vmm_stat.h revision 270071 
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 270071 2014-08-17 01:00:42Z 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 {
46	int	index;			/* position in the stats buffer */
47	int	nelems;			/* standalone or array */
48	const char *desc;		/* description of statistic */
49	enum vmm_stat_scope scope;
50};
51
52void	vmm_stat_register(void *arg);
53
54#define	VMM_STAT_DEFINE(type, nelems, desc, scope)			\
55	struct vmm_stat_type type[1] = {				\
56		{ -1, nelems, desc, scope }				\
57	};								\
58	SYSINIT(type##_stat, SI_SUB_KLD, SI_ORDER_ANY, vmm_stat_register, type)
59
60#define	VMM_STAT_DECLARE(type)						\
61	extern struct vmm_stat_type type[1]
62
63#define	VMM_STAT(type, desc)		\
64	VMM_STAT_DEFINE(type, 1, desc, VMM_STAT_SCOPE_ANY)
65#define	VMM_STAT_INTEL(type, desc)	\
66	VMM_STAT_DEFINE(type, 1, desc, VMM_STAT_SCOPE_INTEL)
67#define	VMM_STAT_AMD(type, desc)	\
68	VMM_STAT_DEFINE(type, 1, desc, VMM_STAT_SCOPE_AMD)
69
70#define	VMM_STAT_ARRAY(type, nelems, desc)	\
71	VMM_STAT_DEFINE(type, nelems, desc, VMM_STAT_SCOPE_ANY)
72
73void	*vmm_stat_alloc(void);
74void	vmm_stat_init(void *vp);
75void 	vmm_stat_free(void *vp);
76
77/*
78 * 'buf' should be at least fit 'MAX_VMM_STAT_TYPES' entries
79 */
80int	vmm_stat_copy(struct vm *vm, int vcpu, int *num_stats, uint64_t *buf);
81int	vmm_stat_desc_copy(int index, char *buf, int buflen);
82
83static void __inline
84vmm_stat_array_incr(struct vm *vm, int vcpu, struct vmm_stat_type *vst,
85		    int statidx, uint64_t x)
86{
87#ifdef VMM_KEEP_STATS
88	uint64_t *stats;
89
90	stats = vcpu_stats(vm, vcpu);
91
92	if (vst->index >= 0 && statidx < vst->nelems)
93		stats[vst->index + statidx] += x;
94#endif
95}
96
97
98static void __inline
99vmm_stat_incr(struct vm *vm, int vcpu, struct vmm_stat_type *vst, uint64_t x)
100{
101
102#ifdef VMM_KEEP_STATS
103	vmm_stat_array_incr(vm, vcpu, vst, 0, x);
104#endif
105}
106
107VMM_STAT_DECLARE(VCPU_MIGRATIONS);
108VMM_STAT_DECLARE(VMEXIT_COUNT);
109VMM_STAT_DECLARE(VMEXIT_EXTINT);
110VMM_STAT_DECLARE(VMEXIT_HLT);
111VMM_STAT_DECLARE(VMEXIT_CR_ACCESS);
112VMM_STAT_DECLARE(VMEXIT_RDMSR);
113VMM_STAT_DECLARE(VMEXIT_WRMSR);
114VMM_STAT_DECLARE(VMEXIT_MTRAP);
115VMM_STAT_DECLARE(VMEXIT_PAUSE);
116VMM_STAT_DECLARE(VMEXIT_INTR_WINDOW);
117VMM_STAT_DECLARE(VMEXIT_NMI_WINDOW);
118VMM_STAT_DECLARE(VMEXIT_INOUT);
119VMM_STAT_DECLARE(VMEXIT_CPUID);
120VMM_STAT_DECLARE(VMEXIT_NESTED_FAULT);
121VMM_STAT_DECLARE(VMEXIT_INST_EMUL);
122VMM_STAT_DECLARE(VMEXIT_UNKNOWN);
123VMM_STAT_DECLARE(VMEXIT_ASTPENDING);
124VMM_STAT_DECLARE(VMEXIT_USERSPACE);
125VMM_STAT_DECLARE(VMEXIT_RENDEZVOUS);
126VMM_STAT_DECLARE(VMEXIT_EXCEPTION);
127#endif
128