1. 根目录:
2. arch
3. arm
4. kvm
5. trace.h

#if !defined(_TRACE_KVM_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_KVM_H

#include <linux/tracepoint.h>

#undef TRACE_SYSTEM
#define TRACE_SYSTEM kvm

/*
 * Tracepoints for entry/exit to guest
 */
TRACE_EVENT(kvm_entry,
	TP_PROTO(unsigned long vcpu_pc),
	TP_ARGS(vcpu_pc),

	TP_STRUCT__entry(
		__field(	unsigned long,	vcpu_pc		)
	),

	TP_fast_assign(
		__entry->vcpu_pc		= vcpu_pc;
	),

	TP_printk("PC: 0x%08lx", __entry->vcpu_pc)
);

TRACE_EVENT(kvm_exit,
	TP_PROTO(unsigned long vcpu_pc),
	TP_ARGS(vcpu_pc),

	TP_STRUCT__entry(
		__field(	unsigned long,	vcpu_pc		)
	),

	TP_fast_assign(
		__entry->vcpu_pc		= vcpu_pc;
	),

	TP_printk("PC: 0x%08lx", __entry->vcpu_pc)
);

TRACE_EVENT(kvm_guest_fault,
	TP_PROTO(unsigned long vcpu_pc, unsigned long hsr,
		 unsigned long hxfar,
		 unsigned long long ipa),
	TP_ARGS(vcpu_pc, hsr, hxfar, ipa),

	TP_STRUCT__entry(
		__field(	unsigned long,	vcpu_pc		)
		__field(	unsigned long,	hsr		)
		__field(	unsigned long,	hxfar		)
		__field(   unsigned long long,	ipa		)
	),

	TP_fast_assign(
		__entry->vcpu_pc		= vcpu_pc;
		__entry->hsr			= hsr;
		__entry->hxfar			= hxfar;
		__entry->ipa			= ipa;
	),

	TP_printk("guest fault at PC %#08lx (hxfar %#08lx, "
		  "ipa %#16llx, hsr %#08lx",
		  __entry->vcpu_pc, __entry->hxfar,
		  __entry->ipa, __entry->hsr)
);

TRACE_EVENT(kvm_irq_line,
	TP_PROTO(unsigned int type, int vcpu_idx, int irq_num, int level),
	TP_ARGS(type, vcpu_idx, irq_num, level),

	TP_STRUCT__entry(
		__field(	unsigned int,	type		)
		__field(	int,		vcpu_idx	)
		__field(	int,		irq_num		)
		__field(	int,		level		)
	),

	TP_fast_assign(
		__entry->type		= type;
		__entry->vcpu_idx	= vcpu_idx;
		__entry->irq_num	= irq_num;
		__entry->level		= level;
	),

	TP_printk("Inject %s interrupt (%d), vcpu->idx: %d, num: %d, level: %d",
		  (__entry->type == KVM_ARM_IRQ_TYPE_CPU) ? "CPU" :
		  (__entry->type == KVM_ARM_IRQ_TYPE_PPI) ? "VGIC PPI" :
		  (__entry->type == KVM_ARM_IRQ_TYPE_SPI) ? "VGIC SPI" : "UNKNOWN",
		  __entry->type, __entry->vcpu_idx, __entry->irq_num, __entry->level)
);

TRACE_EVENT(kvm_mmio_emulate,
	TP_PROTO(unsigned long vcpu_pc, unsigned long instr,
		 unsigned long cpsr),
	TP_ARGS(vcpu_pc, instr, cpsr),

	TP_STRUCT__entry(
		__field(	unsigned long,	vcpu_pc		)
		__field(	unsigned long,	instr		)
		__field(	unsigned long,	cpsr		)
	),

	TP_fast_assign(
		__entry->vcpu_pc		= vcpu_pc;
		__entry->instr			= instr;
		__entry->cpsr			= cpsr;
	),

	TP_printk("Emulate MMIO at: 0x%08lx (instr: %08lx, cpsr: %08lx)",
		  __entry->vcpu_pc, __entry->instr, __entry->cpsr)
);

