1#include <stddef.h>
 2#include <stdbool.h>
 3#include <linux/compiler.h>
 4#include <linux/lockdep.h>
 5#include <unistd.h>
 6#include <sys/syscall.h>
 7
 8static __thread struct task_struct current_obj;
 9
10/* lockdep wants these */
11bool debug_locks = true;
12bool debug_locks_silent;
13
14__attribute__((constructor)) static void liblockdep_init(void)
15{
16	lockdep_init();
17}
18
19__attribute__((destructor)) static void liblockdep_exit(void)
20{
21	debug_check_no_locks_held(&current_obj);
22}
23
24struct task_struct *__curr(void)
25{
26	if (current_obj.pid == 0) {
27		/* Makes lockdep output pretty */
28		prctl(PR_GET_NAME, current_obj.comm);
29		current_obj.pid = syscall(__NR_gettid);
30	}
31
32	return &current_obj;
33}