1221828Sgrehan/*- 2221828Sgrehan * Copyright (c) 2011 NetApp, Inc. 3221828Sgrehan * All rights reserved. 4221828Sgrehan * 5221828Sgrehan * Redistribution and use in source and binary forms, with or without 6221828Sgrehan * modification, are permitted provided that the following conditions 7221828Sgrehan * are met: 8221828Sgrehan * 1. Redistributions of source code must retain the above copyright 9221828Sgrehan * notice, this list of conditions and the following disclaimer. 10221828Sgrehan * 2. Redistributions in binary form must reproduce the above copyright 11221828Sgrehan * notice, this list of conditions and the following disclaimer in the 12221828Sgrehan * documentation and/or other materials provided with the distribution. 13221828Sgrehan * 14221828Sgrehan * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND 15221828Sgrehan * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16221828Sgrehan * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17221828Sgrehan * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE 18221828Sgrehan * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19221828Sgrehan * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20221828Sgrehan * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21221828Sgrehan * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22221828Sgrehan * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23221828Sgrehan * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24221828Sgrehan * SUCH DAMAGE. 25221828Sgrehan * 26221828Sgrehan * $FreeBSD: stable/11/sys/amd64/vmm/vmm_stat.c 348271 2019-05-25 11:27:56Z rgrimes $ 27221828Sgrehan */ 28221828Sgrehan 29221828Sgrehan#include <sys/cdefs.h> 30221828Sgrehan__FBSDID("$FreeBSD: stable/11/sys/amd64/vmm/vmm_stat.c 348271 2019-05-25 11:27:56Z rgrimes $"); 31221828Sgrehan 32221828Sgrehan#include <sys/param.h> 33221828Sgrehan#include <sys/kernel.h> 34221828Sgrehan#include <sys/systm.h> 35221828Sgrehan#include <sys/malloc.h> 36221828Sgrehan 37221828Sgrehan#include <machine/vmm.h> 38248389Sneel#include "vmm_util.h" 39221828Sgrehan#include "vmm_stat.h" 40221828Sgrehan 41250427Sneel/* 42250427Sneel * 'vst_num_elems' is the total number of addressable statistic elements 43250427Sneel * 'vst_num_types' is the number of unique statistic types 44250427Sneel * 45250427Sneel * It is always true that 'vst_num_elems' is greater than or equal to 46250427Sneel * 'vst_num_types'. This is because a stat type may represent more than 47250427Sneel * one element (for e.g. VMM_STAT_ARRAY). 48250427Sneel */ 49250427Sneelstatic int vst_num_elems, vst_num_types; 50250427Sneelstatic struct vmm_stat_type *vsttab[MAX_VMM_STAT_ELEMS]; 51221828Sgrehan 52221828Sgrehanstatic MALLOC_DEFINE(M_VMM_STAT, "vmm stat", "vmm stat"); 53221828Sgrehan 54267216Sneel#define vst_size ((size_t)vst_num_elems * sizeof(uint64_t)) 55267216Sneel 56221828Sgrehanvoid 57267216Sneelvmm_stat_register(void *arg) 58221828Sgrehan{ 59221828Sgrehan struct vmm_stat_type *vst = arg; 60221828Sgrehan 61221828Sgrehan /* We require all stats to identify themselves with a description */ 62221828Sgrehan if (vst->desc == NULL) 63221828Sgrehan return; 64221828Sgrehan 65248389Sneel if (vst->scope == VMM_STAT_SCOPE_INTEL && !vmm_is_intel()) 66248389Sneel return; 67248389Sneel 68248389Sneel if (vst->scope == VMM_STAT_SCOPE_AMD && !vmm_is_amd()) 69248389Sneel return; 70248389Sneel 71250427Sneel if (vst_num_elems + vst->nelems >= MAX_VMM_STAT_ELEMS) { 72299009Spfg printf("Cannot accommodate vmm stat type \"%s\"!