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/lockstat.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2008-2009 Stacey Son <sson@FreeBSD.org> 
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   18  * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
   19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   25  * SUCH DAMAGE.
   26  *
   27  * $FreeBSD$
   28  */
   29 
   30 /*
   31  * DTrace lockstat provider definitions
   32  */
   33 
   34 #ifndef _SYS_LOCKSTAT_H
   35 #define _SYS_LOCKSTAT_H
   36 
   37 #ifdef _KERNEL
   38 
   39 #include <sys/param.h>
   40 #include <sys/queue.h>
   41 #include <sys/sdt.h>
   42 
   43 SDT_PROVIDER_DECLARE(lockstat);
   44 
   45 SDT_PROBE_DECLARE(lockstat, , , adaptive__acquire);
   46 SDT_PROBE_DECLARE(lockstat, , , adaptive__release);
   47 SDT_PROBE_DECLARE(lockstat, , , adaptive__spin);
   48 SDT_PROBE_DECLARE(lockstat, , , adaptive__block);
   49 
   50 SDT_PROBE_DECLARE(lockstat, , , spin__acquire);
   51 SDT_PROBE_DECLARE(lockstat, , , spin__release);
   52 SDT_PROBE_DECLARE(lockstat, , , spin__spin);
   53 
   54 SDT_PROBE_DECLARE(lockstat, , , rw__acquire);
   55 SDT_PROBE_DECLARE(lockstat, , , rw__release);
   56 SDT_PROBE_DECLARE(lockstat, , , rw__block);
   57 SDT_PROBE_DECLARE(lockstat, , , rw__spin);
   58 SDT_PROBE_DECLARE(lockstat, , , rw__upgrade);
   59 SDT_PROBE_DECLARE(lockstat, , , rw__downgrade);
   60 
   61 SDT_PROBE_DECLARE(lockstat, , , sx__acquire);
   62 SDT_PROBE_DECLARE(lockstat, , , sx__release);
   63 SDT_PROBE_DECLARE(lockstat, , , sx__block);
   64 SDT_PROBE_DECLARE(lockstat, , , sx__spin);
   65 SDT_PROBE_DECLARE(lockstat, , , sx__upgrade);
   66 SDT_PROBE_DECLARE(lockstat, , , sx__downgrade);
   67 
   68 SDT_PROBE_DECLARE(lockstat, , , lockmgr__acquire);
   69 SDT_PROBE_DECLARE(lockstat, , , lockmgr__release);
   70 SDT_PROBE_DECLARE(lockstat, , , lockmgr__disown);
   71 SDT_PROBE_DECLARE(lockstat, , , lockmgr__block);
   72 SDT_PROBE_DECLARE(lockstat, , , lockmgr__upgrade);
   73 SDT_PROBE_DECLARE(lockstat, , , lockmgr__downgrade);
   74 
   75 SDT_PROBE_DECLARE(lockstat, , , thread__spin);
   76 
   77 #define LOCKSTAT_WRITER         0
   78 #define LOCKSTAT_READER         1
   79 
   80 extern volatile bool lockstat_enabled;
   81 
   82 #ifdef KDTRACE_HOOKS
   83 
   84 #define LOCKSTAT_RECORD0(probe, lp)                                     \
   85         SDT_PROBE1(lockstat, , , probe, lp)
   86 
   87 #define LOCKSTAT_RECORD1(probe, lp, arg1)                               \
   88         SDT_PROBE2(lockstat, , , probe, lp, arg1)
   89 
   90 #define LOCKSTAT_RECORD2(probe, lp, arg1, arg2)                         \
   91         SDT_PROBE3(lockstat, , , probe, lp, arg1, arg2)
   92 
   93 #define LOCKSTAT_RECORD3(probe, lp, arg1, arg2, arg3)                   \
   94         SDT_PROBE4(lockstat, , , probe, lp, arg1, arg2, arg3)
   95 
   96 #define LOCKSTAT_RECORD4(probe, lp, arg1, arg2, arg3, arg4)             \
   97         SDT_PROBE5(lockstat, , , probe, lp, arg1, arg2, arg3, arg4)
   98 
   99 #define LOCKSTAT_PROFILE_OBTAIN_LOCK_SUCCESS(probe, lp, c, wt, f, l) do { \
  100         lock_profile_obtain_lock_success(&(lp)->lock_object, false, c, wt, f, l); \
