1 /*- 2 * Copyright (c) 1996 Berkeley Software Design, Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 3. Berkeley Software Design Inc's name may not be used to endorse or 13 * promote products derived from this software without specific prior 14 * written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN INC ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL BERKELEY SOFTWARE DESIGN INC BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * from BSDI $Id: ktr.h,v 1.10.2.7 2000/03/16 21:44:42 cp Exp $ 29 * $FreeBSD$ 30 */ 31 32 /* 33 * Wraparound kernel trace buffer support. 34 */ 35 36 #ifndef _SYS_KTR_H_ 37 #define _SYS_KTR_H_ 38 39 /* 40 * Trace classes 41 * 42 * Two of the trace classes (KTR_DEV and KTR_SUBSYS) are special in that 43 * they are really placeholders so that indvidual drivers and subsystems 44 * can map their internal tracing to the general class when they wish to 45 * have tracing enabled and map it to 0 when they don't. 46 */ 47 #define KTR_GEN 0x00000001 /* General (TR) */ 48 #define KTR_NET 0x00000002 /* Network */ 49 #define KTR_DEV 0x00000004 /* Device driver */ 50 #define KTR_LOCK 0x00000008 /* MP locking */ 51 #define KTR_SMP 0x00000010 /* MP general */ 52 #define KTR_SUBSYS 0x00000020 /* Subsystem. */ 53 #define KTR_PMAP 0x00000040 /* Pmap tracing */ 54 #define KTR_MALLOC 0x00000080 /* Malloc tracing */ 55 #define KTR_TRAP 0x00000100 /* Trap processing */ 56 #define KTR_INTR 0x00000200 /* Interrupt tracing */ 57 #define KTR_SIG 0x00000400 /* Signal processing */ 58 #define KTR_SPARE2 0x00000800 /* XXX Used by cxgb */ 59 #define KTR_PROC 0x00001000 /* Process scheduling */ 60 #define KTR_SYSC 0x00002000 /* System call */ 61 #define KTR_INIT 0x00004000 /* System initialization */ 62 #define KTR_SPARE3 0x00008000 /* XXX Used by cxgb */ 63 #define KTR_SPARE4 0x00010000 /* XXX Used by cxgb */ 64 #define KTR_EVH 0x00020000 /* Eventhandler */ 65 #define KTR_VFS 0x00040000 /* VFS events */ 66 #define KTR_VOP 0x00080000 /* Auto-generated vop events */ 67 #define KTR_VM 0x00100000 /* The virtual memory system */ 68 #define KTR_INET 0x00200000 /* IPv4 stack */ 69 #define KTR_RUNQ 0x00400000 /* Run queue */ 70 #define KTR_CONTENTION 0x00800000 /* Lock contention */ 71 #define KTR_UMA 0x01000000 /* UMA slab allocator */ 72 #define KTR_CALLOUT 0x02000000 /* Callouts and timeouts */ 73 #define KTR_GEOM 0x04000000 /* GEOM I/O events */ 74 #define KTR_BUSDMA 0x08000000 /* busdma(9) events */ 75 #define KTR_INET6 0x10000000 /* IPv6 stack */ 76 #define KTR_SCHED 0x20000000 /* Machine parsed sched info. */ 77 #define KTR_BUF 0x40000000 /* Buffer cache */ 78 #define KTR_ALL 0x7fffffff 79 80 /* Trace classes to compile in */ 81 #ifdef KTR 82 #ifndef KTR_COMPILE 83 #define KTR_COMPILE (KTR_ALL) 84 #endif 85 #else /* !KTR */ 86 #undef KTR_COMPILE 87 #define KTR_COMPILE 0 88 #endif /* KTR */ 89 90 /* 91 * Version number for ktr_entry struct. Increment this when you break binary 92 * compatibility. 