1 // SPDX-License-Identifier: GPL-2.0
2 #include <stddef.h>
3 #include <stdbool.h>
4 #include <linux/compiler.h>
5 #include <linux/lockdep.h>
6 #include <unistd.h>
7 #include <sys/syscall.h>
8 
9 static __thread struct task_struct current_obj;
10 
11 /* lockdep wants these */
12 bool debug_locks = true;
13 bool debug_locks_silent;
14 
liblockdep_exit(void)15 __attribute__((destructor)) static void liblockdep_exit(void)
16 {
17 	debug_check_no_locks_held();
18 }
19 
__curr(void)20 struct task_struct *__curr(void)
21 {
22 	if (current_obj.pid == 0) {
23 		/* Makes lockdep output pretty */
24 		prctl(PR_GET_NAME, current_obj.comm);
25 		current_obj.pid = syscall(__NR_gettid);
26 	}
27 
28 	return &current_obj;
29 }
30