  101         LOCKSTAT_RECORD0(probe, lp);                                    \
  102 } while (0)
  103 
  104 #define LOCKSTAT_PROFILE_OBTAIN_SPIN_LOCK_SUCCESS(probe, lp, c, wt, f, l) do { \
  105         lock_profile_obtain_lock_success(&(lp)->lock_object, true, c, wt, f, l); \
  106         LOCKSTAT_RECORD0(probe, lp);                                    \
  107 } while (0)
  108 
  109 #define LOCKSTAT_PROFILE_OBTAIN_RWLOCK_SUCCESS(probe, lp, c, wt, f, l, a) do { \
  110         lock_profile_obtain_lock_success(&(lp)->lock_object, false, c, wt, f, l); \
  111         LOCKSTAT_RECORD1(probe, lp, a);                                 \
  112 } while (0)
  113 
  114 #define LOCKSTAT_PROFILE_RELEASE_LOCK(probe, lp) do {                   \
  115         lock_profile_release_lock(&(lp)->lock_object, false);           \
  116         LOCKSTAT_RECORD0(probe, lp);                                    \
  117 } while (0)
  118 
  119 #define LOCKSTAT_PROFILE_RELEASE_SPIN_LOCK(probe, lp) do {              \
  120         lock_profile_release_lock(&(lp)->lock_object, true);            \
  121         LOCKSTAT_RECORD0(probe, lp);                                    \
  122 } while (0)
  123 
  124 #define LOCKSTAT_PROFILE_RELEASE_RWLOCK(probe, lp, a) do {              \
  125         lock_profile_release_lock(&(lp)->lock_object, false);           \
  126         LOCKSTAT_RECORD1(probe, lp, a);                                 \
  127 } while (0)
  128 
  129 #define LOCKSTAT_PROFILE_ENABLED(probe)         __predict_false(lockstat_enabled)
  130 
  131 struct lock_object;
  132 uint64_t lockstat_nsecs(struct lock_object *);
  133 
  134 #else /* !KDTRACE_HOOKS */
  135 
  136 #define LOCKSTAT_RECORD0(probe, lp)
  137 #define LOCKSTAT_RECORD1(probe, lp, arg1)
  138 #define LOCKSTAT_RECORD2(probe, lp, arg1, arg2)
  139 #define LOCKSTAT_RECORD3(probe, lp, arg1, arg2, arg3)
  140 #define LOCKSTAT_RECORD4(probe, lp, arg1, arg2, arg3, arg4)
  141 
  142 #define LOCKSTAT_PROFILE_OBTAIN_LOCK_SUCCESS(probe, lp, c, wt, f, l)    \
  143         lock_profile_obtain_lock_success(&(lp)->lock_object, false, c, wt, f, l)
  144 
  145 #define LOCKSTAT_PROFILE_OBTAIN_SPIN_LOCK_SUCCESS(probe, lp, c, wt, f, l)       \
  146         lock_profile_obtain_lock_success(&(lp)->lock_object, true, c, wt, f, l)
  147 
  148 #define LOCKSTAT_PROFILE_OBTAIN_RWLOCK_SUCCESS(probe, lp, c, wt, f, l, a) \
  149         LOCKSTAT_PROFILE_OBTAIN_LOCK_SUCCESS(probe, lp, c, wt, f, l)
  150 
  151 #define LOCKSTAT_PROFILE_RELEASE_LOCK(probe, lp)                        \
  152         lock_profile_release_lock(&(lp)->lock_object, false)
  153 
  154 #define LOCKSTAT_PROFILE_RELEASE_SPIN_LOCK(probe, lp)                   \
  155         lock_profile_release_lock(&(lp)->lock_object, true)
  156 
  157 #define LOCKSTAT_PROFILE_RELEASE_RWLOCK(probe, lp, a)                   \
  158         LOCKSTAT_PROFILE_RELEASE_LOCK(probe, lp)
  159 
  160 #define LOCKSTAT_PROFILE_ENABLED(probe)         0
  161 
  162 #endif /* !KDTRACE_HOOKS */
  163 
  164 #endif /* _KERNEL */
  165 #endif /* _SYS_LOCKSTAT_H */

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