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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_FTRACE_H
#define _SYS_FTRACE_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
/*
* Constants used by both asm and non-asm code.
*/
/*
* Flags determining the state of tracing -
* both for the "ftrace_state" variable, and for the per-CPU variable
* "cpu[N]->cpu_ftrace_state".
*/
#define FTRACE_READY 0x00000001
#define FTRACE_ENABLED 0x00000002
#if !defined(_ASM)
#include <sys/thread.h>
#include <sys/cpuvar.h>
#include <sys/types.h>
/*
* The record of a single event.
*
* Should fit nicely into a standard cache line.
* Here, the 32-bit version is 32 bytes, and the 64-bit version is 64 bytes.
*/
typedef struct ftrace_record {
char *ftr_event;
kthread_t *ftr_thread;
uint64_t ftr_tick;
caddr_t ftr_caller;
ulong_t ftr_data1;
ulong_t ftr_data2;
ulong_t ftr_data3;
#ifdef _LP64
ulong_t __pad;
#endif
} ftrace_record_t;
/*
* Default per-CPU event ring buffer size.
*/
#define FTRACE_NENT 1024
#ifdef _KERNEL
/*
* Tunable parameters in /etc/system.
*/
extern int ftrace_atboot; /* Whether to start fast tracing on boot. */
extern int ftrace_nent; /* Size of the per-CPU event ring buffer. */
extern int ftrace_cpu_setup(cpu_setup_t, int, void *);
extern void ftrace_init(void);
extern int ftrace_start(void);
extern int ftrace_stop(void);
extern void ftrace_0(char *, caddr_t);
extern void ftrace_1(char *, ulong_t, caddr_t);
extern void ftrace_2(char *, ulong_t, ulong_t, caddr_t);
extern void ftrace_3(char *, ulong_t, ulong_t, ulong_t, caddr_t);
extern void ftrace_3_notick(char *, ulong_t, ulong_t, ulong_t,
caddr_t);
typedef uintptr_t ftrace_icookie_t;
extern ftrace_icookie_t ftrace_interrupt_disable(void);
extern void ftrace_interrupt_enable(ftrace_icookie_t);
extern caddr_t caller(void);
#define FTRACE_0(fmt) \
{ \
if (CPU->cpu_ftrace.ftd_state & FTRACE_ENABLED) \
ftrace_0(fmt, caller()); \
}
#define FTRACE_1(fmt, d1) \
{ \
if (CPU->cpu_ftrace.ftd_state & FTRACE_ENABLED) \
ftrace_1(fmt, d1, caller()); \
}
#define FTRACE_2(fmt, d1, d2) \
{ \
if (CPU->cpu_ftrace.ftd_state & FTRACE_ENABLED) \
ftrace_2(fmt, d1, d2, caller()); \
}
#define FTRACE_3(fmt, d1, d2, d3) \
{ \
if (CPU->cpu_ftrace.ftd_state & FTRACE_ENABLED) \
ftrace_3(fmt, d1, d2, d3, caller()); \
}
#define FTRACE_START() ftrace_start()
#define FTRACE_STOP() ftrace_stop()
#endif /* _KERNEL */
#endif /* !defined(_ASM) */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_FTRACE_H */
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