2 * Copyright 2008-2009 Stacey Son <sson@FreeBSD.org>
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 #include <sys/cdefs.h>
27 __FBSDID("$FreeBSD$");
29 #include <sys/param.h>
30 #include <sys/systm.h>
32 #include <sys/lockstat.h>
36 SDT_PROVIDER_DEFINE(lockstat);
38 SDT_PROBE_DEFINE1(lockstat, , , adaptive__acquire, "struct mtx *");
39 SDT_PROBE_DEFINE1(lockstat, , , adaptive__release, "struct mtx *");
40 SDT_PROBE_DEFINE2(lockstat, , , adaptive__spin, "struct mtx *", "uint64_t");
41 SDT_PROBE_DEFINE2(lockstat, , , adaptive__block, "struct mtx *", "uint64_t");
43 SDT_PROBE_DEFINE1(lockstat, , , spin__acquire, "struct mtx *");
44 SDT_PROBE_DEFINE1(lockstat, , , spin__release, "struct mtx *");
45 SDT_PROBE_DEFINE2(lockstat, , , spin__spin, "struct mtx *", "uint64_t");
47 SDT_PROBE_DEFINE2(lockstat, , , rw__acquire, "struct rwlock *", "int");
48 SDT_PROBE_DEFINE2(lockstat, , , rw__release, "struct rwlock *", "int");
49 SDT_PROBE_DEFINE5(lockstat, , , rw__block, "struct rwlock *", "uint64_t", "int",
51 SDT_PROBE_DEFINE2(lockstat, , , rw__spin, "struct rwlock *", "uint64_t");
52 SDT_PROBE_DEFINE1(lockstat, , , rw__upgrade, "struct rwlock *");
53 SDT_PROBE_DEFINE1(lockstat, , , rw__downgrade, "struct rwlock *");
55 SDT_PROBE_DEFINE2(lockstat, , , sx__acquire, "struct sx *", "int");
56 SDT_PROBE_DEFINE2(lockstat, , , sx__release, "struct sx *", "int");
57 SDT_PROBE_DEFINE5(lockstat, , , sx__block, "struct sx *", "uint64_t", "int",
59 SDT_PROBE_DEFINE2(lockstat, , , sx__spin, "struct sx *", "uint64_t");
60 SDT_PROBE_DEFINE1(lockstat, , , sx__upgrade, "struct sx *");
61 SDT_PROBE_DEFINE1(lockstat, , , sx__downgrade, "struct sx *");
63 SDT_PROBE_DEFINE2(lockstat, , , thread__spin, "struct mtx *", "uint64_t");
65 volatile int __read_frequently lockstat_enabled;
68 lockstat_nsecs(struct lock_object *lo)
73 if (!lockstat_enabled)
75 if ((lo->lo_flags & LO_NOPROFILE) != 0)
79 ns = bt.sec * (uint64_t)1000000000;
80 ns += ((uint64_t)1000000000 * (uint32_t)(bt.frac >> 32)) >> 32;