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mirror of https://git.FreeBSD.org/src.git synced 2024-12-24 11:29:10 +00:00
freebsd/sys/netinet/sctp_dtrace_declare.h
Attilio Rao 54366c0bd7 - For kernel compiled only with KDTRACE_HOOKS and not any lock debugging
option, unbreak the lock tracing release semantic by embedding
  calls to LOCKSTAT_PROFILE_RELEASE_LOCK() direclty in the inlined
  version of the releasing functions for mutex, rwlock and sxlock.
  Failing to do so skips the lockstat_probe_func invokation for
  unlocking.
- As part of the LOCKSTAT support is inlined in mutex operation, for
  kernel compiled without lock debugging options, potentially every
  consumer must be compiled including opt_kdtrace.h.
  Fix this by moving KDTRACE_HOOKS into opt_global.h and remove the
  dependency by opt_kdtrace.h for all files, as now only KDTRACE_FRAMES
  is linked there and it is only used as a compile-time stub [0].

[0] immediately shows some new bug as DTRACE-derived support for debug
in sfxge is broken and it was never really tested.  As it was not
including correctly opt_kdtrace.h before it was never enabled so it
was kept broken for a while.  Fix this by using a protection stub,
leaving sfxge driver authors the responsibility for fixing it
appropriately [1].

Sponsored by:	EMC / Isilon storage division
Discussed with:	rstone
[0] Reported by:	rstone
[1] Discussed with:	philip
2013-11-25 07:38:45 +00:00

80 lines
2.8 KiB
C

/*-
* Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
* Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* a) Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* b) Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the distribution.
*
* c) Neither the name of Cisco Systems, Inc. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#ifndef _NETINET_SCTP_DTRACE_DECLARE_H_
#define _NETINET_SCTP_DTRACE_DECLARE_H_
#include <sys/kernel.h>
#include <sys/sdt.h>
/* Declare the SCTP provider */
SDT_PROVIDER_DECLARE(sctp);
/* The probes we have so far: */
/* One to track a net's cwnd */
/* initial */
SDT_PROBE_DECLARE(sctp, cwnd, net, init);
/* update at a ack -- increase */
SDT_PROBE_DECLARE(sctp, cwnd, net, ack);
/* update at a fast retransmit -- decrease */
SDT_PROBE_DECLARE(sctp, cwnd, net, fr);
/* update at a time-out -- decrease */
SDT_PROBE_DECLARE(sctp, cwnd, net, to);
/* update at a burst-limit -- decrease */
SDT_PROBE_DECLARE(sctp, cwnd, net, bl);
/* update at a ECN -- decrease */
SDT_PROBE_DECLARE(sctp, cwnd, net, ecn);
/* update at a Packet-Drop -- decrease */
SDT_PROBE_DECLARE(sctp, cwnd, net, pd);
/* Rttvar probe declaration */
SDT_PROBE_DECLARE(sctp, cwnd, net, rttvar);
SDT_PROBE_DECLARE(sctp, cwnd, net, rttstep);
/* One to track an associations rwnd */
SDT_PROBE_DECLARE(sctp, rwnd, assoc, val);
/* One to track a net's flight size */
SDT_PROBE_DECLARE(sctp, flightsize, net, val);
/* One to track an associations flight size */
SDT_PROBE_DECLARE(sctp, flightsize, assoc, val);
#endif