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/11.1/sys/sys/dtrace_bsd.h 276142 2014-12-23 15:38:19Z markj $
   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 struct reg;
   41 
   42 int dtrace_trap(struct trapframe *, u_int);
   43 
   44 /*
   45  * The dtrace module handles traps that occur during a DTrace probe.
   46  * This type definition is used in the trap handler to provide a
   47  * hook for the dtrace module to register its handler with.
   48  */
   49 typedef int (*dtrace_trap_func_t)(struct trapframe *, u_int);
   50 extern dtrace_trap_func_t       dtrace_trap_func;
   51 
   52 /*
   53  * A hook which removes active FBT probes before executing the double fault
   54  * handler. We want to ensure that DTrace doesn't trigger another trap, which
   55  * would result in a reset.
   56  */
   57 typedef void (*dtrace_doubletrap_func_t)(void);
   58 extern  dtrace_doubletrap_func_t        dtrace_doubletrap_func;
   59 
   60 /* Pid provider hooks */
   61 typedef int (*dtrace_pid_probe_ptr_t)(struct reg *);
   62 extern  dtrace_pid_probe_ptr_t  dtrace_pid_probe_ptr;
   63 typedef int (*dtrace_return_probe_ptr_t)(struct reg *);
   64 extern  dtrace_return_probe_ptr_t       dtrace_return_probe_ptr;
   65 
   66 /* Virtual time hook function type. */
   67 typedef void (*dtrace_vtime_switch_func_t)(struct thread *);
   68 
   69 extern int                      dtrace_vtime_active;
   70 extern dtrace_vtime_switch_func_t       dtrace_vtime_switch_func;
   71 
   72 /* The fasttrap module hooks into the fork, exit and exit. */
   73 typedef void (*dtrace_fork_func_t)(struct proc *, struct proc *);
   74 typedef void (*dtrace_execexit_func_t)(struct proc *);
   75 
   76 /* Global variable in kern_fork.c */
   77 extern dtrace_fork_func_t       dtrace_fasttrap_fork;
   78 
   79 /* Global variable in kern_exec.c */
   80 extern dtrace_execexit_func_t   dtrace_fasttrap_exec;
   81 
   82 /* Global variable in kern_exit.c */
   83 extern dtrace_execexit_func_t   dtrace_fasttrap_exit;
   84 
   85 /* The dtmalloc provider hooks into malloc. */
   86 typedef void (*dtrace_malloc_probe_func_t)(u_int32_t, uintptr_t arg0,
   87     uintptr_t arg1, uintptr_t arg2, uintptr_t arg3, uintptr_t arg4);
   88 
   89 extern dtrace_malloc_probe_func_t   dtrace_malloc_probe;
   90 
   91 /* dtnfsclient NFSv[34] access cache provider hooks. */
   92 typedef void (*dtrace_nfsclient_accesscache_flush_probe_func_t)(uint32_t,
   93     struct vnode *);
   94 extern dtrace_nfsclient_accesscache_flush_probe_func_t
   95     dtrace_nfsclient_accesscache_flush_done_probe;
   96 extern dtrace_nfsclient_accesscache_flush_probe_func_t
   97     dtrace_nfscl_accesscache_flush_done_probe;
   98 
   99 typedef void (*dtrace_nfsclient_accesscache_get_probe_func_t)(uint32_t,
  100     struct vnode *, uid_t, uint32_t);
  101 extern dtrace_nfsclient_accesscache_get_probe_func_t
  102     dtrace_nfsclient_accesscache_get_hit_probe,
  103     dtrace_nfsclient_accesscache_get_miss_probe;
  104 extern dtrace_nfsclient_accesscache_get_probe_func_t
  105     dtrace_nfscl_accesscache_get_hit_probe,
  106     dtrace_nfscl_accesscache_get_miss_probe;
