tools/testing/selftests/mm/gup_longterm.c

Source file repositories/reference/linux-study-clean/tools/testing/selftests/mm/gup_longterm.c

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/mm/gup_longterm.c
Extension
.c
Size
11717 bytes
Lines
525
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

struct test_case {
	const char *desc;
	test_fn fn;
};

static void test_shared_rw_pin(int fd, size_t size)
{
	do_test(fd, size, TEST_TYPE_RW, true);
}

static void test_shared_rw_fast_pin(int fd, size_t size)
{
	do_test(fd, size, TEST_TYPE_RW_FAST, true);
}

static void test_shared_ro_pin(int fd, size_t size)
{
	do_test(fd, size, TEST_TYPE_RO, true);
}

static void test_shared_ro_fast_pin(int fd, size_t size)
{
	do_test(fd, size, TEST_TYPE_RO_FAST, true);
}

static void test_private_rw_pin(int fd, size_t size)
{
	do_test(fd, size, TEST_TYPE_RW, false);
}

static void test_private_rw_fast_pin(int fd, size_t size)
{
	do_test(fd, size, TEST_TYPE_RW_FAST, false);
}

static void test_private_ro_pin(int fd, size_t size)
{
	do_test(fd, size, TEST_TYPE_RO, false);
}

static void test_private_ro_fast_pin(int fd, size_t size)
{
	do_test(fd, size, TEST_TYPE_RO_FAST, false);
}

#ifdef LOCAL_CONFIG_HAVE_LIBURING
static void test_shared_iouring(int fd, size_t size)
{
	do_test(fd, size, TEST_TYPE_IOURING, true);
}

static void test_private_iouring(int fd, size_t size)
{
	do_test(fd, size, TEST_TYPE_IOURING, false);
}
#endif /* LOCAL_CONFIG_HAVE_LIBURING */

static const struct test_case test_cases[] = {
	{
		"R/W longterm GUP pin in MAP_SHARED file mapping",
		test_shared_rw_pin,
	},
	{
		"R/W longterm GUP-fast pin in MAP_SHARED file mapping",
		test_shared_rw_fast_pin,
	},
	{
		"R/O longterm GUP pin in MAP_SHARED file mapping",
		test_shared_ro_pin,
	},
	{
		"R/O longterm GUP-fast pin in MAP_SHARED file mapping",
		test_shared_ro_fast_pin,
	},
	{
		"R/W longterm GUP pin in MAP_PRIVATE file mapping",
		test_private_rw_pin,
	},
	{
		"R/W longterm GUP-fast pin in MAP_PRIVATE file mapping",
		test_private_rw_fast_pin,
	},
	{
		"R/O longterm GUP pin in MAP_PRIVATE file mapping",
		test_private_ro_pin,
	},
	{
		"R/O longterm GUP-fast pin in MAP_PRIVATE file mapping",
		test_private_ro_fast_pin,
	},

Annotation

Implementation Notes