1/* 2 * Copyright (c) 2013 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28 29 30/* Sample KPC data into kperf */ 31 32#include <mach/mach_types.h> 33#include <kern/thread.h> /* thread_* */ 34#include <kern/debug.h> /* panic */ 35// #include <sys/proc.h> 36 37#include <chud/chud_xnu.h> 38#include <kperf/kperf.h> 39 40#include <kperf/buffer.h> 41#include <kperf/context.h> 42 43#include <kperf/kperf_kpc.h> 44 45/* If we have kperf enabled, but not KPC */ 46#if KPC 47 48void 49kperf_kpc_cpu_sample( struct kpcdata *kpcd, int sample_config ) 50{ 51 kpcd->running = kpc_get_running(); 52 kpcd->counterc = kpc_get_cpu_counters(0, kpcd->running, 53 &kpcd->curcpu, kpcd->counterv); 54 if( !sample_config ) 55 kpcd->configc = 0; 56 else 57 { 58 kpcd->configc = kpc_get_config_count(kpcd->running); 59 kpc_get_config(kpcd->running, kpcd->configv); 60 } 61 62} 63 64void 65kperf_kpc_cpu_log( struct kpcdata *kpcd ) 66{ 67 unsigned i; 68 69 /* cut a config for instruments -- what's running and 70 * how many fixed counters there are 71 */ 72 BUF_DATA(PERF_KPC_CONFIG, 73 kpcd->running, 74 kpcd->counterc, 75 kpc_get_counter_count(KPC_CLASS_FIXED_MASK), 76 kpcd->configc); 77 78#if __LP64__ 79 /* config registers, if they were asked for */ 80 for (i = 0; i < ((kpcd->configc+3) / 4); i++) { 81 BUF_DATA( PERF_KPC_CFG_REG, 82 kpcd->configv[0 + i * 4], 83 kpcd->configv[1 + i * 4], 84 kpcd->configv[2 + i * 4], 85 kpcd->configv[3 + i * 4] ); 86 } 87 88 /* and the actual data -- 64-bit trace entries */ 89 for (i = 0; i < ((kpcd->counterc+3) / 4); i++) { 90 BUF_DATA( PERF_KPC_DATA, 91 kpcd->counterv[0 + i * 4], 92 kpcd->counterv[1 + i * 4], 93 kpcd->counterv[2 + i * 4], 94 kpcd->counterv[3 + i * 4] ); 95 } 96 97#else 98 /* config registers, if requested */ 99 for (i = 0; i < ((kpcd->configc+1) / 2); i++) { 100 BUF_DATA( PERF_KPC_CFG_REG32, 101 (kpcd->configv[0 + i * 2] >> 32ULL), 102 kpcd->configv[0 + i * 2] & 0xffffffffULL, 103 (kpcd->configv[1 + i * 2] >> 32ULL), 104 kpcd->configv[1 + i * 2] & 0xffffffffULL ); 105 } 106 107 /* and the actual data -- two counters per tracepoint */ 108 for (i = 0; i < ((kpcd->counterc+1) / 2); i++) { 109 BUF_DATA( PERF_KPC_DATA32, 110 (kpcd->counterv[0 + i * 2] >> 32ULL), 111 kpcd->counterv[0 + i * 2] & 0xffffffffULL, 112 (kpcd->counterv[1 + i * 2] >> 32ULL), 113 kpcd->counterv[1 + i * 2] & 0xffffffffULL ); 114 } 115#endif 116} 117 118#endif /* KPC */ 119