• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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 
8 static __thread struct task_struct current_obj;
9 
10 /* lockdep wants these */
11 bool debug_locks = true;
12 bool debug_locks_silent;
13 
liblockdep_init(void)14 __attribute__((constructor)) static void liblockdep_init(void)
15 {
16 	lockdep_init();
17 }
18 
liblockdep_exit(void)19 __attribute__((destructor)) static void liblockdep_exit(void)
20 {
21 	debug_check_no_locks_held(&current_obj);
22 }
23 
__curr(void)24 struct 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 }
34