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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: head/sys/sys/dtrace_bsd.h 259905 2013-12-26 03:19:08Z 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 /*
   43  * Cyclic clock function type definition used to hook the cyclic
   44  * subsystem into the appropriate timer interrupt.
   45  */
   46 typedef void (*cyclic_clock_func_t)(struct trapframe *);
   47 extern cyclic_clock_func_t      cyclic_clock_func;
   48 
   49 void clocksource_cyc_set(const struct bintime *t);
   50 
   51 /*
   52  * The dtrace module handles traps that occur during a DTrace probe.
   53  * This type definition is used in the trap handler to provide a
   54  * hook for the dtrace module to register it's handler with.
   55  */
   56 typedef int (*dtrace_trap_func_t)(struct trapframe *, u_int);
   57 
   58 int     dtrace_trap(struct trapframe *, u_int);
   59 
   60 extern dtrace_trap_func_t       dtrace_trap_func;
   61 
   62 /* Used by the machine dependent trap() code. */
   63 typedef int (*dtrace_invop_func_t)(uintptr_t, uintptr_t *, uintptr_t);
   64 typedef void (*dtrace_doubletrap_func_t)(void);
   65 
   66 /* Global variables in trap.c */
   67 extern  dtrace_invop_func_t     dtrace_invop_func;
   68 extern  dtrace_doubletrap_func_t        dtrace_doubletrap_func;
   69 
   70 /* Pid provider hooks */
   71 typedef int (*dtrace_pid_probe_ptr_t)(struct reg *);
   72 extern  dtrace_pid_probe_ptr_t  dtrace_pid_probe_ptr;
   73 typedef int (*dtrace_return_probe_ptr_t)(struct reg *);
   74 extern  dtrace_return_probe_ptr_t       dtrace_return_probe_ptr;
   75 
   76 /* Virtual time hook function type. */
   77 typedef void (*dtrace_vtime_switch_func_t)(struct thread *);
   78 
   79 extern int                      dtrace_vtime_active;
   80 extern dtrace_vtime_switch_func_t       dtrace_vtime_switch_func;
   81 
   82 /* The fasttrap module hooks into the fork, exit and exit. */
   83 typedef void (*dtrace_fork_func_t)(struct proc *, struct proc *);
   84 typedef void (*dtrace_execexit_func_t)(struct proc *);
   85 
   86 /* Global variable in kern_fork.c */
   87 extern dtrace_fork_func_t       dtrace_fasttrap_fork;
   88 
   89 /* Global variable in kern_exec.c */
   90 extern dtrace_execexit_func_t   dtrace_fasttrap_exec;
   91 
   92 /* Global variable in kern_exit.c */
   93 extern dtrace_execexit_func_t   dtrace_fasttrap_exit;
   94 
   95 /* The dtmalloc provider hooks into malloc. */
   96 typedef void (*dtrace_malloc_probe_func_t)(u_int32_t, uintptr_t arg0,
   97     uintptr_t arg1, uintptr_t arg2, uintptr_t arg3, uintptr_t arg4);
   98 
   99 extern dtrace_malloc_probe_func_t   dtrace_malloc_probe;
  100 
  101 /* dtnfsclient NFSv[34] access cache provider hooks. */
  102 typedef void (*dtrace_nfsclient_accesscache_flush_probe_func_t)(uint32_t,
  103     struct vnode *);
  104 extern dtrace_nfsclient_accesscache_flush_probe_func_t
  105     dtrace_nfsclient_accesscache_flush_done_probe;
  106 extern dtrace_nfsclient_accesscache_flush_probe_func_t
  107     dtrace_nfscl_accesscache_flush_done_probe;
  108 
  109 typedef void (*dtrace_nfsclient_accesscache_get_probe_func_t)(uint32_t,
  110     struct vnode *, uid_t, uint32_t);
  111 extern dtrace_nfsclient_accesscache_get_probe_func_t
  112     dtrace_nfsclient_accesscache_get_hit_probe,
