mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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36d09b96d3
This patch adds tracepoints to track KVM exits caused by CPUCFG and CSR emulation. Note that IOCSR emulation tracing is already covered by the generic trace_kvm_iocsr(). Reviewed-by: Bibo Mao <maobibo@loongson.cn> Signed-off-by: Yulong Han <wheatfox17@icloud.com> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
186 lines
4.5 KiB
C
186 lines
4.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2020-2023 Loongson Technology Corporation Limited
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*/
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#if !defined(_TRACE_KVM_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_KVM_H
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#include <linux/tracepoint.h>
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#include <asm/kvm_csr.h>
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM kvm
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/*
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* Tracepoints for VM enters
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*/
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DECLARE_EVENT_CLASS(kvm_transition,
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TP_PROTO(struct kvm_vcpu *vcpu),
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TP_ARGS(vcpu),
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TP_STRUCT__entry(
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__field(unsigned int, vcpu_id)
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__field(unsigned long, pc)
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),
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TP_fast_assign(
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__entry->vcpu_id = vcpu->vcpu_id;
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__entry->pc = vcpu->arch.pc;
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),
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TP_printk("vcpu %u PC: 0x%08lx", __entry->vcpu_id, __entry->pc)
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);
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DEFINE_EVENT(kvm_transition, kvm_enter,
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TP_PROTO(struct kvm_vcpu *vcpu),
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TP_ARGS(vcpu));
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DEFINE_EVENT(kvm_transition, kvm_reenter,
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TP_PROTO(struct kvm_vcpu *vcpu),
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TP_ARGS(vcpu));
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DEFINE_EVENT(kvm_transition, kvm_out,
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TP_PROTO(struct kvm_vcpu *vcpu),
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TP_ARGS(vcpu));
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/* Further exit reasons */
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#define KVM_TRACE_EXIT_IDLE 64
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#define KVM_TRACE_EXIT_CACHE 65
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#define KVM_TRACE_EXIT_CPUCFG 66
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#define KVM_TRACE_EXIT_CSR 67
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/* Tracepoints for VM exits */
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#define kvm_trace_symbol_exit_types \
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{ KVM_TRACE_EXIT_IDLE, "IDLE" }, \
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{ KVM_TRACE_EXIT_CACHE, "CACHE" }, \
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{ KVM_TRACE_EXIT_CPUCFG, "CPUCFG" }, \
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{ KVM_TRACE_EXIT_CSR, "CSR" }
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DECLARE_EVENT_CLASS(kvm_exit,
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TP_PROTO(struct kvm_vcpu *vcpu, unsigned int reason),
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TP_ARGS(vcpu, reason),
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TP_STRUCT__entry(
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__field(unsigned int, vcpu_id)
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__field(unsigned long, pc)
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__field(unsigned int, reason)
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),
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TP_fast_assign(
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__entry->vcpu_id = vcpu->vcpu_id;
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__entry->pc = vcpu->arch.pc;
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__entry->reason = reason;
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),
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TP_printk("vcpu %u [%s] PC: 0x%08lx",
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__entry->vcpu_id,
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__print_symbolic(__entry->reason,
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kvm_trace_symbol_exit_types),
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__entry->pc)
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);
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DEFINE_EVENT(kvm_exit, kvm_exit_idle,
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TP_PROTO(struct kvm_vcpu *vcpu, unsigned int reason),
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TP_ARGS(vcpu, reason));
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DEFINE_EVENT(kvm_exit, kvm_exit_cache,
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TP_PROTO(struct kvm_vcpu *vcpu, unsigned int reason),
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TP_ARGS(vcpu, reason));
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DEFINE_EVENT(kvm_exit, kvm_exit_cpucfg,
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TP_PROTO(struct kvm_vcpu *vcpu, unsigned int reason),
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TP_ARGS(vcpu, reason));
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DEFINE_EVENT(kvm_exit, kvm_exit_csr,
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TP_PROTO(struct kvm_vcpu *vcpu, unsigned int reason),
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TP_ARGS(vcpu, reason));
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DEFINE_EVENT(kvm_exit, kvm_exit,
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TP_PROTO(struct kvm_vcpu *vcpu, unsigned int reason),
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TP_ARGS(vcpu, reason));
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TRACE_EVENT(kvm_exit_gspr,
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TP_PROTO(struct kvm_vcpu *vcpu, unsigned int inst_word),
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TP_ARGS(vcpu, inst_word),
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TP_STRUCT__entry(
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__field(unsigned int, vcpu_id)
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__field(unsigned int, inst_word)
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),
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TP_fast_assign(
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__entry->vcpu_id = vcpu->vcpu_id;
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__entry->inst_word = inst_word;
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),
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TP_printk("vcpu %u Inst word: 0x%08x", __entry->vcpu_id,
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__entry->inst_word)
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);
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#define KVM_TRACE_AUX_SAVE 0
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#define KVM_TRACE_AUX_RESTORE 1
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#define KVM_TRACE_AUX_ENABLE 2
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#define KVM_TRACE_AUX_DISABLE 3
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#define KVM_TRACE_AUX_DISCARD 4
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#define KVM_TRACE_AUX_FPU 1
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#define KVM_TRACE_AUX_LSX 2
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#define KVM_TRACE_AUX_LASX 3
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#define kvm_trace_symbol_aux_op \
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{ KVM_TRACE_AUX_SAVE, "save" }, \
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{ KVM_TRACE_AUX_RESTORE, "restore" }, \
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{ KVM_TRACE_AUX_ENABLE, "enable" }, \
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{ KVM_TRACE_AUX_DISABLE, "disable" }, \
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{ KVM_TRACE_AUX_DISCARD, "discard" }
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#define kvm_trace_symbol_aux_state \
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{ KVM_TRACE_AUX_FPU, "FPU" }, \
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{ KVM_TRACE_AUX_LSX, "LSX" }, \
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{ KVM_TRACE_AUX_LASX, "LASX" }
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TRACE_EVENT(kvm_aux,
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TP_PROTO(struct kvm_vcpu *vcpu, unsigned int op,
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unsigned int state),
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TP_ARGS(vcpu, op, state),
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TP_STRUCT__entry(
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__field(unsigned long, pc)
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__field(u8, op)
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__field(u8, state)
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),
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TP_fast_assign(
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__entry->pc = vcpu->arch.pc;
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__entry->op = op;
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__entry->state = state;
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),
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TP_printk("%s %s PC: 0x%08lx",
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__print_symbolic(__entry->op,
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kvm_trace_symbol_aux_op),
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__print_symbolic(__entry->state,
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kvm_trace_symbol_aux_state),
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__entry->pc)
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);
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TRACE_EVENT(kvm_vpid_change,
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TP_PROTO(struct kvm_vcpu *vcpu, unsigned long vpid),
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TP_ARGS(vcpu, vpid),
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TP_STRUCT__entry(
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__field(unsigned long, vpid)
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),
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TP_fast_assign(
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__entry->vpid = vpid;
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),
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TP_printk("VPID: 0x%08lx", __entry->vpid)
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);
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#endif /* _TRACE_KVM_H */
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#undef TRACE_INCLUDE_PATH
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#define TRACE_INCLUDE_PATH ../../arch/loongarch/kvm
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#undef TRACE_INCLUDE_FILE
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#define TRACE_INCLUDE_FILE trace
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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