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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.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 THE REGENTS 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.
*
* $FreeBSD$
*/
#ifndef _VMM_STAT_H_
#define _VMM_STAT_H_
struct vm;
#define MAX_VMM_STAT_TYPES 64 /* arbitrary */
struct vmm_stat_type {
const char *desc; /* description of statistic */
int index; /* position in the stats buffer */
};
void vmm_stat_init(void *arg);
#define VMM_STAT_DEFINE(type, desc) \
struct vmm_stat_type type[1] = { \
{ desc, -1 } \
}; \
SYSINIT(type##_stat, SI_SUB_KLD, SI_ORDER_ANY, vmm_stat_init, type)
void *vmm_stat_alloc(void);
void vmm_stat_free(void *vp);
/*
* 'buf' should be at least fit 'MAX_VMM_STAT_TYPES' entries
*/
int vmm_stat_copy(struct vm *vm, int vcpu, int *num_stats, uint64_t *buf);
const char *vmm_stat_desc(int index);
static void __inline
vmm_stat_incr(struct vm *vm, int vcpu, struct vmm_stat_type *vst, uint64_t x)
{
#ifdef VMM_KEEP_STATS
uint64_t *stats = vcpu_stats(vm, vcpu);
if (vst->index >= 0)
stats[vst->index] += x;
#endif
}
#endif
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