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/*-
* Copyright (c) 2011 NetApp, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/smp.h>
#include <machine/vmm.h>
#include "vmm_util.h"
#include "vmm_stat.h"
static int vstnum;
static struct vmm_stat_type *vsttab[MAX_VMM_STAT_TYPES];
static MALLOC_DEFINE(M_VMM_STAT, "vmm stat", "vmm stat");
void
vmm_stat_init(void *arg)
{
struct vmm_stat_type *vst = arg;
/* We require all stats to identify themselves with a description */
if (vst->desc == NULL)
return;
if (vst->scope == VMM_STAT_SCOPE_INTEL && !vmm_is_intel())
return;
if (vst->scope == VMM_STAT_SCOPE_AMD && !vmm_is_amd())
return;
if (vstnum >= MAX_VMM_STAT_TYPES) {
printf("Cannot accomodate vmm stat type \"%s\"!\n", vst->desc);
return;
}
vst->index = vstnum;
vsttab[vstnum++] = vst;
}
int
vmm_stat_copy(struct vm *vm, int vcpu, int *num_stats, uint64_t *buf)
{
int i;
uint64_t *stats;
if (vcpu < 0 || vcpu >= VM_MAXCPU)
return (EINVAL);
stats = vcpu_stats(vm, vcpu);
for (i = 0; i < vstnum; i++)
buf[i] = stats[i];
*num_stats = vstnum;
return (0);
}
void *
vmm_stat_alloc(void)
{
u_long size;
size = vstnum * sizeof(uint64_t);
return (malloc(size, M_VMM_STAT, M_ZERO | M_WAITOK));
}
void
vmm_stat_free(void *vp)
{
free(vp, M_VMM_STAT);
}
const char *
vmm_stat_desc(int index)
{
if (index >= 0 && index < vstnum)
return (vsttab[index]->desc);
else
return (NULL);
}
/* global statistics */
VMM_STAT(VCPU_MIGRATIONS, "vcpu migration across host cpus");
VMM_STAT(VMEXIT_COUNT, "total number of vm exits");
VMM_STAT(VMEXIT_EXTINT, "vm exits due to external interrupt");
VMM_STAT(VMEXIT_HLT, "number of times hlt was intercepted");
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