1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 2011 NetApp, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #ifndef _VMM_STAT_H_ 33 #define _VMM_STAT_H_ 34 35 struct vm; 36 37 #define MAX_VMM_STAT_ELEMS 64 /* arbitrary */ 38 39 enum vmm_stat_scope { 40 VMM_STAT_SCOPE_ANY, 41 }; 42 43 struct vmm_stat_type; 44 typedef void (*vmm_stat_func_t)(struct vcpu *vcpu, 45 struct vmm_stat_type *stat); 46 47 struct vmm_stat_type { 48 int index; /* position in the stats buffer */ 49 int nelems; /* standalone or array */ 50 const char *desc; /* description of statistic */ 51 vmm_stat_func_t func; 52 enum vmm_stat_scope scope; 53 }; 54 55 void vmm_stat_register(void *arg); 56 57 #define VMM_STAT_FDEFINE(type, nelems, desc, func, scope) \ 58 struct vmm_stat_type type[1] = { \ 59 { -1, nelems, desc, func, scope } \ 60 }; \ 61 SYSINIT(type##_stat, SI_SUB_KLD, SI_ORDER_ANY, vmm_stat_register, type) 62 63 #define VMM_STAT_DEFINE(type, nelems, desc, scope) \ 64 VMM_STAT_FDEFINE(type, nelems, desc, NULL, scope) 65 66 #define VMM_STAT_DECLARE(type) \ 67 extern struct vmm_stat_type type[1] 68 69 #define VMM_STAT(type, desc) \ 70 VMM_STAT_DEFINE(type, 1, desc, VMM_STAT_SCOPE_ANY) 71 72 #define VMM_STAT_FUNC(type, desc, func) \ 73 VMM_STAT_FDEFINE(type, 1, desc, func, VMM_STAT_SCOPE_ANY) 74 75 #define VMM_STAT_ARRAY(type, nelems, desc) \ 76 VMM_STAT_DEFINE(type, nelems, desc, VMM_STAT_SCOPE_ANY) 77 78 void *vmm_stat_alloc(void); 79 void vmm_stat_init(void *vp); 80 void vmm_stat_free(void *vp); 81 82 int vmm_stat_copy(struct vcpu *vcpu, int index, int count, 83 int *num_stats, uint64_t *buf); 84 int vmm_stat_desc_copy(int index, char *buf, int buflen); 85 86 static void __inline 87 vmm_stat_array_incr(struct vcpu *vcpu, struct vmm_stat_type *vst, int statidx, 88 uint64_t x) 89 { 90 #ifdef VMM_KEEP_STATS 91 uint64_t *stats; 92 93 stats = vcpu_stats(vcpu); 94 95 if (vst->index >= 0 && statidx < vst->nelems) 96 stats[vst->index + statidx] += x; 97 #endif 98 } 99 100 static void __inline 101 vmm_stat_array_set(struct vcpu *vcpu, struct vmm_stat_type *vst, int statidx, 102 uint64_t val) 103 { 104 #ifdef VMM_KEEP_STATS 105 uint64_t *stats; 106 107 stats = vcpu_stats(vcpu); 108 109 if (vst->index >= 0 && statidx < vst->nelems) 110 stats[vst->index + statidx] = val; 111 #endif 112 } 113 114 static void __inline 115 vmm_stat_incr(struct vcpu *vcpu, struct vmm_stat_type *vst, uint64_t x) 116 { 117 118 #ifdef VMM_KEEP_STATS 119 vmm_stat_array_incr(vcpu, vst, 0, x); 120 #endif 121 } 122 123 static void __inline 124 vmm_stat_set(struct vcpu *vcpu, struct vmm_stat_type *vst, uint64_t val) 125 { 126 127 #ifdef VMM_KEEP_STATS 128 vmm_stat_array_set(vcpu, vst, 0, val); 129 #endif 130 } 131 132 VMM_STAT_DECLARE(VMEXIT_COUNT); 133 VMM_STAT_DECLARE(VMEXIT_UNKNOWN); 134 VMM_STAT_DECLARE(VMEXIT_WFI); 135 VMM_STAT_DECLARE(VMEXIT_WFE); 136 VMM_STAT_DECLARE(VMEXIT_HVC); 137 VMM_STAT_DECLARE(VMEXIT_MSR); 138 VMM_STAT_DECLARE(VMEXIT_DATA_ABORT); 139 VMM_STAT_DECLARE(VMEXIT_INSN_ABORT); 140 VMM_STAT_DECLARE(VMEXIT_UNHANDLED_SYNC); 141 VMM_STAT_DECLARE(VMEXIT_IRQ); 142 VMM_STAT_DECLARE(VMEXIT_FIQ); 143 VMM_STAT_DECLARE(VMEXIT_UNHANDLED_EL2); 144 VMM_STAT_DECLARE(VMEXIT_UNHANDLED); 145 #endif 146