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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _SYS_FTRACE_H 27 #define _SYS_FTRACE_H 28 29 #ifdef __cplusplus 30 extern "C" { 31 #endif 32 33 /* 34 * Constants used by both asm and non-asm code. 35 */ 36 37 /* 38 * Flags determining the state of tracing - 39 * both for the "ftrace_state" variable, and for the per-CPU variable 40 * "cpu[N]->cpu_ftrace_state". 41 */ 42 #define FTRACE_READY 0x00000001 43 #define FTRACE_ENABLED 0x00000002 44 45 #if !defined(_ASM) 46 47 #include <sys/thread.h> 48 #include <sys/cpuvar.h> 49 #include <sys/types.h> 50 51 /* 52 * The record of a single event. 53 * 54 * Should fit nicely into a standard cache line. 55 * Here, the 32-bit version is 32 bytes, and the 64-bit version is 64 bytes. 56 */ 57 typedef struct ftrace_record { 58 char *ftr_event; 59 kthread_t *ftr_thread; 60 uint64_t ftr_tick; 61 caddr_t ftr_caller; 62 ulong_t ftr_data1; 63 ulong_t ftr_data2; 64 ulong_t ftr_data3; 65 #ifdef _LP64 66 ulong_t __pad; 67 #endif 68 } ftrace_record_t; 69 70 /* 71 * Default per-CPU event ring buffer size. 72 */ 73 #define FTRACE_NENT 1024 74 75 #ifdef _KERNEL 76 77 /* 78 * Tunable parameters in /etc/system. 79 */ 80 extern int ftrace_atboot; /* Whether to start fast tracing on boot. */ 81 extern int ftrace_nent; /* Size of the per-CPU event ring buffer. */ 82 83 extern int ftrace_cpu_setup(cpu_setup_t, int, void *); 84 extern void ftrace_init(void); 85 extern int ftrace_start(void); 86 extern int ftrace_stop(void); 87 extern void ftrace_0(char *, caddr_t); 88 extern void ftrace_1(char *, ulong_t, caddr_t); 89 extern void ftrace_2(char *, ulong_t, ulong_t, caddr_t); 90 extern void ftrace_3(char *, ulong_t, ulong_t, ulong_t, caddr_t); 91 extern void ftrace_3_notick(char *, ulong_t, ulong_t, ulong_t, 92 caddr_t); 93 94 typedef uintptr_t ftrace_icookie_t; 95 extern ftrace_icookie_t ftrace_interrupt_disable(void); 96 extern void ftrace_interrupt_enable(ftrace_icookie_t); 97 extern caddr_t caller(void); 98 99 #define FTRACE_0(fmt) \ 100 { \ 101 if (CPU->cpu_ftrace.ftd_state & FTRACE_ENABLED) \ 102 ftrace_0(fmt, caller()); \ 103 } 104 #define FTRACE_1(fmt, d1) \ 105 { \ 106 if (CPU->cpu_ftrace.ftd_state & FTRACE_ENABLED) \ 107 ftrace_1(fmt, d1, caller()); \ 108 } 109 #define FTRACE_2(fmt, d1, d2) \ 110 { \ 111 if (CPU->cpu_ftrace.ftd_state & FTRACE_ENABLED) \ 112 ftrace_2(fmt, d1, d2, caller()); \ 113 } 114 #define FTRACE_3(fmt, d1, d2, d3) \ 115 { \ 116 if (CPU->cpu_ftrace.ftd_state & FTRACE_ENABLED) \ 117 ftrace_3(fmt, d1, d2, d3, caller()); \ 118 } 119 #define FTRACE_START() ftrace_start() 120 #define FTRACE_STOP() ftrace_stop() 121 122 #endif /* _KERNEL */ 123 124 #endif /* !defined(_ASM) */ 125 126 #ifdef __cplusplus 127 } 128 #endif 129 130 #endif /* _SYS_FTRACE_H */ 131