vmm_stat.c revision 267216
1194246Smarius/*- 2194246Smarius * Copyright (c) 2011 NetApp, Inc. 3194246Smarius * All rights reserved. 4194246Smarius * 5194246Smarius * Redistribution and use in source and binary forms, with or without 6194246Smarius * modification, are permitted provided that the following conditions 7194246Smarius * are met: 8194246Smarius * 1. Redistributions of source code must retain the above copyright 9194246Smarius * notice, this list of conditions and the following disclaimer. 10194246Smarius * 2. Redistributions in binary form must reproduce the above copyright 11194246Smarius * notice, this list of conditions and the following disclaimer in the 12194246Smarius * documentation and/or other materials provided with the distribution. 13194246Smarius * 14194246Smarius * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND 15194246Smarius * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16194246Smarius * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17194246Smarius * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE 18194246Smarius * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19194246Smarius * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20194246Smarius * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21194246Smarius * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22194246Smarius * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23194246Smarius * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24194246Smarius * SUCH DAMAGE. 25194246Smarius * 26194246Smarius * $FreeBSD: head/sys/amd64/vmm/vmm_stat.c 267216 2014-06-07 21:36:52Z neel $ 27194246Smarius */ 28194246Smarius 29194246Smarius#include <sys/cdefs.h> 30194246Smarius__FBSDID("$FreeBSD: head/sys/amd64/vmm/vmm_stat.c 267216 2014-06-07 21:36:52Z neel $"); 31194246Smarius 32194246Smarius#include <sys/param.h> 33194246Smarius#include <sys/kernel.h> 34194246Smarius#include <sys/systm.h> 35194246Smarius#include <sys/malloc.h> 36194246Smarius#include <sys/smp.h> 37194246Smarius 38194246Smarius#include <machine/vmm.h> 39194246Smarius#include "vmm_util.h" 40194246Smarius#include "vmm_stat.h" 41194246Smarius 42194246Smarius/* 43194246Smarius * 'vst_num_elems' is the total number of addressable statistic elements 44194246Smarius * 'vst_num_types' is the number of unique statistic types 45194246Smarius * 46194246Smarius * It is always true that 'vst_num_elems' is greater than or equal to 47194246Smarius * 'vst_num_types'. This is because a stat type may represent more than 48194246Smarius * one element (for e.g. VMM_STAT_ARRAY). 49194246Smarius */ 50194246Smariusstatic int vst_num_elems, vst_num_types; 51194246Smariusstatic struct vmm_stat_type *vsttab[MAX_VMM_STAT_ELEMS]; 52194246Smarius 53194246Smariusstatic MALLOC_DEFINE(M_VMM_STAT, "vmm stat", "vmm stat"); 54194246Smarius 55194246Smarius#define vst_size ((size_t)vst_num_elems * sizeof(uint64_t)) 56194246Smarius 57194246Smariusvoid 58194246Smariusvmm_stat_register(void *arg) 59249583Sgabor{ 60194246Smarius struct vmm_stat_type *vst = arg; 61194246Smarius 62194246Smarius /* We require all stats to identify themselves with a description */ 63194246Smarius if (vst->desc == NULL) 64194246Smarius return; 65194246Smarius 66194246Smarius if (vst->scope == VMM_STAT_SCOPE_INTEL && !vmm_is_intel()) 67194246Smarius return; 68194246Smarius 69194246Smarius if (vst->scope == VMM_STAT_SCOPE_AMD && !vmm_is_amd()) 70194246Smarius return; 71194246Smarius 72194246Smarius if (vst_num_elems + vst->nelems >= MAX_VMM_STAT_ELEMS) { 73194246Smarius printf("Cannot accomodate vmm stat type \"%s\"!