linux-master/lib/test_lockup.c

108 static unsigned long lock_rwsem_ptr;
109 module_param_unsafe(lock_rwsem_ptr, ulong, 0400);
110 MODULE_PARM_DESC(lock_rwsem_ptr, "lock rw_semaphore at address");
182 	if (lock_rwsem_ptr && master) {
185 				  (void *)lock_rwsem_ptr);
187 			down_read((struct rw_semaphore *)lock_rwsem_ptr);
189 			down_write((struct rw_semaphore *)lock_rwsem_ptr);
286 	if (lock_rwsem_ptr && master) {
288 			up_read((struct rw_semaphore *)lock_rwsem_ptr);
290 			up_write((struct rw_semaphore *)lock_rwsem_ptr);
293 				  (void *)lock_rwsem_ptr);
484 	    test_kernel_ptr(lock_rwsem_ptr, sizeof(struct rw_semaphore)))
498 	    test_magic(lock_rwsem_ptr,
512 	    test_magic(lock_rwsem_ptr,
548 		lock_rwsem_ptr = (unsigned long)&test_inode->i_rwsem;
551 		lock_rwsem_ptr = (unsigned long)&test_file->f_mapping->i_mmap_rwsem;
554 		lock_rwsem_ptr = (unsigned long)&test_inode->i_sb->s_umount;