The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/dtrace_bsd.h

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    1 /*-
    2  * Copyright (c) 2007-2008 John Birrell (jb@freebsd.org)
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  *
   26  * $FreeBSD: releng/8.1/sys/sys/dtrace_bsd.h 199583 2009-11-20 15:27:52Z jhb $
   27  *
   28  * This file contains BSD shims for Sun's DTrace code.
   29  */
   30 
   31 #ifndef _SYS_DTRACE_BSD_H
   32 #define _SYS_DTRACE_BSD_H
   33 
   34 /* Forward definitions: */
   35 struct mbuf;
   36 struct trapframe;
   37 struct thread;
   38 struct vattr;
   39 struct vnode;
   40 
   41 /*
   42  * Cyclic clock function type definition used to hook the cyclic
   43  * subsystem into the appropriate timer interrupt.
   44  */
   45 typedef void (*cyclic_clock_func_t)(struct trapframe *);
   46 
   47 /*
   48  * These external variables are actually machine-dependent, so
   49  * they might not actually exist.
   50  *
   51  * Defining them here avoids a proliferation of header files.
   52  */
   53 extern cyclic_clock_func_t     lapic_cyclic_clock_func[];
   54 
   55 /*
   56  * The dtrace module handles traps that occur during a DTrace probe.
   57  * This type definition is used in the trap handler to provide a
   58  * hook for the dtrace module to register it's handler with.
   59  */
   60 typedef int (*dtrace_trap_func_t)(struct trapframe *, u_int);
   61 
   62 int     dtrace_trap(struct trapframe *, u_int);
   63 
   64 extern dtrace_trap_func_t       dtrace_trap_func;
   65 
   66 /* Used by the machine dependent trap() code. */
   67 typedef int (*dtrace_invop_func_t)(uintptr_t, uintptr_t *, uintptr_t);
   68 typedef void (*dtrace_doubletrap_func_t)(void);
   69 
   70 /* Global variables in trap.c */
   71 extern  dtrace_invop_func_t     dtrace_invop_func;
   72 extern  dtrace_doubletrap_func_t        dtrace_doubletrap_func;
   73 
   74 /* Virtual time hook function type. */
   75 typedef void (*dtrace_vtime_switch_func_t)(struct thread *);
   76 
   77 extern int                      dtrace_vtime_active;
   78 extern dtrace_vtime_switch_func_t       dtrace_vtime_switch_func;
   79 
   80 /* The fasttrap module hooks into the fork, exit and exit. */
   81 typedef void (*dtrace_fork_func_t)(struct proc *, struct proc *);
   82 typedef void (*dtrace_execexit_func_t)(struct proc *);
   83 
   84 /* Global variable in kern_fork.c */
   85 extern dtrace_fork_func_t       dtrace_fasttrap_fork;
   86 
   87 /* Global variable in kern_exec.c */
   88 extern dtrace_execexit_func_t   dtrace_fasttrap_exec;
   89 
   90 /* Global variable in kern_exit.c */
   91 extern dtrace_execexit_func_t   dtrace_fasttrap_exit;
   92 
   93 /* The dtmalloc provider hooks into malloc. */
   94 typedef void (*dtrace_malloc_probe_func_t)(u_int32_t, uintptr_t arg0,
   95     uintptr_t arg1, uintptr_t arg2, uintptr_t arg3, uintptr_t arg4);
   96 
   97 extern dtrace_malloc_probe_func_t   dtrace_malloc_probe;
   98 
   99 /* dtnfsclient NFSv3 access cache provider hooks. */
  100 typedef void (*dtrace_nfsclient_accesscache_flush_probe_func_t)(uint32_t,
  101     struct vnode *);
  102 extern dtrace_nfsclient_accesscache_flush_probe_func_t
  103     dtrace_nfsclient_accesscache_flush_done_probe;
  104 
  105 typedef void (*dtrace_nfsclient_accesscache_get_probe_func_t)(uint32_t,
  106     struct vnode *, uid_t, uint32_t);
  107 extern dtrace_nfsclient_accesscache_get_probe_func_t
  108     dtrace_nfsclient_accesscache_get_hit_probe,
  109     dtrace_nfsclient_accesscache_get_miss_probe;
  110 
  111 typedef void (*dtrace_nfsclient_accesscache_load_probe_func_t)(uint32_t,
  112     struct vnode *, uid_t, uint32_t, int);
  113 extern dtrace_nfsclient_accesscache_load_probe_func_t
  114     dtrace_nfsclient_accesscache_load_done_probe;
  115 
  116 /* dtnfsclient NFSv[23] attribute cache provider hooks. */
  117 typedef void (*dtrace_nfsclient_attrcache_flush_probe_func_t)(uint32_t,
  118     struct vnode *);
  119 extern dtrace_nfsclient_attrcache_flush_probe_func_t
  120     dtrace_nfsclient_attrcache_flush_done_probe;
  121 
  122 typedef void (*dtrace_nfsclient_attrcache_get_hit_probe_func_t)(uint32_t,
  123     struct vnode *, struct vattr *);
  124 extern dtrace_nfsclient_attrcache_get_hit_probe_func_t
  125     dtrace_nfsclient_attrcache_get_hit_probe;
  126 
  127 typedef void (*dtrace_nfsclient_attrcache_get_miss_probe_func_t)(uint32_t,
  128     struct vnode *);
  129 extern dtrace_nfsclient_attrcache_get_miss_probe_func_t
  130     dtrace_nfsclient_attrcache_get_miss_probe;
  131 
  132 typedef void (*dtrace_nfsclient_attrcache_load_probe_func_t)(uint32_t,
  133     struct vnode *, struct vattr *, int);
  134 extern dtrace_nfsclient_attrcache_load_probe_func_t
  135     dtrace_nfsclient_attrcache_load_done_probe;
  136 
  137 /* dtnfsclient NFSv[23] RPC provider hooks. */
  138 typedef void (*dtrace_nfsclient_nfs23_start_probe_func_t)(uint32_t,
  139     struct vnode *, struct mbuf *, struct ucred *, int);
  140 extern dtrace_nfsclient_nfs23_start_probe_func_t
  141     dtrace_nfsclient_nfs23_start_probe;
  142 
  143 typedef void (*dtrace_nfsclient_nfs23_done_probe_func_t)(uint32_t,
  144     struct vnode *, struct mbuf *, struct ucred *, int, int);
  145 extern dtrace_nfsclient_nfs23_done_probe_func_t
  146     dtrace_nfsclient_nfs23_done_probe;
  147 
  148 /*
  149  * Functions which allow the dtrace module to check that the kernel 
  150  * hooks have been compiled with sufficient space for it's private
  151  * structures.
  152  */
  153 size_t  kdtrace_proc_size(void);
  154 size_t  kdtrace_thread_size(void);
  155 
  156 /*
  157  * OpenSolaris compatible time functions returning nanoseconds.
  158  * On OpenSolaris these return hrtime_t which we define as uint64_t.
  159  */
  160 uint64_t        dtrace_gethrtime(void);
  161 uint64_t        dtrace_gethrestime(void);
  162 
  163 #endif /* _SYS_DTRACE_BSD_H */

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