/* Architecturally implementation defined CP15 register access */
TRACE_EVENT(kvm_emulate_cp15_imp,
	TP_PROTO(unsigned long Op1, unsigned long Rt1, unsigned long CRn,
		 unsigned long CRm, unsigned long Op2, bool is_write),
	TP_ARGS(Op1, Rt1, CRn, CRm, Op2, is_write),

	TP_STRUCT__entry(
		__field(	unsigned int,	Op1		)
		__field(	unsigned int,	Rt1		)
		__field(	unsigned int,	CRn		)
		__field(	unsigned int,	CRm		)
		__field(	unsigned int,	Op2		)
		__field(	bool,		is_write	)
	),

	TP_fast_assign(
		__entry->is_write		= is_write;
		__entry->Op1			= Op1;
		__entry->Rt1			= Rt1;
		__entry->CRn			= CRn;
		__entry->CRm			= CRm;
		__entry->Op2			= Op2;
	),

	TP_printk("Implementation defined CP15: %s\tp15, %u, r%u, c%u, c%u, %u",
			(__entry->is_write) ? "mcr" : "mrc",
			__entry->Op1, __entry->Rt1, __entry->CRn,
			__entry->CRm, __entry->Op2)
);

TRACE_EVENT(kvm_wfi,
	TP_PROTO(unsigned long vcpu_pc),
	TP_ARGS(vcpu_pc),

	TP_STRUCT__entry(
		__field(	unsigned long,	vcpu_pc		)
	),

	TP_fast_assign(
		__entry->vcpu_pc		= vcpu_pc;
	),

	TP_printk("guest executed wfi at: 0x%08lx", __entry->vcpu_pc)
);

TRACE_EVENT(kvm_unmap_hva,
	TP_PROTO(unsigned long hva),
	TP_ARGS(hva),

	TP_STRUCT__entry(
		__field(	unsigned long,	hva		)
	),

	TP_fast_assign(
		__entry->hva		= hva;
	),

	TP_printk("mmu notifier unmap hva: %#08lx", __entry->hva)
);

TRACE_EVENT(kvm_unmap_hva_range,
	TP_PROTO(unsigned long start, unsigned long end),
	TP_ARGS(start, end),

	TP_STRUCT__entry(
		__field(	unsigned long,	start		)
		__field(	unsigned long,	end		)
	),

	TP_fast_assign(
		__entry->start		= start;
		__entry->end		= end;
	),

	TP_printk("mmu notifier unmap range: %#08lx -- %#08lx",
		  __entry->start, __entry->end)
);

TRACE_EVENT(kvm_set_spte_hva,
	TP_PROTO(unsigned long hva),
	TP_ARGS(hva),

	TP_STRUCT__entry(
		__field(	unsigned long,	hva		)
	),

	TP_fast_assign(
		__entry->hva		= hva;
	),

	TP_printk("mmu notifier set pte hva: %#08lx", __entry->hva)
);

TRACE_EVENT(kvm_hvc,
	TP_PROTO(unsigned long vcpu_pc, unsigned long r0, unsigned long imm),
	TP_ARGS(vcpu_pc, r0, imm),

	TP_STRUCT__entry(
		__field(	unsigned long,	vcpu_pc		)
		__field(	unsigned long,	r0		)
		__field(	unsigned long,	imm		)
	),

	TP_fast_assign(
		__entry->vcpu_pc		= vcpu_pc;
		__entry->r0		= r0;
		__entry->imm		= imm;
	),

	TP_printk("HVC at 0x%08lx (r0: 0x%08lx, imm: 0x%lx",
		  __entry->vcpu_pc, __entry->r0, __entry->imm)
);

#endif /* _TRACE_KVM_H */

#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH arch/arm/kvm
#undef TRACE_INCLUDE_FILE
#define TRACE_INCLUDE_FILE trace

/* This part must be outside protection */
#include <trace/define_trace.h>