tools/testing/selftests/membarrier/membarrier_test_impl.h

File Facts

System

Linux kernel

Corpus path

tools/testing/selftests/membarrier/membarrier_test_impl.h

Extension

.h

Size

9013 bytes

Lines

351

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.

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

Dependency Surface

• linux/membarrier.h
• syscall.h
• stdio.h
• errno.h
• string.h
• pthread.h
• kselftest.h

Detected Declarations

• function sys_membarrier
• function test_membarrier_get_registrations
• function test_membarrier_cmd_fail
• function test_membarrier_flags_fail
• function test_membarrier_global_success
• function test_membarrier_private_expedited_fail
• function test_membarrier_register_private_expedited_success
• function test_membarrier_private_expedited_success
• function test_membarrier_private_expedited_sync_core_fail
• function test_membarrier_register_private_expedited_sync_core_success
• function test_membarrier_private_expedited_sync_core_success
• function test_membarrier_register_global_expedited_success
• function test_membarrier_global_expedited_success
• function test_membarrier_fail
• function test_membarrier_success
• function test_membarrier_query

Annotated Snippet

if (errno == ENOSYS) {
			/*
			 * It is valid to build a kernel with
			 * CONFIG_MEMBARRIER=n. However, this skips the tests.
			 */
			ksft_exit_skip(
				"sys membarrier (CONFIG_MEMBARRIER) is disabled.\n");
		}
		ksft_exit_fail_msg("sys_membarrier() failed\n");
	}
	if (!(ret & MEMBARRIER_CMD_GLOBAL))
		ksft_exit_skip(
			"sys_membarrier unsupported: CMD_GLOBAL not found.\n");

	ksft_test_result_pass("sys_membarrier available\n");
	return 0;
}

Annotation

• Immediate include surface: `linux/membarrier.h`, `syscall.h`, `stdio.h`, `errno.h`, `string.h`, `pthread.h`, `kselftest.h`.
• Detected declarations: `function sys_membarrier`, `function test_membarrier_get_registrations`, `function test_membarrier_cmd_fail`, `function test_membarrier_flags_fail`, `function test_membarrier_global_success`, `function test_membarrier_private_expedited_fail`, `function test_membarrier_register_private_expedited_success`, `function test_membarrier_private_expedited_success`, `function test_membarrier_private_expedited_sync_core_fail`, `function test_membarrier_register_private_expedited_sync_core_success`.
• Atlas domain: Support Tooling And Documentation / tools.
• Implementation status: source implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.