17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*4df4bd60Sbs21162 * Common Development and Distribution License (the "License"). 6*4df4bd60Sbs21162 * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 217c478bd9Sstevel@tonic-gate /* 22*4df4bd60Sbs21162 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23*4df4bd60Sbs21162 * Use is subject to license terms. 247c478bd9Sstevel@tonic-gate */ 257c478bd9Sstevel@tonic-gate 267c478bd9Sstevel@tonic-gate #ifndef _SYS_FTRACE_H 277c478bd9Sstevel@tonic-gate #define _SYS_FTRACE_H 287c478bd9Sstevel@tonic-gate 297c478bd9Sstevel@tonic-gate #ifdef __cplusplus 307c478bd9Sstevel@tonic-gate extern "C" { 317c478bd9Sstevel@tonic-gate #endif 327c478bd9Sstevel@tonic-gate 337c478bd9Sstevel@tonic-gate /* 347c478bd9Sstevel@tonic-gate * Constants used by both asm and non-asm code. 357c478bd9Sstevel@tonic-gate */ 367c478bd9Sstevel@tonic-gate 377c478bd9Sstevel@tonic-gate /* 387c478bd9Sstevel@tonic-gate * Flags determining the state of tracing - 397c478bd9Sstevel@tonic-gate * both for the "ftrace_state" variable, and for the per-CPU variable 407c478bd9Sstevel@tonic-gate * "cpu[N]->cpu_ftrace_state". 417c478bd9Sstevel@tonic-gate */ 427c478bd9Sstevel@tonic-gate #define FTRACE_READY 0x00000001 437c478bd9Sstevel@tonic-gate #define FTRACE_ENABLED 0x00000002 447c478bd9Sstevel@tonic-gate 457c478bd9Sstevel@tonic-gate #if !defined(_ASM) 467c478bd9Sstevel@tonic-gate 477c478bd9Sstevel@tonic-gate #include <sys/thread.h> 487c478bd9Sstevel@tonic-gate #include <sys/cpuvar.h> 497c478bd9Sstevel@tonic-gate #include <sys/types.h> 507c478bd9Sstevel@tonic-gate 517c478bd9Sstevel@tonic-gate /* 527c478bd9Sstevel@tonic-gate * The record of a single event. 537c478bd9Sstevel@tonic-gate * 547c478bd9Sstevel@tonic-gate * Should fit nicely into a standard cache line. 557c478bd9Sstevel@tonic-gate * Here, the 32-bit version is 32 bytes, and the 64-bit version is 64 bytes. 567c478bd9Sstevel@tonic-gate */ 577c478bd9Sstevel@tonic-gate typedef struct ftrace_record { 587c478bd9Sstevel@tonic-gate char *ftr_event; 597c478bd9Sstevel@tonic-gate kthread_t *ftr_thread; 607c478bd9Sstevel@tonic-gate uint64_t ftr_tick; 617c478bd9Sstevel@tonic-gate caddr_t ftr_caller; 627c478bd9Sstevel@tonic-gate ulong_t ftr_data1; 637c478bd9Sstevel@tonic-gate ulong_t ftr_data2; 647c478bd9Sstevel@tonic-gate ulong_t ftr_data3; 657c478bd9Sstevel@tonic-gate #ifdef _LP64 667c478bd9Sstevel@tonic-gate ulong_t __pad; 677c478bd9Sstevel@tonic-gate #endif 687c478bd9Sstevel@tonic-gate } ftrace_record_t; 697c478bd9Sstevel@tonic-gate 707c478bd9Sstevel@tonic-gate /* 717c478bd9Sstevel@tonic-gate * Default per-CPU event ring buffer size. 727c478bd9Sstevel@tonic-gate */ 737c478bd9Sstevel@tonic-gate #define FTRACE_NENT 1024 747c478bd9Sstevel@tonic-gate 757c478bd9Sstevel@tonic-gate #ifdef _KERNEL 767c478bd9Sstevel@tonic-gate 777c478bd9Sstevel@tonic-gate /* 787c478bd9Sstevel@tonic-gate * Tunable parameters in /etc/system. 