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