tools/perf/tests/sigtrap.c

Source file repositories/reference/linux-study-clean/tools/perf/tests/sigtrap.c

File Facts

System
Linux kernel
Corpus path
tools/perf/tests/sigtrap.c
Extension
.c
Size
7131 bytes
Lines
276
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

if (attr_has_sigtrap()) {
			pr_debug("FAILED sys_perf_event_open(): %s\n",
				 str_error_r(errno, sbuf, sizeof(sbuf)));
		} else {
			pr_debug("perf_event_attr doesn't have sigtrap\n");
			ret = TEST_SKIP;
		}
		goto out_restore_sigaction;
	}

	for (i = 0; i < NUM_THREADS; i++) {
		if (pthread_create(&threads[i], NULL, test_thread, &barrier)) {
			pr_debug("FAILED pthread_create(): %s\n", str_error_r(errno, sbuf, sizeof(sbuf)));
			goto out_close_perf_event;
		}
	}

	ret = run_stress_test(fd, threads, &barrier);

out_close_perf_event:
	close(fd);
out_restore_sigaction:
	sigaction(SIGTRAP, &oldact, NULL);
out:
	pthread_barrier_destroy(&barrier);
	btf__exit();
	return ret;
}

DEFINE_SUITE("Sigtrap", sigtrap);

Annotation

Implementation Notes