ktr.h revision 210334
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: head/sys/sys/ktr.h 210334 2010-07-21 10:05:07Z attilio $ 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 100struct ktr_entry { 101 u_int64_t ktr_timestamp; 102 int ktr_cpu; 103 int ktr_line; 104 const char *ktr_file; 105 const char *ktr_desc; 106 struct thread *ktr_thread; 107 u_long ktr_parms[KTR_PARMS]; 108}; 109 110extern int ktr_cpumask; 111extern int ktr_mask; 112extern int ktr_entries; 113extern int ktr_verbose; 114 115extern volatile int ktr_idx; 116extern struct ktr_entry ktr_buf[]; 117 118#ifdef KTR 119 120void ktr_tracepoint(u_int mask, const char *file, int line, 121 const char *format, u_long arg1, u_long arg2, u_long arg3, 122 u_long arg4, u_long arg5, u_long arg6); 123 124#define CTR6(m, format, p1, p2, p3, p4, p5, p6) do { \ 125 if (KTR_COMPILE & (m)) \ 126 ktr_tracepoint((m), __FILE__, __LINE__, format, \ 127 (u_long)(p1), (u_long)(p2), (u_long)(p3), \ 128 (u_long)(p4), (u_long)(p5), (u_long)(p6)); \ 129 } while(0) 130#define CTR0(m, format) CTR6(m, format, 0, 0, 0, 0, 0, 0) 131#define CTR1(m, format, p1) CTR6(m, format, p1, 0, 0, 0, 0, 0) 132#define CTR2(m, format, p1, p2) CTR6(m, format, p1, p2, 0, 0, 0, 0) 133#define CTR3(m, format, p1, p2, p3) CTR6(m, format, p1, p2, p3, 0, 0, 0) 134#define CTR4(m, format, p1, p2, p3, p4) CTR6(m, format, p1, p2, p3, p4, 0, 0) 135#define CTR5(m, format, p1, p2, p3, p4, p5) CTR6(m, format, p1, p2, p3, p4, p5, 0) 136#else /* KTR */ 137#define CTR0(m, d) (void)0 138#define CTR1(m, d, p1) (void)0 139#define CTR2(m, d, p1, p2) (void)0 140#define CTR3(m, d, p1, p2, p3) (void)0 141#define CTR4(m, d, p1, p2, p3, p4) (void)0 142#define CTR5(m, d, p1, p2, p3, p4, p5) (void)0 143#define CTR6(m, d, p1, p2, p3, p4, p5, p6) (void)0 144#endif /* KTR */ 145 146#define TR0(d) CTR0(KTR_GEN, d) 147#define TR1(d, p1) CTR1(KTR_GEN, d, p1) 148#define TR2(d, p1, p2) CTR2(KTR_GEN, d, p1, p2) 149#define TR3(d, p1, p2, p3) CTR3(KTR_GEN, d, p1, p2, p3) 150#define TR4(d, p1, p2, p3, p4) CTR4(KTR_GEN, d, p1, p2, p3, p4) 151#define TR5(d, p1, p2, p3, p4, p5) CTR5(KTR_GEN, d, p1, p2, p3, p4, p5) 152#define TR6(d, p1, p2, p3, p4, p5, p6) CTR6(KTR_GEN, d, p1, p2, p3, p4, p5, p6) 153 154/* 155 * The event macros implement KTR graphic plotting facilities provided 156 * by src/tools/sched/schedgraph.py. Three generic types of events are 157 * supported: states, counters, and points. 158 * 159 * m is the ktr class for ktr_mask. 160 * ident is the string identifier that owns the event (ie: "thread 10001") 161 * etype is the type of event to plot (state, counter, point) 162 * edat is the event specific data (state name, counter value, point name) 163 * up to four attributes may be supplied as a name, value pair of arguments. 164 * 165 * etype and attribute names must be string constants. This minimizes the 166 * number of ktr slots required by construction the final format strings 167 * at compile time. Both must also include a colon and format specifier 168 * (ie. "prio:%d", prio). It is recommended that string arguments be 169 * contained within escaped quotes if they may contain ',' or ':' characters. 170 * 171 * The special attribute (KTR_ATTR_LINKED, ident) creates a reference to another 172 * id on the graph for easy traversal of related graph elements. 173 */ 174 175#define KTR_ATTR_LINKED "linkedto:\"%s\"" 176#define KTR_EFMT(egroup, ident, etype) \ 177 "KTRGRAPH group:\"" egroup "\", id:\"%s\", " etype ", attributes: " 178 179#define KTR_EVENT0(m, egroup, ident, etype, edat) \ 180 CTR2(m, KTR_EFMT(egroup, ident, etype) "none", ident, edat) 181#define KTR_EVENT1(m, egroup, ident, etype, edat, a0, v0) \ 182 CTR3(m, KTR_EFMT(egroup, ident, etype) a0, ident, edat, (v0)) 183#define KTR_EVENT2(m, egroup, ident, etype, edat, a0, v0, a1, v1) \ 184 CTR4(m, KTR_EFMT(egroup, ident, etype) a0 ", " a1, \ 185 ident, edat, (v0), (v1)) 186#define KTR_EVENT3(m, egroup, ident, etype, edat, a0, v0, a1, v1, a2, v2)\ 187 CTR5(m,KTR_EFMT(egroup, ident, etype) a0 ", " a1 ", " a2, \ 188 ident, edat, (v0), (v1), (v2)) 189#define KTR_EVENT4(m, egroup, ident, etype, edat, \ 190 a0, v0, a1, v1, a2, v2, a3, v3) \ 191 CTR6(m,KTR_EFMT(egroup, ident, etype) a0 ", " a1 ", " a2, ", ", a3,\ 192 ident, edat, (v0), (v1), (v2), (v3)) 193 194/* 195 * State functions graph state changes on an ident. 