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- // SPDX-License-Identifier: GPL-2.0-only
- /*
- * Kernel-based Virtual Machine driver for Linux
- *
- * Copyright 2016 Red Hat, Inc. and/or its affiliates.
- */
- #include <linux/kvm_host.h>
- #include <linux/debugfs.h>
- #include "lapic.h"
- static int vcpu_get_timer_advance_ns(void *data, u64 *val)
- {
- struct kvm_vcpu *vcpu = (struct kvm_vcpu *) data;
- *val = vcpu->arch.apic->lapic_timer.timer_advance_ns;
- return 0;
- }
- DEFINE_SIMPLE_ATTRIBUTE(vcpu_timer_advance_ns_fops, vcpu_get_timer_advance_ns, NULL, "%llu\n");
- static int vcpu_get_tsc_offset(void *data, u64 *val)
- {
- struct kvm_vcpu *vcpu = (struct kvm_vcpu *) data;
- *val = vcpu->arch.tsc_offset;
- return 0;
- }
- DEFINE_SIMPLE_ATTRIBUTE(vcpu_tsc_offset_fops, vcpu_get_tsc_offset, NULL, "%lld\n");
- static int vcpu_get_tsc_scaling_ratio(void *data, u64 *val)
- {
- struct kvm_vcpu *vcpu = (struct kvm_vcpu *) data;
- *val = vcpu->arch.tsc_scaling_ratio;
- return 0;
- }
- DEFINE_SIMPLE_ATTRIBUTE(vcpu_tsc_scaling_fops, vcpu_get_tsc_scaling_ratio, NULL, "%llu\n");
- static int vcpu_get_tsc_scaling_frac_bits(void *data, u64 *val)
- {
- *val = kvm_tsc_scaling_ratio_frac_bits;
- return 0;
- }
- DEFINE_SIMPLE_ATTRIBUTE(vcpu_tsc_scaling_frac_fops, vcpu_get_tsc_scaling_frac_bits, NULL, "%llu\n");
- void kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu, struct dentry *debugfs_dentry)
- {
- debugfs_create_file("tsc-offset", 0444, debugfs_dentry, vcpu,
- &vcpu_tsc_offset_fops);
- if (lapic_in_kernel(vcpu))
- debugfs_create_file("lapic_timer_advance_ns", 0444,
- debugfs_dentry, vcpu,
- &vcpu_timer_advance_ns_fops);
- if (kvm_has_tsc_control) {
- debugfs_create_file("tsc-scaling-ratio", 0444,
- debugfs_dentry, vcpu,
- &vcpu_tsc_scaling_fops);
- debugfs_create_file("tsc-scaling-ratio-frac-bits", 0444,
- debugfs_dentry, vcpu,
- &vcpu_tsc_scaling_frac_fops);
- }
- }
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