xref: /freebsd/sys/amd64/vmm/vmm_stat.h (revision 730cecb05aaf016ac52ef7cfc691ccec3a0408cd)
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  * $FreeBSD$
30  */
31 
32 #ifndef _VMM_STAT_H_
33 #define	_VMM_STAT_H_
34 
35 struct vm;
36 
37 #define	MAX_VMM_STAT_TYPES	64		/* arbitrary */
38 
39 enum 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 
45 struct vmm_stat_type {
46 	int	index;			/* position in the stats buffer */
47 	const char *desc;		/* description of statistic */
48 	enum vmm_stat_scope scope;
49 };
50 
51 void	vmm_stat_init(void *arg);
52 
53 #define	VMM_STAT_DEFINE(type, desc, scope)				\
54 	struct vmm_stat_type type[1] = {				\
55 		{ -1, desc, scope }					\
56 	};								\
57 	SYSINIT(type##_stat, SI_SUB_KLD, SI_ORDER_ANY, vmm_stat_init, type)
58 
59 #define	VMM_STAT_DECLARE(type)						\
60 	extern struct vmm_stat_type type[1]
61 
62 #define	VMM_STAT(type, desc)		\
63 	VMM_STAT_DEFINE(type, desc, VMM_STAT_SCOPE_ANY)
64 #define	VMM_STAT_INTEL(type, desc)	\
65 	VMM_STAT_DEFINE(type, desc, VMM_STAT_SCOPE_INTEL)
66 #define	VMM_STAT_AMD(type, desc)	\
67 	VMM_STAT_DEFINE(type, desc, VMM_STAT_SCOPE_AMD)
68 
69 void	*vmm_stat_alloc(void);
70 void 	vmm_stat_free(void *vp);
71 
72 /*
73  * 'buf' should be at least fit 'MAX_VMM_STAT_TYPES' entries
74  */
75 int	vmm_stat_copy(struct vm *vm, int vcpu, int *num_stats, uint64_t *buf);
76 const char *vmm_stat_desc(int index);
77 
78 static void __inline
79 vmm_stat_incr(struct vm *vm, int vcpu, struct vmm_stat_type *vst, uint64_t x)
80 {
81 #ifdef	VMM_KEEP_STATS
82 	uint64_t *stats = vcpu_stats(vm, vcpu);
83 	if (vst->index >= 0)
84 		stats[vst->index] += x;
85 #endif
86 }
87 
88 VMM_STAT_DECLARE(VCPU_MIGRATIONS);
89 VMM_STAT_DECLARE(VMEXIT_COUNT);
90 VMM_STAT_DECLARE(VMEXIT_EXTINT);
91 VMM_STAT_DECLARE(VMEXIT_HLT);
92 #endif
93