tools/testing/vma/tests/mmap.c

File Facts

System

Linux kernel

Corpus path

tools/testing/vma/tests/mmap.c

Extension

.c

Size

1380 bytes

Lines

52

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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• function test_mmap_region_basic
• function for_each_vma
• function run_mmap_tests

Annotated Snippet

if (vma->vm_start == 0x300000) {
			ASSERT_EQ(vma->vm_end, 0x306000);
			ASSERT_EQ(vma->vm_pgoff, 0x300);
		} else if (vma->vm_start == 0x24d000) {
			ASSERT_EQ(vma->vm_end, 0x253000);
			ASSERT_EQ(vma->vm_pgoff, 0x24d);
		} else {
			ASSERT_FALSE(true);
		}
	}

	cleanup_mm(&mm, &vmi);
	return true;
}

static void run_mmap_tests(int *num_tests, int *num_fail)
{
	TEST(mmap_region_basic);
}

Annotation

• Detected declarations: `function test_mmap_region_basic`, `function for_each_vma`, `function run_mmap_tests`.
• 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.