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 #pragma ident "%Z%%M% %I% %E% SMI" 30 31 #ifdef __cplusplus 32 extern "C" { 33 #endif 34 35 /* 36 * Constants used by both asm and non-asm code. 37 */ 38 39 /* 40 * Flags determining the state of tracing - 41 * both for the "ftrace_state" variable, and for the per-CPU variable 42 * "cpu[N]->cpu_ftrace_state". 43 */ 44 #define FTRACE_READY 0x00000001 45 #define FTRACE_ENABLED 0x00000002 46 47 #if !defined(_ASM) 48 49 #include <sys/thread.h> 50 #include <sys/cpuvar.h> 51 #include <sys/types.h> 52 53 /* 54 * The record of a single event. 55 * 56 * Should fit nicely into a standard cache line. 57 * Here, the 32-bit version is 32 bytes, and the 64-bit version is 64 bytes. 58 */ 59 typedef struct ftrace_record { 60 char *ftr_event; 61 kthread_t *ftr_thread; 62 uint64_t ftr_tick; 63 caddr_t ftr_caller; 64 ulong_t ftr_data1; 65 ulong_t ftr_data2; 66 ulong_t ftr_data3; 67 #ifdef _LP64 68 ulong_t __pad; 69 #endif 70 } ftrace_record_t; 71 72 /* 73 * Default per-CPU event ring buffer size. 74 */ 75 #define FTRACE_NENT 1024 76 77 #ifdef _KERNEL 78 79 /* 80 * Tunable parameters in /etc/system. 81 */ 82 extern int ftrace_atboot; /* Whether to start fast tracing on boot. */ 83 extern int ftrace_nent; /* Size of the per-CPU event ring buffer. */ 84 85 extern int ftrace_cpu_setup(cpu_setup_t, int, void *); 86 extern void ftrace_init(void); 87 extern int ftrace_start(void); 88 extern int ftrace_stop(void); 89 extern void ftrace_0(char *, caddr_t); 90 extern void ftrace_1(char *, ulong_t, caddr_t); 91 extern void ftrace_2(char *, ulong_t, ulong_t, caddr_t); 92 extern void ftrace_3(char *, ulong_t, ulong_t, ulong_t, caddr_t); 93 extern void ftrace_3_notick(char *, ulong_t, ulong_t, ulong_t, 94 caddr_t); 95 96 typedef uintptr_t ftrace_icookie_t; 97 extern ftrace_icookie_t ftrace_interrupt_disable(void); 98 extern void ftrace_interrupt_enable(ftrace_icookie_t); 99 extern caddr_t caller(void); 100 101 #define FTRACE_0(fmt) \ 102 { \ 103 if (CPU->cpu_ftrace.ftd_state & FTRACE_ENABLED) \ 104 ftrace_0(fmt, caller()); \ 105 } 106 #define FTRACE_1(fmt, d1) \ 107 { \ 108 if (CPU->cpu_ftrace.ftd_state & FTRACE_ENABLED) \ 109 ftrace_1(fmt, d1, caller()); \ 110 } 111 #define FTRACE_2(fmt, d1, d2) \ 112 { \ 113 if (CPU->cpu_ftrace.ftd_state & FTRACE_ENABLED) \ 114 ftrace_2(fmt, d1, d2, caller()); \ 115 } 116 #define FTRACE_3(fmt, d1, d2, d3) \ 117 { \ 118 if (CPU->cpu_ftrace.ftd_state & FTRACE_ENABLED) \ 119 ftrace_3(fmt, d1, d2, d3, caller()); \ 120 } 121 #define FTRACE_START() ftrace_start() 122 #define FTRACE_STOP() ftrace_stop() 123 124 #endif /* _KERNEL */ 125 126 #endif /* !defined(_ASM) */ 127 128 #ifdef __cplusplus 129 } 130 #endif 131 132 #endif /* _SYS_FTRACE_H */ 133