tools/testing/selftests/vDSO/vdso_config.h

Source file repositories/reference/linux-study-clean/tools/testing/selftests/vDSO/vdso_config.h

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/vDSO/vdso_config.h
Extension
.h
Size
2017 bytes
Lines
93
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

#ifndef __VDSO_CONFIG_H__
#define __VDSO_CONFIG_H__

/*
 * Each architecture exports its vDSO implementation with different names
 * and a different version from the others, so we need to handle it as a
 * special case.
 */
#if defined(__arm__)
#define VDSO_VERSION		0
#define VDSO_NAMES		1
#define VDSO_32BIT		1
#elif defined(__aarch64__)
#define VDSO_VERSION		3
#define VDSO_NAMES		0
#elif defined(__powerpc64__)
#define VDSO_VERSION		1
#define VDSO_NAMES		0
#elif defined(__powerpc__)
#define VDSO_VERSION		1
#define VDSO_NAMES		0
#define VDSO_32BIT		1
#elif defined (__s390x__)
#define VDSO_VERSION		2
#define VDSO_NAMES		0
#elif defined(__mips__)
#define VDSO_VERSION		0
#define VDSO_NAMES		1
#define VDSO_32BIT		1
#elif defined(__sparc__)
#define VDSO_VERSION		0
#define VDSO_NAMES		1
#define VDSO_32BIT		1
#elif defined(__i386__)
#define VDSO_VERSION		0
#define VDSO_NAMES		1
#define VDSO_32BIT		1
#elif defined(__x86_64__)
#define VDSO_VERSION		0
#define VDSO_NAMES		1
#elif defined(__riscv__) || defined(__riscv)
#define VDSO_VERSION		5
#define VDSO_NAMES		1
#if __riscv_xlen == 32
#define VDSO_32BIT		1
#endif
#elif defined(__loongarch__)
#define VDSO_VERSION		6
#define VDSO_NAMES		1
#endif

__attribute__((unused))
static const char *versions[7] = {
	"LINUX_2.6",
	"LINUX_2.6.15",
	"LINUX_2.6.29",
	"LINUX_2.6.39",
	"LINUX_4",
	"LINUX_4.15",
	"LINUX_5.10"
};

__attribute__((unused))
static const char *names[2][8] = {
	{
		"__kernel_gettimeofday",
		"__kernel_clock_gettime",
		"__kernel_time",
		"__kernel_clock_getres",
		"__kernel_getcpu",
		"__kernel_clock_gettime64",
		"__kernel_getrandom",
		"__kernel_clock_getres_time64",
	},
	{
		"__vdso_gettimeofday",
		"__vdso_clock_gettime",
		"__vdso_time",
		"__vdso_clock_getres",
		"__vdso_getcpu",
		"__vdso_clock_gettime64",
		"__vdso_getrandom",
		"__vdso_clock_getres_time64",
	},
};

#endif /* __VDSO_CONFIG_H__ */

Annotation

Implementation Notes