2 * Copyright (c) 2011 NetApp, Inc.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
14 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
33 #include <sys/kernel.h>
34 #include <sys/systm.h>
35 #include <sys/malloc.h>
38 #include <machine/vmm.h>
43 * 'vst_num_elems' is the total number of addressable statistic elements
44 * 'vst_num_types' is the number of unique statistic types
46 * It is always true that 'vst_num_elems' is greater than or equal to
47 * 'vst_num_types'. This is because a stat type may represent more than
48 * one element (for e.g. VMM_STAT_ARRAY).
50 static int vst_num_elems, vst_num_types;
51 static struct vmm_stat_type *vsttab[MAX_VMM_STAT_ELEMS];
53 static MALLOC_DEFINE(M_VMM_STAT, "vmm stat", "vmm stat");
56 vmm_stat_init(void *arg)
58 struct vmm_stat_type *vst = arg;
60 /* We require all stats to identify themselves with a description */
61 if (vst->desc == NULL)
64 if (vst->scope == VMM_STAT_SCOPE_INTEL && !vmm_is_intel())
67 if (vst->scope == VMM_STAT_SCOPE_AMD && !vmm_is_amd())
70 if (vst_num_elems + vst->nelems >= MAX_VMM_STAT_ELEMS) {
71 printf("Cannot accomodate vmm stat type \"%s\"!\n", vst->desc);
75 vst->index = vst_num_elems;
76 vst_num_elems += vst->nelems;
78 vsttab[vst_num_types++] = vst;
82 vmm_stat_copy(struct vm *vm, int vcpu, int *num_stats, uint64_t *buf)
87 if (vcpu < 0 || vcpu >= VM_MAXCPU)
90 stats = vcpu_stats(vm, vcpu);
91 for (i = 0; i < vst_num_elems; i++)
93 *num_stats = vst_num_elems;
102 size = vst_num_elems * sizeof(uint64_t);
104 return (malloc(size, M_VMM_STAT, M_ZERO | M_WAITOK));
108 vmm_stat_free(void *vp)
110 free(vp, M_VMM_STAT);
114 vmm_stat_desc_copy(int index, char *buf, int bufsize)
117 struct vmm_stat_type *vst;
119 for (i = 0; i < vst_num_types; i++) {
121 if (index >= vst->index && index < vst->index + vst->nelems) {
122 if (vst->nelems > 1) {
123 snprintf(buf, bufsize, "%s[%d]",
124 vst->desc, index - vst->index);
126 strlcpy(buf, vst->desc, bufsize);
128 return (0); /* found it */
135 /* global statistics */
136 VMM_STAT(VCPU_MIGRATIONS, "vcpu migration across host cpus");
137 VMM_STAT(VMEXIT_COUNT, "total number of vm exits");
138 VMM_STAT(VMEXIT_EXTINT, "vm exits due to external interrupt");
139 VMM_STAT(VMEXIT_HLT, "number of times hlt was intercepted");
140 VMM_STAT(VMEXIT_CR_ACCESS, "number of times %cr access was intercepted");
141 VMM_STAT(VMEXIT_RDMSR, "number of times rdmsr was intercepted");
142 VMM_STAT(VMEXIT_WRMSR, "number of times wrmsr was intercepted");
143 VMM_STAT(VMEXIT_MTRAP, "number of monitor trap exits");
144 VMM_STAT(VMEXIT_PAUSE, "number of times pause was intercepted");
145 VMM_STAT(VMEXIT_INTR_WINDOW, "vm exits due to interrupt window opening");
146 VMM_STAT(VMEXIT_NMI_WINDOW, "vm exits due to nmi window opening");
147 VMM_STAT(VMEXIT_INOUT, "number of times in/out was intercepted");
148 VMM_STAT(VMEXIT_CPUID, "number of times cpuid was intercepted");
149 VMM_STAT(VMEXIT_EPT_FAULT, "vm exits due to nested page fault");
150 VMM_STAT(VMEXIT_UNKNOWN, "number of vm exits for unknown reason");
151 VMM_STAT(VMEXIT_ASTPENDING, "number of times astpending at exit");
152 VMM_STAT(VMEXIT_USERSPACE, "number of vm exits handled in userspace");