1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Kernel-based Virtual Machine driver for Linux
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright 2016 Red Hat, Inc. and/or its affiliates.
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun #include <linux/kvm_host.h>
8*4882a593Smuzhiyun #include <linux/debugfs.h>
9*4882a593Smuzhiyun #include "lapic.h"
10*4882a593Smuzhiyun
vcpu_get_timer_advance_ns(void * data,u64 * val)11*4882a593Smuzhiyun static int vcpu_get_timer_advance_ns(void *data, u64 *val)
12*4882a593Smuzhiyun {
13*4882a593Smuzhiyun struct kvm_vcpu *vcpu = (struct kvm_vcpu *) data;
14*4882a593Smuzhiyun *val = vcpu->arch.apic->lapic_timer.timer_advance_ns;
15*4882a593Smuzhiyun return 0;
16*4882a593Smuzhiyun }
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun DEFINE_SIMPLE_ATTRIBUTE(vcpu_timer_advance_ns_fops, vcpu_get_timer_advance_ns, NULL, "%llu\n");
19*4882a593Smuzhiyun
vcpu_get_tsc_offset(void * data,u64 * val)20*4882a593Smuzhiyun static int vcpu_get_tsc_offset(void *data, u64 *val)
21*4882a593Smuzhiyun {
22*4882a593Smuzhiyun struct kvm_vcpu *vcpu = (struct kvm_vcpu *) data;
23*4882a593Smuzhiyun *val = vcpu->arch.tsc_offset;
24*4882a593Smuzhiyun return 0;
25*4882a593Smuzhiyun }
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun DEFINE_SIMPLE_ATTRIBUTE(vcpu_tsc_offset_fops, vcpu_get_tsc_offset, NULL, "%lld\n");
28*4882a593Smuzhiyun
vcpu_get_tsc_scaling_ratio(void * data,u64 * val)29*4882a593Smuzhiyun static int vcpu_get_tsc_scaling_ratio(void *data, u64 *val)
30*4882a593Smuzhiyun {
31*4882a593Smuzhiyun struct kvm_vcpu *vcpu = (struct kvm_vcpu *) data;
32*4882a593Smuzhiyun *val = vcpu->arch.tsc_scaling_ratio;
33*4882a593Smuzhiyun return 0;
34*4882a593Smuzhiyun }
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun DEFINE_SIMPLE_ATTRIBUTE(vcpu_tsc_scaling_fops, vcpu_get_tsc_scaling_ratio, NULL, "%llu\n");
37*4882a593Smuzhiyun
vcpu_get_tsc_scaling_frac_bits(void * data,u64 * val)38*4882a593Smuzhiyun static int vcpu_get_tsc_scaling_frac_bits(void *data, u64 *val)
39*4882a593Smuzhiyun {
40*4882a593Smuzhiyun *val = kvm_tsc_scaling_ratio_frac_bits;
41*4882a593Smuzhiyun return 0;
42*4882a593Smuzhiyun }
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun DEFINE_SIMPLE_ATTRIBUTE(vcpu_tsc_scaling_frac_fops, vcpu_get_tsc_scaling_frac_bits, NULL, "%llu\n");
45*4882a593Smuzhiyun
kvm_arch_create_vcpu_debugfs(struct kvm_vcpu * vcpu,struct dentry * debugfs_dentry)46*4882a593Smuzhiyun void kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu, struct dentry *debugfs_dentry)
47*4882a593Smuzhiyun {
48*4882a593Smuzhiyun debugfs_create_file("tsc-offset", 0444, debugfs_dentry, vcpu,
49*4882a593Smuzhiyun &vcpu_tsc_offset_fops);
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun if (lapic_in_kernel(vcpu))
52*4882a593Smuzhiyun debugfs_create_file("lapic_timer_advance_ns", 0444,
53*4882a593Smuzhiyun debugfs_dentry, vcpu,
54*4882a593Smuzhiyun &vcpu_timer_advance_ns_fops);
55*4882a593Smuzhiyun
56*4882a593Smuzhiyun if (kvm_has_tsc_control) {
57*4882a593Smuzhiyun debugfs_create_file("tsc-scaling-ratio", 0444,
58*4882a593Smuzhiyun debugfs_dentry, vcpu,
59*4882a593Smuzhiyun &vcpu_tsc_scaling_fops);
60*4882a593Smuzhiyun debugfs_create_file("tsc-scaling-ratio-frac-bits", 0444,
61*4882a593Smuzhiyun debugfs_dentry, vcpu,
62*4882a593Smuzhiyun &vcpu_tsc_scaling_frac_fops);
63*4882a593Smuzhiyun }
64*4882a593Smuzhiyun }
65