\n", vst->desc); 73221828Sgrehan return; 74221828Sgrehan } 75221828Sgrehan 76250427Sneel vst->index = vst_num_elems; 77250427Sneel vst_num_elems += vst->nelems; 78250427Sneel 79250427Sneel vsttab[vst_num_types++] = vst; 80221828Sgrehan} 81221828Sgrehan 82221828Sgrehanint 83221828Sgrehanvmm_stat_copy(struct vm *vm, int vcpu, int *num_stats, uint64_t *buf) 84221828Sgrehan{ 85267884Sgrehan struct vmm_stat_type *vst; 86267884Sgrehan uint64_t *stats; 87221828Sgrehan int i; 88221828Sgrehan 89348271Srgrimes if (vcpu < 0 || vcpu >= vm_get_maxcpus(vm)) 90221828Sgrehan return (EINVAL); 91267884Sgrehan 92267884Sgrehan /* Let stats functions update their counters */ 93267884Sgrehan for (i = 0; i < vst_num_types; i++) { 94267884Sgrehan vst = vsttab[i]; 95267884Sgrehan if (vst->func != NULL) 96267884Sgrehan (*vst->func)(vm, vcpu, vst); 97267884Sgrehan } 98267884Sgrehan 99267884Sgrehan /* Copy over the stats */ 100221828Sgrehan stats = vcpu_stats(vm, vcpu); 101250427Sneel for (i = 0; i < vst_num_elems; i++) 102221828Sgrehan buf[i] = stats[i]; 103250427Sneel *num_stats = vst_num_elems; 104221828Sgrehan return (0); 105221828Sgrehan} 106221828Sgrehan 107221828Sgrehanvoid * 108221828Sgrehanvmm_stat_alloc(void) 109221828Sgrehan{ 110221828Sgrehan 111267216Sneel return (malloc(vst_size, M_VMM_STAT, M_WAITOK)); 112221828Sgrehan} 113221828Sgrehan 114221828Sgrehanvoid 115267216Sneelvmm_stat_init(void *vp) 116267216Sneel{ 117267216Sneel 118267216Sneel bzero(vp, vst_size); 119267216Sneel} 120267216Sneel 121267216Sneelvoid 122221828Sgrehanvmm_stat_free(void *vp) 123221828Sgrehan{ 124221828Sgrehan free(vp, M_VMM_STAT); 125221828Sgrehan} 126221828Sgrehan 127250427Sneelint 128250427Sneelvmm_stat_desc_copy(int index, char *buf, int bufsize) 129221828Sgrehan{ 130250427Sneel int i; 131250427Sneel struct vmm_stat_type *vst; 132221828Sgrehan 133250427Sneel for (i = 0; i < vst_num_types; i++) { 134250427Sneel vst = vsttab[i]; 135250427Sneel if (index >= vst->index && index < vst->index + vst->nelems) { 136250427Sneel if (vst->nelems > 1) { 137250427Sneel snprintf(buf, bufsize, "%s[%d]", 138250427Sneel vst->desc, index - vst->index); 139250427Sneel } else { 140250427Sneel strlcpy(buf, vst->desc, bufsize); 141250427Sneel } 142250427Sneel return (0); /* found it */ 143250427Sneel } 144250427Sneel } 145250427Sneel 146250427Sneel return (EINVAL); 147221828Sgrehan} 148248389Sneel 149248389Sneel/* global statistics */ 150248389SneelVMM_STAT(VCPU_MIGRATIONS, "vcpu migration across host cpus"); 151248389SneelVMM_STAT(VMEXIT_COUNT, "total number of vm exits"); 152248389SneelVMM_STAT(VMEXIT_EXTINT, "vm exits due to external interrupt"); 153248389SneelVMM_STAT(VMEXIT_HLT, "number of times hlt was intercepted"); 154248935SneelVMM_STAT(VMEXIT_CR_ACCESS, "number of times %cr access was intercepted"); 155248935SneelVMM_STAT(VMEXIT_RDMSR, "number of times rdmsr was intercepted"); 156248935SneelVMM_STAT(VMEXIT_WRMSR, "number of times wrmsr was intercepted"); 157248935SneelVMM_STAT(VMEXIT_MTRAP, "number of monitor trap exits"); 158248935SneelVMM_STAT(VMEXIT_PAUSE, "number of times pause was intercepted"); 159248935SneelVMM_STAT(VMEXIT_INTR_WINDOW, "vm exits due to interrupt window opening"); 160248935SneelVMM_STAT(VMEXIT_NMI_WINDOW, "vm exits due to nmi window opening"); 161248935SneelVMM_STAT(VMEXIT_INOUT, "number of times in/out was intercepted"); 162248935SneelVMM_STAT(VMEXIT_CPUID, "number of times cpuid was intercepted"); 163261621SneelVMM_STAT(VMEXIT_NESTED_FAULT, "vm exits due to nested page fault"); 164261621SneelVMM_STAT(VMEXIT_INST_EMUL, "vm exits for instruction emulation"); 165248935SneelVMM_STAT(VMEXIT_UNKNOWN, "number of vm exits for unknown reason"); 166248935SneelVMM_STAT(VMEXIT_ASTPENDING, "number of times astpending at exit"); 167283657SneelVMM_STAT(VMEXIT_REQIDLE, "number of times idle requested at exit"); 168248935SneelVMM_STAT(VMEXIT_USERSPACE, "number of vm exits handled in userspace"); 169260619SneelVMM_STAT(VMEXIT_RENDEZVOUS, "number of times rendezvous pending at exit"); 170261001SneelVMM_STAT(VMEXIT_EXCEPTION, "number of vm exits due to exceptions"); 171