vmm_stat.h revision 270074 
1/*-
2 * Copyright (c) 2011 NetApp, Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 *    may be used to endorse or promote products derived from this software
15 *    without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD: stable/10/sys/amd64/vmm/vmm_stat.h 270074 2014-08-17 01:23:52Z grehan $
30 */
31
32#ifndef _VMM_STAT_H_
33#define	_VMM_STAT_H_
34
35struct vm;
36
37#define	MAX_VMM_STAT_ELEMS	64		/* arbitrary */
38
39enum vmm_stat_scope {
40	VMM_STAT_SCOPE_ANY,
41	VMM_STAT_SCOPE_INTEL,		/* Intel VMX specific statistic */
42	VMM_STAT_SCOPE_AMD,		/* AMD SVM specific statistic */
43};
44
45struct vmm_stat_type;
46typedef void (*vmm_stat_func_t)(struct vm *vm, int vcpu,
47    struct vmm_stat_type *stat);
48
49struct vmm_stat_type {
50	int	index;			/* position in the stats buffer */
51	int	nelems;			/* standalone or array */
52	const char *desc;		/* description of statistic */
53	vmm_stat_func_t func;
54	enum vmm_stat_scope scope;
55};
56
57void	vmm_stat_register(void *arg);
58
59#define	VMM_STAT_FDEFINE(type, nelems, desc, func, scope)		\
60	struct vmm_stat_type type[1] = {				\
61		{ -1, nelems, desc, func, scope }			\
62	};								\
63	SYSINIT(type##_stat, SI_SUB_KLD, SI_ORDER_ANY, vmm_stat_register, type)
64
65#define VMM_STAT_DEFINE(type, nelems, desc, scope) 			\
66	VMM_STAT_FDEFINE(type, nelems, desc, NULL, scope)
67
68#define	VMM_STAT_DECLARE(type)						\
69	extern struct vmm_stat_type type[1]
70
71#define	VMM_STAT(type, desc)		\
72	VMM_STAT_DEFINE(type, 1, desc, VMM_STAT_SCOPE_ANY)
73#define	VMM_STAT_INTEL(type, desc)	\
74	VMM_STAT_DEFINE(type, 1, desc, VMM_STAT_SCOPE_INTEL)
75#define	VMM_STAT_AMD(type, desc)	\
76	VMM_STAT_DEFINE(type, 1, desc, VMM_STAT_SCOPE_AMD)
77
78#define	VMM_STAT_FUNC(type, desc, func)	\
79	VMM_STAT_FDEFINE(type, 1, desc, func, VMM_STAT_SCOPE_ANY)
80
81#define	VMM_STAT_ARRAY(type, nelems, desc)	\
82	VMM_STAT_DEFINE(type, nelems, desc, VMM_STAT_SCOPE_ANY)
83
84void	*vmm_stat_alloc(void);
85void	vmm_stat_init(void *vp);
86void 	vmm_stat_free(void *vp);
87
88/*
89 * 'buf' should be at least fit 'MAX_VMM_STAT_TYPES' entries
90 */
91int	vmm_stat_copy(struct vm *vm, int vcpu, int *num_stats, uint64_t *buf);
92int	vmm_stat_desc_copy(int index, char *buf, int buflen);
93
94static void __inline
95vmm_stat_array_incr(struct vm *vm, int vcpu, struct vmm_stat_type *vst,
96		    int statidx, uint64_t x)
97{
98#ifdef VMM_KEEP_STATS
99	uint64_t *stats;
100
101	stats = vcpu_stats(vm, vcpu);
102
103	if (vst->index >= 0 && statidx < vst->nelems)
104		stats[vst->index + statidx] += x;
105#endif
106}
107
108static void __inline
109vmm_stat_array_set(struct vm *vm, int vcpu, struct vmm_stat_type *vst,
110		   int statidx, uint64_t val)
111{
112#ifdef VMM_KEEP_STATS
113	uint64_t *stats;
114
115	stats = vcpu_stats(vm, vcpu);
116
117	if (vst->index >= 0 && statidx < vst->nelems)
118		stats[vst->index + statidx] = val;
119#endif
120}
121
122static void __inline
123vmm_stat_incr(struct vm *vm, int vcpu, struct vmm_stat_type *vst, uint64_t x)
124{
125
126#ifdef VMM_KEEP_STATS
127	vmm_stat_array_incr(vm, vcpu, vst, 0, x);
128#endif
129}
130
131static void __inline
132vmm_stat_set(struct vm *vm, int vcpu, struct vmm_stat_type *vst, uint64_t val)
133{
134
135#ifdef VMM_KEEP_STATS
136	vmm_stat_array_set(vm, vcpu, vst, 0, val);
137#endif
138}
139
140VMM_STAT_DECLARE(VCPU_MIGRATIONS);
141VMM_STAT_DECLARE(VMEXIT_COUNT);
142VMM_STAT_DECLARE(VMEXIT_EXTINT);
143VMM_STAT_DECLARE(VMEXIT_HLT);
144VMM_STAT_DECLARE(VMEXIT_CR_ACCESS);
145VMM_STAT_DECLARE(VMEXIT_RDMSR);
146VMM_STAT_DECLARE(VMEXIT_WRMSR);
147VMM_STAT_DECLARE(VMEXIT_MTRAP);
148VMM_STAT_DECLARE(VMEXIT_PAUSE);
149VMM_STAT_DECLARE(VMEXIT_INTR_WINDOW);
150VMM_STAT_DECLARE(VMEXIT_NMI_WINDOW);
151VMM_STAT_DECLARE(VMEXIT_INOUT);
152VMM_STAT_DECLARE(VMEXIT_CPUID);
153VMM_STAT_DECLARE(VMEXIT_NESTED_FAULT);
154VMM_STAT_DECLARE(VMEXIT_INST_EMUL);
155VMM_STAT_DECLARE(VMEXIT_UNKNOWN);
156VMM_STAT_DECLARE(VMEXIT_ASTPENDING);
157VMM_STAT_DECLARE(VMEXIT_USERSPACE);
158VMM_STAT_DECLARE(VMEXIT_RENDEZVOUS);
159VMM_STAT_DECLARE(VMEXIT_EXCEPTION);
160#endif
161