93 */ 94 #define KTR_VERSION 2 95 96 #define KTR_PARMS 6 97 98 #ifndef LOCORE 99 100 #include <sys/param.h> 101 #include <sys/_cpuset.h> 102 103 struct ktr_entry { 104 u_int64_t ktr_timestamp; 105 int ktr_cpu; 106 int ktr_line; 107 const char *ktr_file; 108 const char *ktr_desc; 109 struct thread *ktr_thread; 110 u_long ktr_parms[KTR_PARMS]; 111 }; 112 113 extern cpuset_t ktr_cpumask; 114 extern int ktr_mask; 115 extern int ktr_entries; 116 extern int ktr_verbose; 117 118 extern volatile int ktr_idx; 119 extern struct ktr_entry *ktr_buf; 120 121 #ifdef KTR 122 123 void ktr_tracepoint(u_int mask, const char *file, int line, 124 const char *format, u_long arg1, u_long arg2, u_long arg3, 125 u_long arg4, u_long arg5, u_long arg6); 126 127 #define CTR6(m, format, p1, p2, p3, p4, p5, p6) do { \ 128 if (KTR_COMPILE & (m)) \ 129 ktr_tracepoint((m), __FILE__, __LINE__, format, \ 130 (u_long)(p1), (u_long)(p2), (u_long)(p3), \ 131 (u_long)(p4), (u_long)(p5), (u_long)(p6)); \ 132 } while(0) 133 #define CTR0(m, format) CTR6(m, format, 0, 0, 0, 0, 0, 0) 134 #define CTR1(m, format, p1) CTR6(m, format, p1, 0, 0, 0, 0, 0) 135 #define CTR2(m, format, p1, p2) CTR6(m, format, p1, p2, 0, 0, 0, 0) 136 #define CTR3(m, format, p1, p2, p3) CTR6(m, format, p1, p2, p3, 0, 0, 0) 137 #define CTR4(m, format, p1, p2, p3, p4) CTR6(m, format, p1, p2, p3, p4, 0, 0) 138 #define CTR5(m, format, p1, p2, p3, p4, p5) CTR6(m, format, p1, p2, p3, p4, p5, 0) 139 #else /* KTR */ 140 #define CTR0(m, d) (void)0 141 #define CTR1(m, d, p1) (void)0 142 #define CTR2(m, d, p1, p2) (void)0 143 #define CTR3(m, d, p1, p2, p3) (void)0 144 #define CTR4(m, d, p1, p2, p3, p4) (void)0 145 #define CTR5(m, d, p1, p2, p3, p4, p5) (void)0 146 #define CTR6(m, d, p1, p2, p3, p4, p5, p6) (void)0 147 #endif /* KTR */ 148 149 #define TR0(d) CTR0(KTR_GEN, d) 150 #define TR1(d, p1) CTR1(KTR_GEN, d, p1) 151 #define TR2(d, p1, p2) CTR2(KTR_GEN, d, p1, p2) 152 #define TR3(d, p1, p2, p3) CTR3(KTR_GEN, d, p1, p2, p3) 153 #define TR4(d, p1, p2, p3, p4) CTR4(KTR_GEN, d, p1, p2, p3, p4) 154 #define TR5(d, p1, p2, p3, p4, p5) CTR5(KTR_GEN, d, p1, p2, p3, p4, p5) 155 #define TR6(d, p1, p2, p3, p4, p5, p6) CTR6(KTR_GEN, d, p1, p2, p3, p4, p5, p6) 156 157 /* 158 * The event macros implement KTR graphic plotting facilities provided 159 * by src/tools/sched/schedgraph.py. Three generic types of events are 160 * supported: states, counters, and points. 161 * 162 * m is the ktr class for ktr_mask. 163 * ident is the string identifier that owns the event (ie: "thread 10001") 164 * etype is the type of event to plot (state, counter, point) 165 * edat is the event specific data (state name, counter value, point name) 166 * up to four attributes may be supplied as a name, value pair of arguments. 167 * 168 * etype and attribute names must be string constants. This minimizes the 169 * number of ktr slots required by construction the final format strings 170 * at compile time. Both must also include a colon and format specifier 171 * (ie. "prio:%d", prio). It is recommended that string arguments be 172 * contained within escaped quotes if they may contain ',' or ':' characters. 173 * 174 * The special attribute (KTR_ATTR_LINKED, ident) creates a reference to another 175 * id on the graph for easy traversal of related graph elements. 