797c478bd9Sstevel@tonic-gate */ 807c478bd9Sstevel@tonic-gate extern int ftrace_atboot; /* Whether to start fast tracing on boot. */ 817c478bd9Sstevel@tonic-gate extern int ftrace_nent; /* Size of the per-CPU event ring buffer. */ 827c478bd9Sstevel@tonic-gate 837c478bd9Sstevel@tonic-gate extern int ftrace_cpu_setup(cpu_setup_t, int, void *); 847c478bd9Sstevel@tonic-gate extern void ftrace_init(void); 857c478bd9Sstevel@tonic-gate extern int ftrace_start(void); 867c478bd9Sstevel@tonic-gate extern int ftrace_stop(void); 87*4df4bd60Sbs21162 extern void ftrace_0(char *, caddr_t); 88*4df4bd60Sbs21162 extern void ftrace_1(char *, ulong_t, caddr_t); 89*4df4bd60Sbs21162 extern void ftrace_2(char *, ulong_t, ulong_t, caddr_t); 90*4df4bd60Sbs21162 extern void ftrace_3(char *, ulong_t, ulong_t, ulong_t, caddr_t); 91*4df4bd60Sbs21162 extern void ftrace_3_notick(char *, ulong_t, ulong_t, ulong_t, 92*4df4bd60Sbs21162 caddr_t); 93*4df4bd60Sbs21162 94*4df4bd60Sbs21162 typedef uintptr_t ftrace_icookie_t; 95*4df4bd60Sbs21162 extern ftrace_icookie_t ftrace_interrupt_disable(void); 96*4df4bd60Sbs21162 extern void ftrace_interrupt_enable(ftrace_icookie_t); 97*4df4bd60Sbs21162 extern caddr_t caller(void); 987c478bd9Sstevel@tonic-gate 997c478bd9Sstevel@tonic-gate #define FTRACE_0(fmt) \ 1007c478bd9Sstevel@tonic-gate { \ 1017c478bd9Sstevel@tonic-gate if (CPU->cpu_ftrace.ftd_state & FTRACE_ENABLED) \ 102*4df4bd60Sbs21162 ftrace_0(fmt, caller()); \ 1037c478bd9Sstevel@tonic-gate } 1047c478bd9Sstevel@tonic-gate #define FTRACE_1(fmt, d1) \ 1057c478bd9Sstevel@tonic-gate { \ 1067c478bd9Sstevel@tonic-gate if (CPU->cpu_ftrace.ftd_state & FTRACE_ENABLED) \ 107*4df4bd60Sbs21162 ftrace_1(fmt, d1, caller()); \ 1087c478bd9Sstevel@tonic-gate } 1097c478bd9Sstevel@tonic-gate #define FTRACE_2(fmt, d1, d2) \ 1107c478bd9Sstevel@tonic-gate { \ 1117c478bd9Sstevel@tonic-gate if (CPU->cpu_ftrace.ftd_state & FTRACE_ENABLED) \ 112*4df4bd60Sbs21162 ftrace_2(fmt, d1, d2, caller()); \ 1137c478bd9Sstevel@tonic-gate } 1147c478bd9Sstevel@tonic-gate #define FTRACE_3(fmt, d1, d2, d3) \ 1157c478bd9Sstevel@tonic-gate { \ 1167c478bd9Sstevel@tonic-gate if (CPU->cpu_ftrace.ftd_state & FTRACE_ENABLED) \ 117*4df4bd60Sbs21162 ftrace_3(fmt, d1, d2, d3, caller()); \ 1187c478bd9Sstevel@tonic-gate } 1197c478bd9Sstevel@tonic-gate #define FTRACE_START() ftrace_start() 1207c478bd9Sstevel@tonic-gate #define FTRACE_STOP() ftrace_stop() 1217c478bd9Sstevel@tonic-gate 1227c478bd9Sstevel@tonic-gate #endif /* _KERNEL */ 1237c478bd9Sstevel@tonic-gate 1247c478bd9Sstevel@tonic-gate #endif /* !defined(_ASM) */ 1257c478bd9Sstevel@tonic-gate 1267c478bd9Sstevel@tonic-gate #ifdef __cplusplus 1277c478bd9Sstevel@tonic-gate } 1287c478bd9Sstevel@tonic-gate #endif 1297c478bd9Sstevel@tonic-gate 1307c478bd9Sstevel@tonic-gate #endif /* _SYS_FTRACE_H */ 131