1/*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2005-2007, Joseph Koshy 5 * Copyright (c) 2007 The FreeBSD Foundation 6 * All rights reserved. 7 * 8 * Portions of this software were developed by A. Joseph Koshy under 9 * sponsorship from the FreeBSD Foundation and Google, Inc. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33#ifndef _SYS_PMCLOG_H_ 34#define _SYS_PMCLOG_H_ 35 36#include <sys/pmc.h> 37 38enum pmclog_type { 39 /* V1 ABI */ 40 PMCLOG_TYPE_CLOSELOG = 1, 41 PMCLOG_TYPE_DROPNOTIFY = 2, 42 PMCLOG_TYPE_INITIALIZE = 3, 43 44 PMCLOG_TYPE_PMCALLOCATE = 5, 45 PMCLOG_TYPE_PMCATTACH = 6, 46 PMCLOG_TYPE_PMCDETACH = 7, 47 PMCLOG_TYPE_PROCCSW = 8, 48 PMCLOG_TYPE_PROCEXEC = 9, 49 PMCLOG_TYPE_PROCEXIT = 10, 50 PMCLOG_TYPE_PROCFORK = 11, 51 PMCLOG_TYPE_SYSEXIT = 12, 52 PMCLOG_TYPE_USERDATA = 13, 53 /* 54 * V2 ABI 55 * 56 * The MAP_{IN,OUT} event types obsolete the MAPPING_CHANGE 57 * event type. The CALLCHAIN event type obsoletes the 58 * PCSAMPLE event type. 59 */ 60 PMCLOG_TYPE_MAP_IN = 14, 61 PMCLOG_TYPE_MAP_OUT = 15, 62 PMCLOG_TYPE_CALLCHAIN = 16, 63 /* 64 * V3 ABI 65 * 66 * New variant of PMCLOG_TYPE_PMCALLOCATE for dynamic event. 67 */ 68 PMCLOG_TYPE_PMCALLOCATEDYN = 17, 69 /* 70 * V6 ABI 71 */ 72 PMCLOG_TYPE_THR_CREATE = 18, 73 PMCLOG_TYPE_THR_EXIT = 19, 74 PMCLOG_TYPE_PROC_CREATE = 20 75}; 76 77/* 78 * A log entry descriptor comprises of a 32 bit header and a 64 bit 79 * time stamp followed by as many 32 bit words are required to record 80 * the event. 81 * 82 * Header field format: 83 * 84 * 31 24 16 0 85 * +------------+------------+-----------------------------------+ 86 * | MAGIC | TYPE | LENGTH | 87 * +------------+------------+-----------------------------------+ 88 * 89 * MAGIC is the constant PMCLOG_HEADER_MAGIC. 90 * TYPE contains a value of type enum pmclog_type. 91 * LENGTH contains the length of the event record, in bytes. 92 */ 93 94#define PMCLOG_ENTRY_HEADER \ 95 uint32_t pl_header; \ 96 uint32_t pl_spare; \ 97 uint64_t pl_tsc; \ 98 99struct pmclog_header { 100 PMCLOG_ENTRY_HEADER; 101}; 102 103/* 104 * The following structures are used to describe the size of each kind 105 * of log entry to sizeof(). To keep the compiler from adding 106 * padding, the fields of each structure are aligned to their natural 107 * boundaries, and the structures are marked as 'packed'. 108 * 109 * The actual reading and writing of the log file is always in terms 110 * of 4 byte quantities. 111 */ 112 113struct pmclog_callchain { 114 PMCLOG_ENTRY_HEADER 115 uint32_t pl_pid; 116 uint32_t pl_tid; 117 uint32_t pl_pmcid; 118 uint32_t pl_cpuflags; 119 /* 8 byte aligned */ 120 uintptr_t pl_pc[PMC_CALLCHAIN_DEPTH_MAX]; 121} __packed; 122 123#define PMC_CALLCHAIN_CPUFLAGS_TO_CPU(CF) (((CF) >> 16) & 0xFFFF) 124#define PMC_CALLCHAIN_CPUFLAGS_TO_USERMODE(CF) ((CF) & PMC_CC_F_USERSPACE) 125#define PMC_CALLCHAIN_TO_CPUFLAGS(CPU,FLAGS) \ 126 (((CPU) << 16) | ((FLAGS) & 0xFFFF)) 127 128struct pmclog_closelog { 129 PMCLOG_ENTRY_HEADER 130}; 131 132struct pmclog_dropnotify { 133 PMCLOG_ENTRY_HEADER 134}; 135 136struct pmclog_initialize { 137 PMCLOG_ENTRY_HEADER 138 uint32_t pl_version; /* driver version */ 139 uint32_t pl_cpu; /* enum pmc_cputype */ 140 uint64_t pl_tsc_freq; 141 struct timespec pl_ts; 142 char pl_cpuid[PMC_CPUID_LEN]; 143} __packed; 144 145struct pmclog_map_in { 146 PMCLOG_ENTRY_HEADER 147 uint32_t pl_pid; 148 uint32_t pl_pad; 149 uintfptr_t pl_start; /* 8 byte aligned */ 150 char pl_pathname[PATH_MAX]; 151} __packed; 152 153struct pmclog_map_out { 154 PMCLOG_ENTRY_HEADER 155 uint32_t pl_pid; 156 uint32_t pl_pad; 157 uintfptr_t pl_start; /* 8 byte aligned */ 158 uintfptr_t pl_end; 159} __packed; 160 161struct pmclog_pmcallocate { 162 PMCLOG_ENTRY_HEADER 163 uint32_t pl_pmcid; 164 uint32_t pl_event; 165 uint32_t pl_flags; 166 uint32_t pl_pad; 167 uint64_t pl_rate; 168} __packed; 169 170struct pmclog_pmcattach { 171 PMCLOG_ENTRY_HEADER 172 uint32_t pl_pmcid; 173 uint32_t pl_pid; 174 char pl_pathname[PATH_MAX]; 175} __packed; 176 177struct pmclog_pmcdetach { 178 PMCLOG_ENTRY_HEADER 179 uint32_t pl_pmcid; 180 uint32_t pl_pid; 181} __packed; 182 183struct pmclog_proccsw { 184 PMCLOG_ENTRY_HEADER 185 uint64_t pl_value; /* keep 8 byte aligned */ 186 uint32_t pl_pmcid; 187 uint32_t pl_pid; 188 uint32_t pl_tid; 189 uint32_t pl_pad; 190} __packed; 191 192struct pmclog_proccreate { 193 PMCLOG_ENTRY_HEADER 194 uint32_t pl_pid; 195 uint32_t pl_flags; 196 char pl_pcomm[MAXCOMLEN+1]; /* keep 8 byte aligned */ 197} __packed; 198 199struct pmclog_procexec { 200 PMCLOG_ENTRY_HEADER 201 uint32_t pl_pid; 202 uint32_t pl_pmcid; 203 /* keep 8 byte aligned */ 204 uintptr_t pl_base; /* AT_BASE */ 205 /* keep 8 byte aligned */ 206 uintptr_t pl_dyn; /* PIE load base */ 207 char pl_pathname[PATH_MAX]; 208} __packed; 209 210struct pmclog_procexit { 211 PMCLOG_ENTRY_HEADER 212 uint32_t pl_pmcid; 213 uint32_t pl_pid; 214 uint64_t pl_value; /* keep 8 byte aligned */ 215} __packed; 216 217struct pmclog_procfork { 218 PMCLOG_ENTRY_HEADER 219 uint32_t pl_oldpid; 220 uint32_t pl_newpid; 221} __packed; 222 223struct pmclog_sysexit { 224 PMCLOG_ENTRY_HEADER 225 uint32_t pl_pid; 226 uint32_t pl_pad; 227} __packed; 228 229struct pmclog_threadcreate { 230 PMCLOG_ENTRY_HEADER 231 uint32_t pl_tid; 232 uint32_t pl_pid; 233 uint32_t pl_flags; 234 uint32_t pl_pad; 235 char pl_tdname[MAXCOMLEN+1]; /* keep 8 byte aligned */ 236} __packed; 237 238struct pmclog_threadexit { 239 PMCLOG_ENTRY_HEADER 240 uint32_t pl_tid; 241 uint32_t pl_pad; 242} __packed; 243 244struct pmclog_userdata { 245 PMCLOG_ENTRY_HEADER 246 uint32_t pl_userdata; 247 uint32_t pl_pad; 248} __packed; 249 250struct pmclog_pmcallocatedyn { 251 PMCLOG_ENTRY_HEADER 252 uint32_t pl_pmcid; 253 uint32_t pl_event; 254 uint32_t pl_flags; 255 uint32_t pl_pad; 256 char pl_evname[PMC_NAME_MAX]; 257} __packed; 258 259union pmclog_entry { /* only used to size scratch areas */ 260 