a5aedd68b4
adds probes for mutexes, reader/writer and shared/exclusive locks to gather contention statistics and other locking information for dtrace scripts, the lockstat(1M) command and other potential consumers. Reviewed by: attilio jhb jb Approved by: gnn (mentor)
76 lines
2.4 KiB
C
76 lines
2.4 KiB
C
/*
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* Copyright (C) 2008 John Birrell <jb@freebsd.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/cdefs.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/errno.h>
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static int
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dtraceall_modevent(module_t mod __unused, int type, void *data __unused)
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{
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int error = 0;
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switch (type) {
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case MOD_LOAD:
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break;
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case MOD_UNLOAD:
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break;
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case MOD_SHUTDOWN:
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break;
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default:
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error = EOPNOTSUPP;
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break;
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}
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return (error);
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}
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DEV_MODULE(dtraceall, dtraceall_modevent, NULL);
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MODULE_VERSION(dtraceall, 1);
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/* All the DTrace modules should be dependencies here: */
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MODULE_DEPEND(dtraceall, cyclic, 1, 1, 1);
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MODULE_DEPEND(dtraceall, opensolaris, 1, 1, 1);
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MODULE_DEPEND(dtraceall, dtrace, 1, 1, 1);
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MODULE_DEPEND(dtraceall, dtmalloc, 1, 1, 1);
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MODULE_DEPEND(dtraceall, dtnfsclient, 1, 1, 1);
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#if defined(__amd64__) || defined(__i386__)
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MODULE_DEPEND(dtraceall, fbt, 1, 1, 1);
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#endif
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MODULE_DEPEND(dtraceall, lockstat, 1, 1, 1);
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MODULE_DEPEND(dtraceall, sdt, 1, 1, 1);
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MODULE_DEPEND(dtraceall, systrace, 1, 1, 1);
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MODULE_DEPEND(dtraceall, profile, 1, 1, 1);
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