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 * $FreeBSD$
32 */
33
34 #ifndef _VMM_STAT_H_
35 #define _VMM_STAT_H_
36
37 struct vm;
38
39 #define MAX_VMM_STAT_ELEMS 64 /* arbitrary */
40
41 enum vmm_stat_scope {
42 VMM_STAT_SCOPE_ANY,
43 VMM_STAT_SCOPE_INTEL, /* Intel VMX specific statistic */
44 VMM_STAT_SCOPE_AMD, /* AMD SVM specific statistic */
45 };
46
47 struct vmm_stat_type;
48 typedef void (*vmm_stat_func_t)(struct vm *vm, int vcpu,
49 struct vmm_stat_type *stat);
50
51 struct vmm_stat_type {
52 int index; /* position in the stats buffer */
53 int nelems; /* standalone or array */
54 const char *desc; /* description of statistic */
55 vmm_stat_func_t func;
56 enum vmm_stat_scope scope;
57 };
58
59 void vmm_stat_register(void *arg);
60
61 #define VMM_STAT_FDEFINE(type, nelems, desc, func, scope) \
62 struct vmm_stat_type type[1] = { \
63 { -1, nelems, desc, func, scope } \
64 }; \
65 SYSINIT(type##_stat, SI_SUB_KLD, SI_ORDER_ANY, vmm_stat_register, type)
66
67 #define VMM_STAT_DEFINE(type, nelems, desc, scope) \
68 VMM_STAT_FDEFINE(type, nelems, desc, NULL, scope)
69
70 #define VMM_STAT_DECLARE(type) \
71 extern struct vmm_stat_type type[1]
72
73 #define VMM_STAT(type, desc) \
74 VMM_STAT_DEFINE(type, 1, desc, VMM_STAT_SCOPE_ANY)
75 #define VMM_STAT_INTEL(type, desc) \
76 VMM_STAT_DEFINE(type, 1, desc, VMM_STAT_SCOPE_INTEL)
77 #define VMM_STAT_AMD(type, desc) \
78 VMM_STAT_DEFINE(type, 1, desc, VMM_STAT_SCOPE_AMD)
79
80 #define VMM_STAT_FUNC(type, desc, func) \
81 VMM_STAT_FDEFINE(type, 1, desc, func, VMM_STAT_SCOPE_ANY)
82
83 #define VMM_STAT_ARRAY(type, nelems, desc) \
84 VMM_STAT_DEFINE(type, nelems, desc, VMM_STAT_SCOPE_ANY)
85
86 void *vmm_stat_alloc(void);
87 void vmm_stat_init(void *vp);
88 void vmm_stat_free(void *vp);
89
90 /*
91 * 'buf' should be at least fit 'MAX_VMM_STAT_TYPES' entries
92 */
93 int vmm_stat_copy(struct vm *vm, int vcpu, int *num_stats, uint64_t *buf);
94 int vmm_stat_desc_copy(int index, char *buf, int buflen);
95
96 static void __inline
vmm_stat_array_incr(struct vm * vm,int vcpu,struct vmm_stat_type * vst,int statidx,uint64_t x)97 vmm_stat_array_incr(struct vm *vm, int vcpu, struct vmm_stat_type *vst,
98 int statidx, uint64_t x)
99 {
100 #ifdef VMM_KEEP_STATS
101 uint64_t *stats;
102
103 stats = vcpu_stats(vm, vcpu);
104
105 if (vst->index >= 0 && statidx < vst->nelems)
106 stats[vst->index + statidx] += x;
107 #endif
108 }
109
110 static void __inline
vmm_stat_array_set(struct vm * vm,int vcpu,struct vmm_stat_type * vst,int statidx,uint64_t val)111 vmm_stat_array_set(struct vm *vm, int vcpu, struct vmm_stat_type *vst,
112 int statidx, uint64_t val)
113 {
114 #ifdef VMM_KEEP_STATS
115 uint64_t *stats;
116
117 stats = vcpu_stats(vm, vcpu);
118
119 if (vst->index >= 0 && statidx < vst->nelems)
120 stats[vst->index + statidx] = val;
121 #endif
122 }
123
124 static void __inline
vmm_stat_incr(struct vm * vm,int vcpu,struct vmm_stat_type * vst,uint64_t x)125 vmm_stat_incr(struct vm *vm, int vcpu, struct vmm_stat_type *vst, uint64_t x)
126 {
127
128 #ifdef VMM_KEEP_STATS
129 vmm_stat_array_incr(vm, vcpu, vst, 0, x);
130 #endif
131 }
132
133 static void __inline
vmm_stat_set(struct vm * vm,int vcpu,struct vmm_stat_type * vst,uint64_t val)134 vmm_stat_set(struct vm *vm, int vcpu, struct vmm_stat_type *vst, uint64_t val)
135 {
136
137 #ifdef VMM_KEEP_STATS
138 vmm_stat_array_set(vm, vcpu, vst, 0, val);
139 #endif
140 }
141
142 VMM_STAT_DECLARE(VCPU_MIGRATIONS);
143 VMM_STAT_DECLARE(VMEXIT_COUNT);
144 VMM_STAT_DECLARE(VMEXIT_EXTINT);
145 VMM_STAT_DECLARE(VMEXIT_HLT);
146 VMM_STAT_DECLARE(VMEXIT_CR_ACCESS);
147 VMM_STAT_DECLARE(VMEXIT_RDMSR);
148 VMM_STAT_DECLARE(VMEXIT_WRMSR);
149 VMM_STAT_DECLARE(VMEXIT_MTRAP);
150 VMM_STAT_DECLARE(VMEXIT_PAUSE);
151 VMM_STAT_DECLARE(VMEXIT_INTR_WINDOW);
152 VMM_STAT_DECLARE(VMEXIT_NMI_WINDOW);
153 VMM_STAT_DECLARE(VMEXIT_INOUT);
154 VMM_STAT_DECLARE(VMEXIT_CPUID);
155 VMM_STAT_DECLARE(VMEXIT_NESTED_FAULT);
156 VMM_STAT_DECLARE(VMEXIT_INST_EMUL);
157 VMM_STAT_DECLARE(VMEXIT_UNKNOWN);
158 VMM_STAT_DECLARE(VMEXIT_ASTPENDING);
159 VMM_STAT_DECLARE(VMEXIT_USERSPACE);
160 VMM_STAT_DECLARE(VMEXIT_RENDEZVOUS);
161 VMM_STAT_DECLARE(VMEXIT_EXCEPTION);
162 VMM_STAT_DECLARE(VMEXIT_REQIDLE);
163 #endif
164