struct pmclog_callchain pl_cc; 261 struct pmclog_closelog pl_cl; 262 struct pmclog_dropnotify pl_dn; 263 struct pmclog_initialize pl_i; 264 struct pmclog_map_in pl_mi; 265 struct pmclog_map_out pl_mo; 266 struct pmclog_pmcallocate pl_a; 267 struct pmclog_pmcallocatedyn pl_ad; 268 struct pmclog_pmcattach pl_t; 269 struct pmclog_pmcdetach pl_d; 270 struct pmclog_proccsw pl_c; 271 struct pmclog_proccreate pl_pc; 272 struct pmclog_procexec pl_x; 273 struct pmclog_procexit pl_e; 274 struct pmclog_procfork pl_f; 275 struct pmclog_sysexit pl_se; 276 struct pmclog_threadcreate pl_tc; 277 struct pmclog_threadexit pl_te; 278 struct pmclog_userdata pl_u; 279}; 280 281#define PMCLOG_HEADER_MAGIC 0xEEU 282 283#define PMCLOG_HEADER_TO_LENGTH(H) \ 284 ((H) & 0x0000FFFF) 285#define PMCLOG_HEADER_TO_TYPE(H) \ 286 (((H) & 0x00FF0000) >> 16) 287#define PMCLOG_HEADER_TO_MAGIC(H) \ 288 (((H) & 0xFF000000) >> 24) 289#define PMCLOG_HEADER_CHECK_MAGIC(H) \ 290 (PMCLOG_HEADER_TO_MAGIC(H) == PMCLOG_HEADER_MAGIC) 291 292#ifdef _KERNEL 293 294/* 295 * Prototypes 296 */ 297int pmclog_configure_log(struct pmc_mdep *_md, struct pmc_owner *_po, 298 int _logfd); 299int pmclog_deconfigure_log(struct pmc_owner *_po); 300int pmclog_flush(struct pmc_owner *_po, int force); 301int pmclog_close(struct pmc_owner *_po); 302void pmclog_initialize(void); 303int pmclog_proc_create(struct thread *td, void **handlep); 304void pmclog_proc_ignite(void *handle, struct pmc_owner *po); 305void pmclog_process_callchain(struct pmc *_pm, struct pmc_sample *_ps); 306void pmclog_process_closelog(struct pmc_owner *po); 307void pmclog_process_dropnotify(struct pmc_owner *po); 308void pmclog_process_map_in(struct pmc_owner *po, pid_t pid, 309 uintfptr_t start, const char *path); 310void pmclog_process_map_out(struct pmc_owner *po, pid_t pid, 311 uintfptr_t start, uintfptr_t end); 312void pmclog_process_pmcallocate(struct pmc *_pm); 313void pmclog_process_pmcattach(struct pmc *_pm, pid_t _pid, char *_path); 314void pmclog_process_pmcdetach(struct pmc *_pm, pid_t _pid); 315void pmclog_process_proccsw(struct pmc *_pm, struct pmc_process *_pp, 316 pmc_value_t _v, struct thread *); 317void pmclog_process_procexec(struct pmc_owner *_po, pmc_id_t _pmid, pid_t _pid, 318 uintfptr_t _baseaddr, uintptr_t _dynaddr, char *_path); 319void pmclog_process_procexit(struct pmc *_pm, struct pmc_process *_pp); 320void pmclog_process_procfork(struct pmc_owner *_po, pid_t _oldpid, pid_t _newpid); 321void pmclog_process_sysexit(struct pmc_owner *_po, pid_t _pid); 322void pmclog_process_threadcreate(struct pmc_owner *_po, struct thread *td, int sync); 323void pmclog_process_threadexit(struct pmc_owner *_po, struct thread *td); 324void pmclog_process_proccreate(struct pmc_owner *_po, struct proc *p, int sync); 325int pmclog_process_userlog(struct pmc_owner *_po, 326 struct pmc_op_writelog *_wl); 327void pmclog_shutdown(void); 328#endif /* _KERNEL */ 329 330#endif /* _SYS_PMCLOG_H_ */ 331