tools/testing/selftests/bpf/prog_tests/spinlock.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <test_progs.h>
   3
   4 void test_spinlock(void)
   5 {
   6         const char *file = "./test_spin_lock.o";
   7         pthread_t thread_id[4];
   8         struct bpf_object *obj = NULL;
   9         int prog_fd;
  10         int err = 0, i;
  11         void *ret;
  12
  13         err = bpf_prog_load(file, BPF_PROG_TYPE_CGROUP_SKB, &obj, &prog_fd);
  14         if (err) {
  15                 printf("test_spin_lock:bpf_prog_load errno %d\n", errno);
  16                 goto close_prog;
  17         }
  18         for (i = 0; i < 4; i++)
  19                 assert(pthread_create(&thread_id[i], NULL,
  20                                       &spin_lock_thread, &prog_fd) == 0);
  21         for (i = 0; i < 4; i++)
  22                 assert(pthread_join(thread_id[i], &ret) == 0 &&
  23                        ret == (void *)&prog_fd);
  24         goto close_prog_noerr;
  25 close_prog:
  26         error_cnt++;
  27 close_prog_noerr:
  28         bpf_object__close(obj);
  29 }