1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 2011 NetApp, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31 /*
32 * Copyright 2018 Joyent, Inc.
33 */
34
35 #ifndef _VMM_STAT_H_
36 #define _VMM_STAT_H_
37
38 #include <machine/vmm.h>
39
40 struct vm;
41
42 #ifdef __FreeBSD__
43 #define MAX_VMM_STAT_ELEMS 64 /* arbitrary */
44 #else
45 #define MAX_VMM_STAT_ELEMS (64 + VM_MAXCPU) /* arbitrary */
46 #endif
47
48 enum vmm_stat_scope {
49 VMM_STAT_SCOPE_ANY,
50 VMM_STAT_SCOPE_INTEL, /* Intel VMX specific statistic */
51 VMM_STAT_SCOPE_AMD, /* AMD SVM specific statistic */
52 };
53
54 struct vmm_stat_type;
55 typedef void (*vmm_stat_func_t)(struct vm *vm, int vcpu,
56 struct vmm_stat_type *stat);
57
58 struct vmm_stat_type {
59 int index; /* position in the stats buffer */
60 int nelems; /* standalone or array */
61 const char *desc; /* description of statistic */
62 vmm_stat_func_t func;
63 enum vmm_stat_scope scope;
64 };
65
66 void vmm_stat_register(void *arg);
67
68 #define VMM_STAT_FDEFINE(type, nelems, desc, func, scope) \
69 struct vmm_stat_type type[1] = { \
70 { -1, nelems, desc, func, scope } \
71 }; \
72 SYSINIT(type##_stat, SI_SUB_KLD, SI_ORDER_ANY, vmm_stat_register, type)
73
74 #define VMM_STAT_DEFINE(type, nelems, desc, scope) \
75 VMM_STAT_FDEFINE(type, nelems, desc, NULL, scope)
76
77 #define VMM_STAT_DECLARE(type) \
78 extern struct vmm_stat_type type[1]
79
80 #define VMM_STAT(type, desc) \
81 VMM_STAT_DEFINE(type, 1, desc, VMM_STAT_SCOPE_ANY)
82 #define VMM_STAT_INTEL(type, desc) \
83 VMM_STAT_DEFINE(type, 1, desc, VMM_STAT_SCOPE_INTEL)
84 #define VMM_STAT_AMD(type, desc) \
85 VMM_STAT_DEFINE(type, 1, desc, VMM_STAT_SCOPE_AMD)
86
87 #define VMM_STAT_FUNC(type, desc, func) \
88 VMM_STAT_FDEFINE(type, 1, desc, func, VMM_STAT_SCOPE_ANY)
89
90 #define VMM_STAT_ARRAY(type, nelems, desc) \
91 VMM_STAT_DEFINE(type, nelems, desc, VMM_STAT_SCOPE_ANY)
92
93 void *vmm_stat_alloc(void);
94 void vmm_stat_init(void *vp);
95 void vmm_stat_free(void *vp);
96
97 int vmm_stat_copy(struct vm *vm, int vcpu, int index, int count,
98 int *num_stats, uint64_t *buf);
99 int vmm_stat_desc_copy(int index, char *buf, int buflen);
100
101 static __inline void
vmm_stat_array_incr(struct vm * vm,int vcpu,struct vmm_stat_type * vst,int statidx,uint64_t x)102 vmm_stat_array_incr(struct vm *vm, int vcpu, struct vmm_stat_type *vst,
103 int statidx, uint64_t x)
104 {
105 #ifdef VMM_KEEP_STATS
106 uint64_t *stats;
107
108 stats = vcpu_stats(vm, vcpu);
109
110 if (vst->index >= 0 && statidx < vst->nelems)
111 stats[vst->index + statidx] += x;
112 #endif
113 }
114
115 static __inline void
vmm_stat_array_set(struct vm * vm,int vcpu,struct vmm_stat_type * vst,int statidx,uint64_t val)116 vmm_stat_array_set(struct vm *vm, int vcpu, struct vmm_stat_type *vst,
117 int statidx, uint64_t val)
118 {
119 #ifdef VMM_KEEP_STATS
120 uint64_t *stats;
121
122 stats = vcpu_stats(vm, vcpu);
123
124 if (vst->index >= 0 && statidx < vst->nelems)
125 stats[vst->index + statidx] = val;
126 #endif
127 }
128
129 static __inline void
vmm_stat_incr(struct vm * vm,int vcpu,struct vmm_stat_type * vst,uint64_t x)130 vmm_stat_incr(struct vm *vm, int vcpu, struct vmm_stat_type *vst, uint64_t x)
131 {
132
133 #ifdef VMM_KEEP_STATS
134 vmm_stat_array_incr(vm, vcpu, vst, 0, x);
135 #endif
136 }
137
138 static __inline void
vmm_stat_set(struct vm * vm,int vcpu,struct vmm_stat_type * vst,uint64_t val)139 vmm_stat_set(struct vm *vm, int vcpu, struct vmm_stat_type *vst, uint64_t val)
140 {
141
142 #ifdef VMM_KEEP_STATS
143 vmm_stat_array_set(vm, vcpu, vst, 0, val);
144 #endif
145 }
146
147 VMM_STAT_DECLARE(VCPU_MIGRATIONS);
148 VMM_STAT_DECLARE(VMEXIT_COUNT);
149 VMM_STAT_DECLARE(VMEXIT_EXTINT);
150 VMM_STAT_DECLARE(VMEXIT_HLT);
151 VMM_STAT_DECLARE(VMEXIT_CR_ACCESS);
152 VMM_STAT_DECLARE(VMEXIT_RDMSR);
153 VMM_STAT_DECLARE(VMEXIT_WRMSR);
154 VMM_STAT_DECLARE(VMEXIT_MTRAP);
155 VMM_STAT_DECLARE(VMEXIT_PAUSE);
156 VMM_STAT_DECLARE(VMEXIT_INTR_WINDOW);
157 VMM_STAT_DECLARE(VMEXIT_NMI_WINDOW);
158 VMM_STAT_DECLARE(VMEXIT_INOUT);
159 VMM_STAT_DECLARE(VMEXIT_CPUID);
160 VMM_STAT_DECLARE(VMEXIT_NESTED_FAULT);
161 VMM_STAT_DECLARE(VMEXIT_MMIO_EMUL);
162 VMM_STAT_DECLARE(VMEXIT_UNKNOWN);
163 VMM_STAT_DECLARE(VMEXIT_ASTPENDING);
164 VMM_STAT_DECLARE(VMEXIT_EXCEPTION);
165 VMM_STAT_DECLARE(VMEXIT_REQIDLE);
166 VMM_STAT_DECLARE(VMEXIT_RUN_STATE);
167 #endif
168