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  * $FreeBSD$
   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 struct devstat;
   42 struct bio;
   43 
   44 /*
   45  * Cyclic clock function type definition used to hook the cyclic
   46  * subsystem into the appropriate timer interrupt.
   47  */
   48 typedef void (*cyclic_clock_func_t)(struct trapframe *);
   49 extern cyclic_clock_func_t      cyclic_clock_func;
   50 
   51 void clocksource_cyc_set(const struct bintime *t);
   52 
   53 /*
   54  * The dtrace module handles traps that occur during a DTrace probe.
   55  * This type definition is used in the trap handler to provide a
   56  * hook for the dtrace module to register it's handler with.
   57  */
   58 typedef int (*dtrace_trap_func_t)(struct trapframe *, u_int);
   59 
   60 int     dtrace_trap(struct trapframe *, u_int);
   61 
   62 extern dtrace_trap_func_t       dtrace_trap_func;
   63 
   64 /* Used by the machine dependent trap() code. */
   65 typedef int (*dtrace_invop_func_t)(uintptr_t, uintptr_t *, uintptr_t);
   66 typedef void (*dtrace_doubletrap_func_t)(void);
   67 
   68 /* Global variables in trap.c */
   69 extern  dtrace_invop_func_t     dtrace_invop_func;
   70 extern  dtrace_doubletrap_func_t        dtrace_doubletrap_func;
   71 
   72 /* Pid provider hooks */
   73 typedef int (*dtrace_pid_probe_ptr_t)(struct reg *);
   74 extern  dtrace_pid_probe_ptr_t  dtrace_pid_probe_ptr;
   75 typedef int (*dtrace_return_probe_ptr_t)(struct reg *);
   76 extern  dtrace_return_probe_ptr_t       dtrace_return_probe_ptr;
   77 
   78 /* Virtual time hook function type. */
   79 typedef void (*dtrace_vtime_switch_func_t)(struct thread *);
   80 
   81 extern int                      dtrace_vtime_active;
   82 extern dtrace_vtime_switch_func_t       dtrace_vtime_switch_func;
   83 
   84 /* The fasttrap module hooks into the fork, exit and exit. */
   85 typedef void (*dtrace_fork_func_t)(struct proc *, struct proc *);
   86 typedef void (*dtrace_execexit_func_t)(struct proc *);
   87 
   88 /* Global variable in kern_fork.c */
   89 extern dtrace_fork_func_t       dtrace_fasttrap_fork;
   90 
   91 /* Global variable in kern_exec.c */
   92 extern dtrace_execexit_func_t   dtrace_fasttrap_exec;
   93 
   94 /* Global variable in kern_exit.c */
   95 extern dtrace_execexit_func_t   dtrace_fasttrap_exit;
   96 
   97 /* The dtmalloc provider hooks into malloc. */
   98 typedef void (*dtrace_malloc_probe_func_t)(u_int32_t, uintptr_t arg0,
   99     uintptr_t arg1, uintptr_t arg2, uintptr_t arg3, uintptr_t arg4);
  100 
  101 extern dtrace_malloc_probe_func_t   dtrace_malloc_probe;
  102 
  103 /* dtnfsclient NFSv[34] access cache provider hooks. */
  104 typedef void (*dtrace_nfsclient_accesscache_flush_probe_func_t)(uint32_t,
  105     struct vnode *);
  106 extern dtrace_nfsclient_accesscache_flush_probe_func_t
  107     dtrace_nfsclient_accesscache_flush_done_probe;
  108 extern dtrace_nfsclient_accesscache_flush_probe_func_t
  109     dtrace_nfscl_accesscache_flush_done_probe;
  110 
  111 typedef void (*dtrace_nfsclient_accesscache_get_probe_func_t)(uint32_t,
  112     struct vnode *, uid_t, uint32_t);
  113 extern dtrace_nfsclient_accesscache_get_probe_func_t
  114     dtrace_nfsclient_accesscache_get_hit_probe,
  115     dtrace_nfsclient_accesscache_get_miss_probe;
  116 extern dtrace_nfsclient_accesscache_get_probe_func_t
  117     dtrace_nfscl_accesscache_get_hit_probe,
  118     dtrace_nfscl_accesscache_get_miss_probe;
  119 
  120 typedef void (*dtrace_nfsclient_accesscache_load_probe_func_t)(uint32_t,
  121     struct vnode *, uid_t, uint32_t, int);
  122 extern dtrace_nfsclient_accesscache_load_probe_func_t
  123     dtrace_nfsclient_accesscache_load_done_probe;
  124 extern dtrace_nfsclient_accesscache_load_probe_func_t
