LXR linux/tools/testing/selftests/kvm/include/perf_test

   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
  11#include "kvm_util.h"
  12
  13/* Default guest test virtual memory offset */
  14#define DEFAULT_GUEST_TEST_MEM          0xc0000000
  15
  16#define DEFAULT_PER_VCPU_MEM_SIZE       (1 << 30) /* 1G */
  17
  18#define PERF_TEST_MEM_SLOT_INDEX        1
  19
  20struct perf_test_vcpu_args {
  21        uint64_t gva;
  22        uint64_t pages;
  23
  24        /* Only used by the host userspace part of the vCPU thread */
  25        int vcpu_id;
  26};
  27
  28struct perf_test_args {
  29        struct kvm_vm *vm;
  30        uint64_t host_page_size;
  31        uint64_t guest_page_size;
  32        int wr_fract;
  33
  34        struct perf_test_vcpu_args vcpu_args[KVM_MAX_VCPUS];
  35};
  36
  37extern struct perf_test_args perf_test_args;
  38
  39/*
  40 * Guest physical memory offset of the testing memory slot.
  41 * This will be set to the topmost valid physical address minus
  42 * the test memory size.
  43 */
  44extern uint64_t guest_test_phys_mem;
  45
  46struct kvm_vm *perf_test_create_vm(enum vm_guest_mode mode, int vcpus,
  47                                   uint64_t vcpu_memory_bytes, int slots,
  48                                   enum vm_mem_backing_src_type backing_src);
  49void perf_test_destroy_vm(struct kvm_vm *vm);
  50void perf_test_setup_vcpus(struct kvm_vm *vm, int vcpus,
  51                           uint64_t vcpu_memory_bytes,
  52                           bool partition_vcpu_memory_access);
  53
  54#endif /* SELFTEST_KVM_PERF_TEST_UTIL_H */
  55