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liblockdep: Add public headers for pthread_mutex_t implementation

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These headers provide the same API as their pthread mutex
counterparts.

The design here is to allow to easily switch to liblockdep lock
validation just by adding a "liblockdep_" to pthread_mutex_*()
calls, which means that it's easy to integrate liblockdep into
existing codebases.

Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: torvalds@linux-foundation.org
Link: http://lkml.kernel.org/r/1371163284-6346-4-git-send-email-sasha.levin@oracle.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Sasha Levin 2013-06-13 18:41:18 -04:00 • committed by Ingo Molnar
commit 45e6207464
2 changed files with 120 additions and 0 deletions
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50
tools/lib/lockdep/include/liblockdep/common.h Normal file
View file

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#ifndef _LIBLOCKDEP_COMMON_H
#define _LIBLOCKDEP_COMMON_H
#include <pthread.h>
#define NR_LOCKDEP_CACHING_CLASSES 2
#define MAX_LOCKDEP_SUBCLASSES 8UL
#ifndef CALLER_ADDR0
#define CALLER_ADDR0 ((unsigned long)__builtin_return_address(0))
#endif
#ifndef _RET_IP_
#define _RET_IP_ CALLER_ADDR0
#endif
#ifndef _THIS_IP_
#define _THIS_IP_ ({ __label__ __here; __here: (unsigned long)&&__here; })
#endif
struct lockdep_subclass_key {
char __one_byte;
};
struct lock_class_key {
struct lockdep_subclass_key subkeys[MAX_LOCKDEP_SUBCLASSES];
};
struct lockdep_map {
struct lock_class_key *key;
struct lock_class *class_cache[NR_LOCKDEP_CACHING_CLASSES];
const char *name;
#ifdef CONFIG_LOCK_STAT
int cpu;
unsigned long ip;
#endif
};
void lockdep_init_map(struct lockdep_map *lock, const char *name,
struct lock_class_key *key, int subclass);
void lock_acquire(struct lockdep_map *lock, unsigned int subclass,
int trylock, int read, int check,
struct lockdep_map *nest_lock, unsigned long ip);
void lock_release(struct lockdep_map *lock, int nested,
unsigned long ip);
#define STATIC_LOCKDEP_MAP_INIT(_name, _key) \
{ .name = (_name), .key = (void *)(_key), }
#endif