  125     dtrace_nfscl_accesscache_load_done_probe;
  126 
  127 /* dtnfsclient NFSv[234] attribute cache provider hooks. */
  128 typedef void (*dtrace_nfsclient_attrcache_flush_probe_func_t)(uint32_t,
  129     struct vnode *);
  130 extern dtrace_nfsclient_attrcache_flush_probe_func_t
  131     dtrace_nfsclient_attrcache_flush_done_probe;
  132 extern dtrace_nfsclient_attrcache_flush_probe_func_t
  133     dtrace_nfscl_attrcache_flush_done_probe;
  134 
  135 typedef void (*dtrace_nfsclient_attrcache_get_hit_probe_func_t)(uint32_t,
  136     struct vnode *, struct vattr *);
  137 extern dtrace_nfsclient_attrcache_get_hit_probe_func_t
  138     dtrace_nfsclient_attrcache_get_hit_probe;
  139 extern dtrace_nfsclient_attrcache_get_hit_probe_func_t
  140     dtrace_nfscl_attrcache_get_hit_probe;
  141 
  142 typedef void (*dtrace_nfsclient_attrcache_get_miss_probe_func_t)(uint32_t,
  143     struct vnode *);
  144 extern dtrace_nfsclient_attrcache_get_miss_probe_func_t
  145     dtrace_nfsclient_attrcache_get_miss_probe;
  146 extern dtrace_nfsclient_attrcache_get_miss_probe_func_t
  147     dtrace_nfscl_attrcache_get_miss_probe;
  148 
  149 typedef void (*dtrace_nfsclient_attrcache_load_probe_func_t)(uint32_t,
  150     struct vnode *, struct vattr *, int);
  151 extern dtrace_nfsclient_attrcache_load_probe_func_t
  152     dtrace_nfsclient_attrcache_load_done_probe;
  153 extern dtrace_nfsclient_attrcache_load_probe_func_t
  154     dtrace_nfscl_attrcache_load_done_probe;
  155 
  156 /* dtnfsclient NFSv[234] RPC provider hooks. */
  157 typedef void (*dtrace_nfsclient_nfs23_start_probe_func_t)(uint32_t,
  158     struct vnode *, struct mbuf *, struct ucred *, int);
  159 extern dtrace_nfsclient_nfs23_start_probe_func_t
  160     dtrace_nfsclient_nfs23_start_probe;
  161 extern dtrace_nfsclient_nfs23_start_probe_func_t
  162     dtrace_nfscl_nfs234_start_probe;
  163 
  164 typedef void (*dtrace_nfsclient_nfs23_done_probe_func_t)(uint32_t,
  165     struct vnode *, struct mbuf *, struct ucred *, int, int);
  166 extern dtrace_nfsclient_nfs23_done_probe_func_t
  167     dtrace_nfsclient_nfs23_done_probe;
  168 extern dtrace_nfsclient_nfs23_done_probe_func_t
  169     dtrace_nfscl_nfs234_done_probe;
  170 
  171 /* IO Provider hooks, really hook into devstat */
  172 typedef void (*dtrace_io_start_probe_func_t)(uint32_t, struct bio *,
  173                                              struct devstat *);
  174 extern dtrace_io_start_probe_func_t dtrace_io_start_probe;
  175 
  176 typedef void (*dtrace_io_done_probe_func_t)(uint32_t, struct bio *,
  177                                             struct devstat *);
  178 extern dtrace_io_done_probe_func_t dtrace_io_done_probe;
  179 
  180 typedef void (*dtrace_io_wait_start_probe_func_t)(uint32_t, uintptr_t *, 
  181                                                   struct devstat *);
  182 extern dtrace_io_wait_start_probe_func_t dtrace_io_wait_start_probe;
  183 
  184 typedef void (*dtrace_io_wait_done_probe_func_t)(uint32_t, uintptr_t *, 
  185                                                  struct devstat *);
  186 extern dtrace_io_wait_done_probe_func_t dtrace_io_wait_done_probe;
  187 
  188 /*
  189  * Functions which allow the dtrace module to check that the kernel 
  190  * hooks have been compiled with sufficient space for it's private
  191  * structures.
  192  */
  193 size_t  kdtrace_proc_size(void);
  194 size_t  kdtrace_thread_size(void);
  195 
  196 /*
  197  * OpenSolaris compatible time functions returning nanoseconds.
  198  * On OpenSolaris these return hrtime_t which we define as uint64_t.
  199  */
  200 uint64_t        dtrace_gethrtime(void);
  201 uint64_t        dtrace_gethrestime(void);
  202 
  203 #endif /* _SYS_DTRACE_BSD_H */

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