[people/ms/linux.git] / tools / testing / selftests / kvm / include / perf_test_util.h

// SPDX-License-Identifier: GPL-2.0
/*
 * tools/testing/selftests/kvm/include/perf_test_util.h
 *
 * Copyright (C) 2020, Google LLC.
 */

#ifndef SELFTEST_KVM_PERF_TEST_UTIL_H
#define SELFTEST_KVM_PERF_TEST_UTIL_H

#include <pthread.h>

#include "kvm_util.h"

/* Default guest test virtual memory offset */
#define DEFAULT_GUEST_TEST_MEM		0xc0000000

#define DEFAULT_PER_VCPU_MEM_SIZE	(1 << 30) /* 1G */

#define PERF_TEST_MEM_SLOT_INDEX	1

struct perf_test_vcpu_args {
	uint64_t gpa;
	uint64_t gva;
	uint64_t pages;

	/* Only used by the host userspace part of the vCPU thread */
	int vcpu_id;
};

struct perf_test_args {
	struct kvm_vm *vm;
	/* The starting address and size of the guest test region. */
	uint64_t gpa;
	uint64_t size;
	uint64_t guest_page_size;
	int wr_fract;

	/* Run vCPUs in L2 instead of L1, if the architecture supports it. */
	bool nested;

	struct perf_test_vcpu_args vcpu_args[KVM_MAX_VCPUS];
};

extern struct perf_test_args perf_test_args;

struct kvm_vm *perf_test_create_vm(enum vm_guest_mode mode, int vcpus,
				   uint64_t vcpu_memory_bytes, int slots,
				   enum vm_mem_backing_src_type backing_src,
				   bool partition_vcpu_memory_access);
void perf_test_destroy_vm(struct kvm_vm *vm);

void perf_test_set_wr_fract(struct kvm_vm *vm, int wr_fract);

void perf_test_start_vcpu_threads(int vcpus, void (*vcpu_fn)(struct perf_test_vcpu_args *));
void perf_test_join_vcpu_threads(int vcpus);
void perf_test_guest_code(uint32_t vcpu_id);

uint64_t perf_test_nested_pages(int nr_vcpus);
void perf_test_setup_nested(struct kvm_vm *vm, int nr_vcpus);

#endif /* SELFTEST_KVM_PERF_TEST_UTIL_H */
Commit	Line	Data
4b5d12b0 BG	1	// SPDX-License-Identifier: GPL-2.0
	2	/*
	3	* tools/testing/selftests/kvm/include/perf_test_util.h
	4	*
	5	* Copyright (C) 2020, Google LLC.
	6	*/
	7
	8	#ifndef SELFTEST_KVM_PERF_TEST_UTIL_H
	9	#define SELFTEST_KVM_PERF_TEST_UTIL_H
	10
81bcb261 DM	11	#include <pthread.h>
81bcb261 DM	12
4b5d12b0	13	#include "kvm_util.h"
4b5d12b0 BG	14
	15	/* Default guest test virtual memory offset */
	16	#define DEFAULT_GUEST_TEST_MEM 0xc0000000
	17
6769155f AJ	18	#define DEFAULT_PER_VCPU_MEM_SIZE (1 << 30) /* 1G */
6769155f AJ	19
b268b6f0	20	#define PERF_TEST_MEM_SLOT_INDEX 1
3be18630	21
b268b6f0	22	struct perf_test_vcpu_args {
613d6118	23	uint64_t gpa;
4b5d12b0 BG	24	uint64_t gva;
	25	uint64_t pages;
	26
	27	/* Only used by the host userspace part of the vCPU thread */
	28	int vcpu_id;
	29	};
	30
	31	struct perf_test_args {
	32	struct kvm_vm *vm;
71d48966	33	/* The starting address and size of the guest test region. */
b91b637f	34	uint64_t gpa;
71d48966	35	uint64_t size;
4b5d12b0	36	uint64_t guest_page_size;
92ab4b9a	37	int wr_fract;
4b5d12b0	38
71d48966 DM	39	/* Run vCPUs in L2 instead of L1, if the architecture supports it. */
	40	bool nested;
	41
b268b6f0	42	struct perf_test_vcpu_args vcpu_args[KVM_MAX_VCPUS];
4b5d12b0 BG	43	};
4b5d12b0 BG	44
b268b6f0	45	extern struct perf_test_args perf_test_args;
4b5d12b0	46
b268b6f0	47	struct kvm_vm *perf_test_create_vm(enum vm_guest_mode mode, int vcpus,
609e6202	48	uint64_t vcpu_memory_bytes, int slots,
cf1d5930 SC	49	enum vm_mem_backing_src_type backing_src,
cf1d5930 SC	50	bool partition_vcpu_memory_access);
b268b6f0	51	void perf_test_destroy_vm(struct kvm_vm *vm);
4b5d12b0	52
13bbc703 SC	53	void perf_test_set_wr_fract(struct kvm_vm *vm, int wr_fract);
13bbc703 SC	54
81bcb261 DM	55	void perf_test_start_vcpu_threads(int vcpus, void (vcpu_fn)(struct perf_test_vcpu_args ));
81bcb261 DM	56	void perf_test_join_vcpu_threads(int vcpus);
71d48966 DM	57	void perf_test_guest_code(uint32_t vcpu_id);
	58
	59	uint64_t perf_test_nested_pages(int nr_vcpus);
	60	void perf_test_setup_nested(struct kvm_vm *vm, int nr_vcpus);
81bcb261	61
4b5d12b0	62	#endif /* SELFTEST_KVM_PERF_TEST_UTIL_H */