  107 
  108 typedef void (*dtrace_nfsclient_accesscache_load_probe_func_t)(uint32_t,
  109     struct vnode *, uid_t, uint32_t, int);
  110 extern dtrace_nfsclient_accesscache_load_probe_func_t
  111     dtrace_nfsclient_accesscache_load_done_probe;
  112 extern dtrace_nfsclient_accesscache_load_probe_func_t
  113     dtrace_nfscl_accesscache_load_done_probe;
  114 
  115 /* dtnfsclient NFSv[234] attribute cache provider hooks. */
  116 typedef void (*dtrace_nfsclient_attrcache_flush_probe_func_t)(uint32_t,
  117     struct vnode *);
  118 extern dtrace_nfsclient_attrcache_flush_probe_func_t
  119     dtrace_nfsclient_attrcache_flush_done_probe;
  120 extern dtrace_nfsclient_attrcache_flush_probe_func_t
  121     dtrace_nfscl_attrcache_flush_done_probe;
  122 
  123 typedef void (*dtrace_nfsclient_attrcache_get_hit_probe_func_t)(uint32_t,
  124     struct vnode *, struct vattr *);
  125 extern dtrace_nfsclient_attrcache_get_hit_probe_func_t
  126     dtrace_nfsclient_attrcache_get_hit_probe;
  127 extern dtrace_nfsclient_attrcache_get_hit_probe_func_t
  128     dtrace_nfscl_attrcache_get_hit_probe;
  129 
  130 typedef void (*dtrace_nfsclient_attrcache_get_miss_probe_func_t)(uint32_t,
  131     struct vnode *);
  132 extern dtrace_nfsclient_attrcache_get_miss_probe_func_t
  133     dtrace_nfsclient_attrcache_get_miss_probe;
  134 extern dtrace_nfsclient_attrcache_get_miss_probe_func_t
  135     dtrace_nfscl_attrcache_get_miss_probe;
  136 
  137 typedef void (*dtrace_nfsclient_attrcache_load_probe_func_t)(uint32_t,
  138     struct vnode *, struct vattr *, int);
  139 extern dtrace_nfsclient_attrcache_load_probe_func_t
  140     dtrace_nfsclient_attrcache_load_done_probe;
  141 extern dtrace_nfsclient_attrcache_load_probe_func_t
  142     dtrace_nfscl_attrcache_load_done_probe;
  143 
  144 /* dtnfsclient NFSv[234] RPC provider hooks. */
  145 typedef void (*dtrace_nfsclient_nfs23_start_probe_func_t)(uint32_t,
  146     struct vnode *, struct mbuf *, struct ucred *, int);
  147 extern dtrace_nfsclient_nfs23_start_probe_func_t
  148     dtrace_nfsclient_nfs23_start_probe;
  149 extern dtrace_nfsclient_nfs23_start_probe_func_t
  150     dtrace_nfscl_nfs234_start_probe;
  151 
  152 typedef void (*dtrace_nfsclient_nfs23_done_probe_func_t)(uint32_t,
  153     struct vnode *, struct mbuf *, struct ucred *, int, int);
  154 extern dtrace_nfsclient_nfs23_done_probe_func_t
  155     dtrace_nfsclient_nfs23_done_probe;
  156 extern dtrace_nfsclient_nfs23_done_probe_func_t
  157     dtrace_nfscl_nfs234_done_probe;
  158 
  159 /*
  160  * Functions which allow the dtrace module to check that the kernel 
  161  * hooks have been compiled with sufficient space for it's private
  162  * structures.
  163  */
  164 size_t  kdtrace_proc_size(void);
  165 size_t  kdtrace_thread_size(void);
  166 
  167 /*
  168  * OpenSolaris compatible time functions returning nanoseconds.
  169  * On OpenSolaris these return hrtime_t which we define as uint64_t.
  170  */
  171 uint64_t        dtrace_gethrtime(void);
  172 uint64_t        dtrace_gethrestime(void);
  173 
  174 #endif /* _SYS_DTRACE_BSD_H */

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