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 struct vmm_stat_type { 40 const char *desc; /* description of statistic */ 41 int index; /* position in the stats buffer */ 42 }; 43 44 void vmm_stat_init(void *arg); 45 46 #define VMM_STAT_DEFINE(type, desc) \ 47 struct vmm_stat_type type[1] = { \ 48 { desc, -1 } \ 49 }; \ 50 SYSINIT(type##_stat, SI_SUB_KLD, SI_ORDER_ANY, vmm_stat_init, type) 51 52 void *vmm_stat_alloc(void); 53 void vmm_stat_free(void *vp); 54 55 /* 56 * 'buf' should be at least fit 'MAX_VMM_STAT_TYPES' entries 57 */ 58 int vmm_stat_copy(struct vm *vm, int vcpu, int *num_stats, uint64_t *buf); 59 const char *vmm_stat_desc(int index); 60 61 static void __inline 62 vmm_stat_incr(struct vm *vm, int vcpu, struct vmm_stat_type *vst, uint64_t x) 63 { 64 #ifdef VMM_KEEP_STATS 65 uint64_t *stats = vcpu_stats(vm, vcpu); 66 if (vst->index >= 0) 67 stats[vst->index] += x; 68 #endif 69 } 70 71 #endif 72