\n", vst->desc); 74194246Smarius return; 75194246Smarius } 76194246Smarius 77194246Smarius vst->index = vst_num_elems; 78194246Smarius vst_num_elems += vst->nelems; 79194246Smarius 80194246Smarius vsttab[vst_num_types++] = vst; 81194246Smarius} 82194246Smarius 83194246Smariusint 84194246Smariusvmm_stat_copy(struct vm *vm, int vcpu, int *num_stats, uint64_t *buf) 85194246Smarius{ 86194246Smarius int i; 87194246Smarius uint64_t *stats; 88194246Smarius 89194246Smarius if (vcpu < 0 || vcpu >= VM_MAXCPU) 90194246Smarius return (EINVAL); 91194246Smarius 92194246Smarius stats = vcpu_stats(vm, vcpu); 93194246Smarius for (i = 0; i < vst_num_elems; i++) 94194246Smarius buf[i] = stats[i]; 95194246Smarius *num_stats = vst_num_elems; 96194246Smarius return (0); 97194246Smarius} 98194246Smarius 99194246Smariusvoid * 100194246Smariusvmm_stat_alloc(void) 101194246Smarius{ 102194246Smarius 103194246Smarius return (malloc(vst_size, M_VMM_STAT, M_WAITOK)); 104194246Smarius} 105194246Smarius 106194246Smariusvoid 107194246Smariusvmm_stat_init(void *vp) 108194246Smarius{ 109194246Smarius 110194246Smarius bzero(vp, vst_size); 111194246Smarius} 112194246Smarius 113194246Smariusvoid 114194246Smariusvmm_stat_free(void *vp) 115194246Smarius{ 116194246Smarius free(vp, M_VMM_STAT); 117194246Smarius} 118194246Smarius 119194246Smariusint 120194246Smariusvmm_stat_desc_copy(int index, char *buf, int bufsize) 121194246Smarius{ 122194246Smarius int i; 123194246Smarius struct vmm_stat_type *vst; 124194246Smarius 125194246Smarius for (i = 0; i < vst_num_types; i++) { 126194246Smarius vst = vsttab[i]; 127194246Smarius if (index >= vst->index && index < vst->index + vst->nelems) { 128194246Smarius if (vst->nelems > 1) { 129194246Smarius snprintf(buf, bufsize, "%s[%d]", 130194246Smarius vst->desc, index - vst->index); 131194246Smarius } else { 132194246Smarius strlcpy(buf, vst->desc, bufsize); 133194246Smarius } 134194246Smarius return (0); /* found it */ 135194246Smarius } 136194246Smarius } 137194246Smarius 138194246Smarius return (EINVAL); 139194246Smarius} 140194246Smarius 141194904Smarius/* global statistics */ 142194904SmariusVMM_STAT(VCPU_MIGRATIONS, "vcpu migration across host cpus"); 143194904SmariusVMM_STAT(VMEXIT_COUNT, "total number of vm exits"); 144194246SmariusVMM_STAT(VMEXIT_EXTINT, "vm exits due to external interrupt"); 145194246SmariusVMM_STAT(VMEXIT_HLT, "number of times hlt was intercepted"); 146194246SmariusVMM_STAT(VMEXIT_CR_ACCESS, "number of times %cr access was intercepted"); 147194246SmariusVMM_STAT(VMEXIT_RDMSR, "number of times rdmsr was intercepted"); 148194246SmariusVMM_STAT(VMEXIT_WRMSR, "number of times wrmsr was intercepted"); 149194246SmariusVMM_STAT(VMEXIT_MTRAP, "number of monitor trap exits"); 150194246SmariusVMM_STAT(VMEXIT_PAUSE, "number of times pause was intercepted"); 151194246SmariusVMM_STAT(VMEXIT_INTR_WINDOW, "vm exits due to interrupt window opening"); 152194246SmariusVMM_STAT(VMEXIT_NMI_WINDOW, "vm exits due to nmi window opening"); 153194246SmariusVMM_STAT(VMEXIT_INOUT, "number of times in/out was intercepted"); 154194246SmariusVMM_STAT(VMEXIT_CPUID, "number of times cpuid was intercepted"); 155194246SmariusVMM_STAT(VMEXIT_NESTED_FAULT, "vm exits due to nested page fault"); 156194246SmariusVMM_STAT(VMEXIT_INST_EMUL, "vm exits for instruction emulation"); 157194246SmariusVMM_STAT(VMEXIT_UNKNOWN, "number of vm exits for unknown reason"); 158194246SmariusVMM_STAT(VMEXIT_ASTPENDING, "number of times astpending at exit"); 159194246SmariusVMM_STAT(VMEXIT_USERSPACE, "number of vm exits handled in userspace"); 160194246SmariusVMM_STAT(VMEXIT_RENDEZVOUS, "number of times rendezvous pending at exit"); 161194246SmariusVMM_STAT(VMEXIT_EXCEPTION, "number of vm exits due to exceptions"); 162194246Smarius