45e6207464
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>
50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
#ifndef _LIBLOCKDEP_COMMON_H
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#define _LIBLOCKDEP_COMMON_H
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#include <pthread.h>
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#define NR_LOCKDEP_CACHING_CLASSES 2
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#define MAX_LOCKDEP_SUBCLASSES 8UL
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#ifndef CALLER_ADDR0
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#define CALLER_ADDR0 ((unsigned long)__builtin_return_address(0))
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#endif
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#ifndef _RET_IP_
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#define _RET_IP_ CALLER_ADDR0
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#endif
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#ifndef _THIS_IP_
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#define _THIS_IP_ ({ __label__ __here; __here: (unsigned long)&&__here; })
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#endif
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struct lockdep_subclass_key {
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char __one_byte;
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};
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struct lock_class_key {
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struct lockdep_subclass_key subkeys[MAX_LOCKDEP_SUBCLASSES];
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};
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struct lockdep_map {
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struct lock_class_key *key;
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struct lock_class *class_cache[NR_LOCKDEP_CACHING_CLASSES];
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const char *name;
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#ifdef CONFIG_LOCK_STAT
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int cpu;
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unsigned long ip;
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#endif
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};
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void lockdep_init_map(struct lockdep_map *lock, const char *name,
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struct lock_class_key *key, int subclass);
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void lock_acquire(struct lockdep_map *lock, unsigned int subclass,
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int trylock, int read, int check,
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struct lockdep_map *nest_lock, unsigned long ip);
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void lock_release(struct lockdep_map *lock, int nested,
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unsigned long ip);
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#define STATIC_LOCKDEP_MAP_INIT(_name, _key) \
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{ .name = (_name), .key = (void *)(_key), }
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#endif
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