176 */ 177 178 #define KTR_ATTR_LINKED "linkedto:\"%s\"" 179 #define KTR_EFMT(egroup, ident, etype) \ 180 "KTRGRAPH group:\"" egroup "\", id:\"%s\", " etype ", attributes: " 181 182 #define KTR_EVENT0(m, egroup, ident, etype, edat) \ 183 CTR2(m, KTR_EFMT(egroup, ident, etype) "none", ident, edat) 184 #define KTR_EVENT1(m, egroup, ident, etype, edat, a0, v0) \ 185 CTR3(m, KTR_EFMT(egroup, ident, etype) a0, ident, edat, (v0)) 186 #define KTR_EVENT2(m, egroup, ident, etype, edat, a0, v0, a1, v1) \ 187 CTR4(m, KTR_EFMT(egroup, ident, etype) a0 ", " a1, \ 188 ident, edat, (v0), (v1)) 189 #define KTR_EVENT3(m, egroup, ident, etype, edat, a0, v0, a1, v1, a2, v2)\ 190 CTR5(m,KTR_EFMT(egroup, ident, etype) a0 ", " a1 ", " a2, \ 191 ident, edat, (v0), (v1), (v2)) 192 #define KTR_EVENT4(m, egroup, ident, etype, edat, \ 193 a0, v0, a1, v1, a2, v2, a3, v3) \ 194 CTR6(m,KTR_EFMT(egroup, ident, etype) a0 ", " a1 ", " a2 ", " a3,\ 195 ident, edat, (v0), (v1), (v2), (v3)) 196 197 /* 198 * State functions graph state changes on an ident. 199 */ 200 #define KTR_STATE0(m, egroup, ident, state) \ 201 KTR_EVENT0(m, egroup, ident, "state:\"%s\"", state) 202 #define KTR_STATE1(m, egroup, ident, state, a0, v0) \ 203 KTR_EVENT1(m, egroup, ident, "state:\"%s\"", state, a0, (v0)) 204 #define KTR_STATE2(m, egroup, ident, state, a0, v0, a1, v1) \ 205 KTR_EVENT2(m, egroup, ident, "state:\"%s\"", state, a0, (v0), a1, (v1)) 206 #define KTR_STATE3(m, egroup, ident, state, a0, v0, a1, v1, a2, v2) \ 207 KTR_EVENT3(m, egroup, ident, "state:\"%s\"", \ 208 state, a0, (v0), a1, (v1), a2, (v2)) 209 #define KTR_STATE4(m, egroup, ident, state, a0, v0, a1, v1, a2, v2, a3, v3)\ 210 KTR_EVENT4(m, egroup, ident, "state:\"%s\"", \ 211 state, a0, (v0), a1, (v1), a2, (v2), a3, (v3)) 212 213 /* 214 * Counter functions graph counter values. The counter id 215 * must not be intermixed with a state id. 216 */ 217 #define KTR_COUNTER0(m, egroup, ident, counter) \ 218 KTR_EVENT0(m, egroup, ident, "counter:%d", counter) 219 #define KTR_COUNTER1(m, egroup, ident, edat, a0, v0) \ 220 KTR_EVENT1(m, egroup, ident, "counter:%d", counter, a0, (v0)) 221 #define KTR_COUNTER2(m, egroup, ident, counter, a0, v0, a1, v1) \ 222 KTR_EVENT2(m, egroup, ident, "counter:%d", counter, a0, (v0), a1, (v1)) 223 #define KTR_COUNTER3(m, egroup, ident, counter, a0, v0, a1, v1, a2, v2) \ 224 KTR_EVENT3(m, egroup, ident, "counter:%d", \ 225 counter, a0, (v0), a1, (v1), a2, (v2)) 226 #define KTR_COUNTER4(m, egroup, ident, counter, a0, v0, a1, v1, a2, v2, a3, v3)\ 227 KTR_EVENT4(m, egroup, ident, "counter:%d", \ 228 counter, a0, (v0), a1, (v1), a2, (v2), a3, (v3)) 229 230 /* 231 * Point functions plot points of interest on counter or state graphs. 232 */ 233 #define KTR_POINT0(m, egroup, ident, point) \ 234 KTR_EVENT0(m, egroup, ident, "point:\"%s\"", point) 235 #define KTR_POINT1(m, egroup, ident, point, a0, v0) \ 236 KTR_EVENT1(m, egroup, ident, "point:\"%s\"", point, a0, (v0)) 237 #define KTR_POINT2(m, egroup, ident, point, a0, v0, a1, v1) \ 238 KTR_EVENT2(m, egroup, ident, "point:\"%s\"", point, a0, (v0), a1, (v1)) 239 #define KTR_POINT3(m, egroup, ident, point, a0, v0, a1, v1, a2, v2) \ 240 KTR_EVENT3(m, egroup, ident, "point:\"%s\"", point, \ 241 a0, (v0), a1, (v1), a2, (v2)) 242 #define KTR_POINT4(m, egroup, ident, point, a0, v0, a1, v1, a2, v2, a3, v3)\ 243 KTR_EVENT4(m, egroup, ident, "point:\"%s\"", \ 244 point, a0, (v0), a1, (v1), a2, (v2), a3, (v3)) 245 246 /* 247 * Start functions denote the start of a region of code or operation 248 * and should be paired with stop functions for timing of nested 249 * sequences. 