perf-hooks.c 988 B

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  1. // SPDX-License-Identifier: GPL-2.0
  2. #include <signal.h>
  3. #include <stdlib.h>
  4. #include "tests.h"
  5. #include "debug.h"
  6. #include "perf-hooks.h"
  7. static void sigsegv_handler(int sig __maybe_unused)
  8. {
  9. pr_debug("SIGSEGV is observed as expected, try to recover.\n");
  10. perf_hooks__recover();
  11. signal(SIGSEGV, SIG_DFL);
  12. raise(SIGSEGV);
  13. exit(-1);
  14. }
  15. static void the_hook(void *_hook_flags)
  16. {
  17. int *hook_flags = _hook_flags;
  18. *hook_flags = 1234;
  19. /* Generate a segfault, test perf_hooks__recover */
  20. raise(SIGSEGV);
  21. }
  22. int test__perf_hooks(struct test *test __maybe_unused, int subtest __maybe_unused)
  23. {
  24. int hook_flags = 0;
  25. signal(SIGSEGV, sigsegv_handler);
  26. perf_hooks__set_hook("test", the_hook, &hook_flags);
  27. perf_hooks__invoke_test();
  28. /* hook is triggered? */
  29. if (hook_flags != 1234) {
  30. pr_debug("Setting failed: %d (%p)\n", hook_flags, &hook_flags);
  31. return TEST_FAIL;
  32. }
  33. /* the buggy hook is removed? */
  34. if (perf_hooks__get_hook("test"))
  35. return TEST_FAIL;
  36. return TEST_OK;
  37. }