  113     dtrace_nfsclient_accesscache_get_miss_probe;
  114 extern dtrace_nfsclient_accesscache_get_probe_func_t
  115     dtrace_nfscl_accesscache_get_hit_probe,
  116     dtrace_nfscl_accesscache_get_miss_probe;
  117 
  118 typedef void (*dtrace_nfsclient_accesscache_load_probe_func_t)(uint32_t,
  119     struct vnode *, uid_t, uint32_t, int);
  120 extern dtrace_nfsclient_accesscache_load_probe_func_t
  121     dtrace_nfsclient_accesscache_load_done_probe;
  122 extern dtrace_nfsclient_accesscache_load_probe_func_t
  123     dtrace_nfscl_accesscache_load_done_probe;
  124 
  125 /* dtnfsclient NFSv[234] attribute cache provider hooks. */
  126 typedef void (*dtrace_nfsclient_attrcache_flush_probe_func_t)(uint32_t,
  127     struct vnode *);
  128 extern dtrace_nfsclient_attrcache_flush_probe_func_t
  129     dtrace_nfsclient_attrcache_flush_done_probe;
  130 extern dtrace_nfsclient_attrcache_flush_probe_func_t
  131     dtrace_nfscl_attrcache_flush_done_probe;
  132 
  133 typedef void (*dtrace_nfsclient_attrcache_get_hit_probe_func_t)(uint32_t,
  134     struct vnode *, struct vattr *);
  135 extern dtrace_nfsclient_attrcache_get_hit_probe_func_t
  136     dtrace_nfsclient_attrcache_get_hit_probe;
  137 extern dtrace_nfsclient_attrcache_get_hit_probe_func_t
  138     dtrace_nfscl_attrcache_get_hit_probe;
  139 
  140 typedef void (*dtrace_nfsclient_attrcache_get_miss_probe_func_t)(uint32_t,
  141     struct vnode *);
  142 extern dtrace_nfsclient_attrcache_get_miss_probe_func_t
  143     dtrace_nfsclient_attrcache_get_miss_probe;
  144 extern dtrace_nfsclient_attrcache_get_miss_probe_func_t
  145     dtrace_nfscl_attrcache_get_miss_probe;
  146 
  147 typedef void (*dtrace_nfsclient_attrcache_load_probe_func_t)(uint32_t,
  148     struct vnode *, struct vattr *, int);
  149 extern dtrace_nfsclient_attrcache_load_probe_func_t
  150     dtrace_nfsclient_attrcache_load_done_probe;
  151 extern dtrace_nfsclient_attrcache_load_probe_func_t
  152     dtrace_nfscl_attrcache_load_done_probe;
  153 
  154 /* dtnfsclient NFSv[234] RPC provider hooks. */
  155 typedef void (*dtrace_nfsclient_nfs23_start_probe_func_t)(uint32_t,
  156     struct vnode *, struct mbuf *, struct ucred *, int);
  157 extern dtrace_nfsclient_nfs23_start_probe_func_t
  158     dtrace_nfsclient_nfs23_start_probe;
  159 extern dtrace_nfsclient_nfs23_start_probe_func_t
  160     dtrace_nfscl_nfs234_start_probe;
  161 
  162 typedef void (*dtrace_nfsclient_nfs23_done_probe_func_t)(uint32_t,
  163     struct vnode *, struct mbuf *, struct ucred *, int, int);
  164 extern dtrace_nfsclient_nfs23_done_probe_func_t
  165     dtrace_nfsclient_nfs23_done_probe;
  166 extern dtrace_nfsclient_nfs23_done_probe_func_t
  167     dtrace_nfscl_nfs234_done_probe;
  168 
  169 /*
  170  * Functions which allow the dtrace module to check that the kernel 
  171  * hooks have been compiled with sufficient space for it's private
  172  * structures.
  173  */
  174 size_t  kdtrace_proc_size(void);
  175 size_t  kdtrace_thread_size(void);
  176 
  177 /*
  178  * OpenSolaris compatible time functions returning nanoseconds.
  179  * On OpenSolaris these return hrtime_t which we define as uint64_t.
  180  */
  181 uint64_t        dtrace_gethrtime(void);
  182 uint64_t        dtrace_gethrestime(void);
  183 
  184 #endif /* _SYS_DTRACE_BSD_H */

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