250 * 251 * Specifying extra attributes with the name "key" will result in 252 * multi-part keys. For example a block device and offset pair 253 * might be used to describe a buf undergoing I/O. 254 */ 255 #define KTR_START0(m, egroup, ident, key) \ 256 KTR_EVENT0(m, egroup, ident, "start:0x%jX", (uintmax_t)key) 257 #define KTR_START1(m, egroup, ident, key, a0, v0) \ 258 KTR_EVENT1(m, egroup, ident, "start:0x%jX", (uintmax_t)key, a0, (v0)) 259 #define KTR_START2(m, egroup, ident, key, a0, v0, a1, v1) \ 260 KTR_EVENT2(m, egroup, ident, "start:0x%jX", (uintmax_t)key, \ 261 a0, (v0), a1, (v1)) 262 #define KTR_START3(m, egroup, ident, key, a0, v0, a1, v1, a2, v2)\ 263 KTR_EVENT3(m, egroup, ident, "start:0x%jX", (uintmax_t)key, \ 264 a0, (v0), a1, (v1), a2, (v2)) 265 #define KTR_START4(m, egroup, ident, key, \ 266 a0, v0, a1, v1, a2, v2, a3, v3) \ 267 KTR_EVENT4(m, egroup, ident, "start:0x%jX", (uintmax_t)key, \ 268 a0, (v0), a1, (v1), a2, (v2), a3, (v3)) 269 270 /* 271 * Stop functions denote the end of a region of code or operation 272 * and should be paired with start functions for timing of nested 273 * sequences. 274 */ 275 #define KTR_STOP0(m, egroup, ident, key) \ 276 KTR_EVENT0(m, egroup, ident, "stop:0x%jX", (uintmax_t)key) 277 #define KTR_STOP1(m, egroup, ident, key, a0, v0) \ 278 KTR_EVENT1(m, egroup, ident, "stop:0x%jX", (uintmax_t)key, a0, (v0)) 279 #define KTR_STOP2(m, egroup, ident, key, a0, v0, a1, v1) \ 280 KTR_EVENT2(m, egroup, ident, "stop:0x%jX", (uintmax_t)key, \ 281 a0, (v0), a1, (v1)) 282 #define KTR_STOP3(m, egroup, ident, key, a0, v0, a1, v1, a2, v2)\ 283 KTR_EVENT3(m, egroup, ident, "stop:0x%jX", (uintmax_t)key, \ 284 a0, (v0), a1, (v1), a2, (v2)) 285 #define KTR_STOP4(m, egroup, ident, \ 286 key, a0, v0, a1, v1, a2, v2, a3, v3) \ 287 KTR_EVENT4(m, egroup, ident, "stop:0x%jX", (uintmax_t)key, \ 288 a0, (v0), a1, (v1), a2, (v2), a3, (v3)) 289 290 /* 291 * Trace initialization events, similar to CTR with KTR_INIT, but 292 * completely ifdef'ed out if KTR_INIT isn't in KTR_COMPILE (to 293 * save string space, the compiler doesn't optimize out strings 294 * for the conditional ones above). 295 */ 296 #if (KTR_COMPILE & KTR_INIT) != 0 297 #define ITR0(d) CTR0(KTR_INIT, d) 298 #define ITR1(d, p1) CTR1(KTR_INIT, d, p1) 299 #define ITR2(d, p1, p2) CTR2(KTR_INIT, d, p1, p2) 300 #define ITR3(d, p1, p2, p3) CTR3(KTR_INIT, d, p1, p2, p3) 301 #define ITR4(d, p1, p2, p3, p4) CTR4(KTR_INIT, d, p1, p2, p3, p4) 302 #define ITR5(d, p1, p2, p3, p4, p5) CTR5(KTR_INIT, d, p1, p2, p3, p4, p5) 303 #define ITR6(d, p1, p2, p3, p4, p5, p6) CTR6(KTR_INIT, d, p1, p2, p3, p4, p5, p6) 304 #else 305 #define ITR0(d) 306 #define ITR1(d, p1) 307 #define ITR2(d, p1, p2) 308 #define ITR3(d, p1, p2, p3) 309 #define ITR4(d, p1, p2, p3, p4) 310 #define ITR5(d, p1, p2, p3, p4, p5) 311 #define ITR6(d, p1, p2, p3, p4, p5, p6) 312 #endif 313 314 #endif /* !LOCORE */ 315 316 #endif /* !_SYS_KTR_H_ */ 317