirq_read_unsafe);
297	seq_printf(m, " irq-read-safe locks: %11lu\n",
298	nr_irq_read_safe);
299	seq_printf(m, " irq-read-unsafe locks: %11lu\n",
300	nr_irq_read_unsafe);
301
302	seq_printf(m, " uncategorized locks: %11lu\n",
303	nr_uncategorized);
304	seq_printf(m, " unused locks: %11lu\n",
305	nr_unused);
306	seq_printf(m, " max locking depth: %11u\n",
307	max_lockdep_depth);
308	seq_printf(m, " max recursion depth: %11u\n",
309	max_recursion_depth);
310	lockdep_stats_debug_show(m);
311	seq_printf(m, " debug_locks: %11u\n",
312	debug_locks);
313
314	return 0;
315	}
316
317	static int lockdep_stats_open(struct inode inode, struct file file)
318	{
319	return single_open(file, lockdep_stats_show, NULL);
320	}
321
15ad7cdc	322	static const struct file_operations proc_lockdep_stats_operations = {
a8f24a39 IM	323	.open = lockdep_stats_open,
	324	.read = seq_read,
	325	.llseek = seq_lseek,
	326	.release = seq_release,
	327	};
	328
	329	static int __init lockdep_proc_init(void)
	330	{
	331	struct proc_dir_entry *entry;
	332
	333	entry = create_proc_entry("lockdep", S_IRUSR, NULL);
	334	if (entry)
	335	entry->proc_fops = &proc_lockdep_operations;
	336
	337	entry = create_proc_entry("lockdep_stats", S_IRUSR, NULL);
	338	if (entry)
	339	entry->proc_fops = &proc_lockdep_stats_operations;
	340
	341	return 0;
	342	}
	343
	344	__initcall(lockdep_proc_init);
	345