196 */ 197#define KTR_STATE0(m, egroup, ident, state) \ 198 KTR_EVENT0(m, egroup, ident, "state:\"%s\"", state) 199#define KTR_STATE1(m, egroup, ident, state, a0, v0) \ 200 KTR_EVENT1(m, egroup, ident, "state:\"%s\"", state, a0, (v0)) 201#define KTR_STATE2(m, egroup, ident, state, a0, v0, a1, v1) \ 202 KTR_EVENT2(m, egroup, ident, "state:\"%s\"", state, a0, (v0), a1, (v1)) 203#define KTR_STATE3(m, egroup, ident, state, a0, v0, a1, v1, a2, v2) \ 204 KTR_EVENT3(m, egroup, ident, "state:\"%s\"", \ 205 state, a0, (v0), a1, (v1), a2, (v2)) 206#define KTR_STATE4(m, egroup, ident, state, a0, v0, a1, v1, a2, v2, a3, v3)\ 207 KTR_EVENT4(m, egroup, ident, "state:\"%s\"", \ 208 state, a0, (v0), a1, (v1), a2, (v2), a3, (v3)) 209 210/* 211 * Counter functions graph counter values. The counter id 212 * must not be intermixed with a state id. 213 */ 214#define KTR_COUNTER0(m, egroup, ident, counter) \ 215 KTR_EVENT0(m, egroup, ident, "counter:%d", counter) 216#define KTR_COUNTER1(m, egroup, ident, edat, a0, v0) \ 217 KTR_EVENT1(m, egroup, ident, "counter:%d", counter, a0, (v0)) 218#define KTR_COUNTER2(m, egroup, ident, counter, a0, v0, a1, v1) \ 219 KTR_EVENT2(m, egroup, ident, "counter:%d", counter, a0, (v0), a1, (v1)) 220#define KTR_COUNTER3(m, egroup, ident, counter, a0, v0, a1, v1, a2, v2) \ 221 KTR_EVENT3(m, egroup, ident, "counter:%d", \ 222 counter, a0, (v0), a1, (v1), a2, (v2)) 223#define KTR_COUNTER4(m, egroup, ident, counter, a0, v0, a1, v1, a2, v2, a3, v3)\ 224 KTR_EVENT4(m, egroup, ident, "counter:%d", \ 225 counter, a0, (v0), a1, (v1), a2, (v2), a3, (v3)) 226 227/* 228 * Point functions plot points of interest on counter or state graphs. 229 */ 230#define KTR_POINT0(m, egroup, ident, point) \ 231 KTR_EVENT0(m, egroup, ident, "point:\"%s\"", point) 232#define KTR_POINT1(m, egroup, ident, point, a0, v0) \ 233 KTR_EVENT1(m, egroup, ident, "point:\"%s\"", point, a0, (v0)) 234#define KTR_POINT2(m, egroup, ident, point, a0, v0, a1, v1) \ 235 KTR_EVENT2(m, egroup, ident, "point:\"%s\"", point, a0, (v0), a1, (v1)) 236#define KTR_POINT3(m, egroup, ident, point, a0, v0, a1, v1, a2, v2) \ 237 KTR_EVENT3(m, egroup, ident, "point:\"%s\"", point, \ 238 a0, (v0), a1, (v1), a2, (v2)) 239#define KTR_POINT4(m, egroup, ident, point, a0, v0, a1, v1, a2, v2, a3, v3)\ 240 KTR_EVENT4(m, egroup, ident, "point:\"%s\"", \ 241 point, a0, (v0), a1, (v1), a2, (v2), a3, (v3)) 242 243/* 244 * Trace initialization events, similar to CTR with KTR_INIT, but 245 * completely ifdef'ed out if KTR_INIT isn't in KTR_COMPILE (to 246 * save string space, the compiler doesn't optimize out strings 247 * for the conditional ones above). 248 */ 249#if (KTR_COMPILE & KTR_INIT) != 0 250#define ITR0(d) CTR0(KTR_INIT, d) 251#define ITR1(d, p1) CTR1(KTR_INIT, d, p1) 252#define ITR2(d, p1, p2) CTR2(KTR_INIT, d, p1, p2) 253#define ITR3(d, p1, p2, p3) CTR3(KTR_INIT, d, p1, p2, p3) 254#define ITR4(d, p1, p2, p3, p4) CTR4(KTR_INIT, d, p1, p2, p3, p4) 255#define ITR5(d, p1, p2, p3, p4, p5) CTR5(KTR_INIT, d, p1, p2, p3, p4, p5) 256#define ITR6(d, p1, p2, p3, p4, p5, p6) CTR6(KTR_INIT, d, p1, p2, p3, p4, p5, p6) 257#else 258#define ITR0(d) 259#define ITR1(d, p1) 260#define ITR2(d, p1, p2) 261#define ITR3(d, p1, p2, p3) 262#define ITR4(d, p1, p2, p3, p4) 263#define ITR5(d, p1, p2, p3, p4, p5) 264#define ITR6(d, p1, p2, p3, p4, p5, p6) 265#endif 266 267#endif /* !LOCORE */ 268 269#endif /* !_SYS_KTR_H_ */ 270