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20c8ccb197
Based on 1 normalized pattern(s): this work is licensed under the terms of the gnu gpl version 2 see the copying file in the top level directory extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 35 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.797835076@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
84 lines
2 KiB
C
84 lines
2 KiB
C
// 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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bool kvm_arch_has_vcpu_debugfs(void)
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{
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return true;
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}
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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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int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu)
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{
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struct dentry *ret;
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ret = debugfs_create_file("tsc-offset", 0444,
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vcpu->debugfs_dentry,
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vcpu, &vcpu_tsc_offset_fops);
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if (!ret)
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return -ENOMEM;
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if (lapic_in_kernel(vcpu)) {
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ret = debugfs_create_file("lapic_timer_advance_ns", 0444,
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vcpu->debugfs_dentry,
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vcpu, &vcpu_timer_advance_ns_fops);
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if (!ret)
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return -ENOMEM;
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}
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if (kvm_has_tsc_control) {
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ret = debugfs_create_file("tsc-scaling-ratio", 0444,
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vcpu->debugfs_dentry,
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vcpu, &vcpu_tsc_scaling_fops);
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if (!ret)
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return -ENOMEM;
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ret = debugfs_create_file("tsc-scaling-ratio-frac-bits", 0444,
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vcpu->debugfs_dentry,
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vcpu, &vcpu_tsc_scaling_frac_fops);
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if (!ret)
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return -ENOMEM;
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}
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return 0;
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}
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