projects / mirror_ubuntu-eoan-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 20c8ccb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
| 235539b4 LC |
2 | /* |
| 3 | * Kernel-based Virtual Machine driver for Linux | |
| 4 | * | |
| 5 | * Copyright 2016 Red Hat, Inc. and/or its affiliates. | |
| 235539b4 LC |
6 | */ |
| 7 | #include <linux/kvm_host.h> | |
| 4f5758fc | 8 | #include <linux/debugfs.h> |
| 16ba3ab4 | 9 | #include "lapic.h" |
| 235539b4 LC |
10 | |
| 11 | bool kvm_arch_has_vcpu_debugfs(void) | |
| 12 | { | |
| 4f5758fc | 13 | return true; |
| 235539b4 LC |
14 | } |
| 15 | ||
| 16ba3ab4 WL |
16 | static int vcpu_get_timer_advance_ns(void *data, u64 *val) |
| 17 | { | |
| 18 | struct kvm_vcpu *vcpu = (struct kvm_vcpu *) data; | |
| 19 | *val = vcpu->arch.apic->lapic_timer.timer_advance_ns; | |
| 20 | return 0; | |
| 21 | } | |
| 22 | ||
| 23 | DEFINE_SIMPLE_ATTRIBUTE(vcpu_timer_advance_ns_fops, vcpu_get_timer_advance_ns, NULL, "%llu\n"); | |
| 24 | ||
| 4f5758fc LC |
25 | static int vcpu_get_tsc_offset(void *data, u64 *val) |
| 26 | { | |
| 27 | struct kvm_vcpu *vcpu = (struct kvm_vcpu *) data; | |
| 28 | *val = vcpu->arch.tsc_offset; | |
| 29 | return 0; | |
| 30 | } | |
| 31 | ||
| 32 | DEFINE_SIMPLE_ATTRIBUTE(vcpu_tsc_offset_fops, vcpu_get_tsc_offset, NULL, "%lld\n"); | |
| 33 | ||
| 34 | static int vcpu_get_tsc_scaling_ratio(void *data, u64 *val) | |
| 35 | { | |
| 36 | struct kvm_vcpu *vcpu = (struct kvm_vcpu *) data; | |
| 37 | *val = vcpu->arch.tsc_scaling_ratio; | |
| 38 | return 0; | |
| 39 | } | |
| 40 | ||
| 41 | DEFINE_SIMPLE_ATTRIBUTE(vcpu_tsc_scaling_fops, vcpu_get_tsc_scaling_ratio, NULL, "%llu\n"); | |
| 42 | ||
| 43 | static int vcpu_get_tsc_scaling_frac_bits(void *data, u64 *val) | |
| 44 | { | |
| 45 | *val = kvm_tsc_scaling_ratio_frac_bits; | |
| 46 | return 0; | |
| 47 | } | |
| 48 | ||
| 49 | DEFINE_SIMPLE_ATTRIBUTE(vcpu_tsc_scaling_frac_fops, vcpu_get_tsc_scaling_frac_bits, NULL, "%llu\n"); | |
| 50 | ||
| 235539b4 LC |
51 | int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu) |
| 52 | { | |
| 4f5758fc LC |
53 | struct dentry *ret; |
| 54 | ||
| 55 | ret = debugfs_create_file("tsc-offset", 0444, | |
| 56 | vcpu->debugfs_dentry, | |
| 57 | vcpu, &vcpu_tsc_offset_fops); | |
| 58 | if (!ret) | |
| 59 | return -ENOMEM; | |
| 60 | ||
| 16ba3ab4 WL |
61 | if (lapic_in_kernel(vcpu)) { |
| 62 | ret = debugfs_create_file("lapic_timer_advance_ns", 0444, | |
| 63 | vcpu->debugfs_dentry, | |
| 64 | vcpu, &vcpu_timer_advance_ns_fops); | |
| 65 | if (!ret) | |
| 66 | return -ENOMEM; | |
| 67 | } | |
| 68 | ||
| 4f5758fc LC |
69 | if (kvm_has_tsc_control) { |
| 70 | ret = debugfs_create_file("tsc-scaling-ratio", 0444, | |
| 71 | vcpu->debugfs_dentry, | |
| 72 | vcpu, &vcpu_tsc_scaling_fops); | |
| 73 | if (!ret) | |
| 74 | return -ENOMEM; | |
| 75 | ret = debugfs_create_file("tsc-scaling-ratio-frac-bits", 0444, | |
| 76 | vcpu->debugfs_dentry, | |
| 77 | vcpu, &vcpu_tsc_scaling_frac_fops); | |
| 78 | if (!ret) | |
| 79 | return -ENOMEM; | |
| 80 | ||
| 81 | } | |
| 82 | ||
| 235539b4 LC |
83 | return 0; |
| 84 | } |