1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright (c) 1998 by Sun Microsystems, Inc. 24 * All rights reserved. 25 */ 26 27 #ifndef _SYS_FTRACE_H 28 #define _SYS_FTRACE_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 /* 37 * Constants used by both asm and non-asm code. 38 */ 39 40 /* 41 * Flags determining the state of tracing - 42 * both for the "ftrace_state" variable, and for the per-CPU variable 43 * "cpu[N]->cpu_ftrace_state". 44 */ 45 #define FTRACE_READY 0x00000001 46 #define FTRACE_ENABLED 0x00000002 47 48 #if !defined(_ASM) 49 50 #include <sys/thread.h> 51 #include <sys/cpuvar.h> 52 #include <sys/types.h> 53 54 /* 55 * The record of a single event. 56 * 57 * Should fit nicely into a standard cache line. 58 * Here, the 32-bit version is 32 bytes, and the 64-bit version is 64 bytes. 59 */ 60 typedef struct ftrace_record { 61 char *ftr_event; 62 kthread_t *ftr_thread; 63 uint64_t ftr_tick; 64 caddr_t ftr_caller; 65 ulong_t ftr_data1; 66 ulong_t ftr_data2; 67 ulong_t ftr_data3; 68 #ifdef _LP64 69 ulong_t __pad; 70 #endif 71 } ftrace_record_t; 72 73 /* 74 * Default per-CPU event ring buffer size. 75 */ 76 #define FTRACE_NENT 1024 77 78 #ifdef _KERNEL 79 80 /* 81 * Tunable parameters in /etc/system. 82 */ 83 extern int ftrace_atboot; /* Whether to start fast tracing on boot. */ 84 extern int ftrace_nent; /* Size of the per-CPU event ring buffer. */ 85 86 extern int ftrace_cpu_setup(cpu_setup_t, int, void *); 87 extern void ftrace_init(void); 88 extern int ftrace_start(void); 89 extern int ftrace_stop(void); 90 extern void ftrace_0(char *); 91 extern void ftrace_1(char *, ulong_t); 92 extern void ftrace_2(char *, ulong_t, ulong_t); 93 extern void ftrace_3(char *, ulong_t, ulong_t, ulong_t); 94 95 #define FTRACE_0(fmt) \ 96 { \ 97 if (CPU->cpu_ftrace.ftd_state & FTRACE_ENABLED) \ 98 ftrace_0(fmt); \ 99 } 100 #define FTRACE_1(fmt, d1) \ 101 { \ 102 if (CPU->cpu_ftrace.ftd_state & FTRACE_ENABLED) \ 103 ftrace_1(fmt, d1); \ 104 } 105 #define FTRACE_2(fmt, d1, d2) \ 106 { \ 107 if (CPU->cpu_ftrace.ftd_state & FTRACE_ENABLED) \ 108 ftrace_2(fmt, d1, d2); \ 109 } 110 #define FTRACE_3(fmt, d1, d2, d3) \ 111 { \ 112 if (CPU->cpu_ftrace.ftd_state & FTRACE_ENABLED) \ 113 ftrace_3(fmt, d1, d2, d3); \ 114 } 115 #define FTRACE_START() ftrace_start() 116 #define FTRACE_STOP() ftrace_stop() 117 118 #endif /* _KERNEL */ 119 120 #endif /* !defined(_ASM) */ 121 122 #ifdef __cplusplus 123 } 124 #endif 125 126 #endif /* _SYS_FTRACE_H */ 127