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("ipa %#llx, hsr %#08lx, hxfar %#08lx, pc %#08lx",
		  __entry->ipa, __entry->hsr,
		  __entry->hxfar, __entry->vcpu_pc)
);

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>
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234