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freebsd-dev/sys/sys/lockstat.h
Attilio Rao 77befd1d23 Revert the approach for skipping lockstat_probe_func call when doing 
lock_success/lock_failure, introduced in r228424, by directly skipping
in dtrace_probe.

This mainly helps in avoiding namespace pollution and thus lockstat.h
dependency by systm.h.

As an added bonus, this also helps in MFC case.
Reviewed by:	avg
MFC after:	3 months (or never)
X-MFC:		r228424
2011-12-12 23:29:32 +00:00

221 lines
7.0 KiB
C
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/*-
* Copyright (c) 2008-2009 Stacey Son <sson@FreeBSD.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY AUTHOR 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 AUTHOR 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.
*
* $FreeBSD$
*/
/*
* DTrace lockstat provider definitions
*
*/
#ifndef _SYS_LOCKSTAT_H
#define _SYS_LOCKSTAT_H
#ifdef _KERNEL
/*
* Spin Locks
*/
#define LS_MTX_SPIN_LOCK_ACQUIRE 0
#define LS_MTX_SPIN_UNLOCK_RELEASE 1
#define LS_MTX_SPIN_LOCK_SPIN 2
/*
* Adaptive Locks
*/
#define LS_MTX_LOCK_ACQUIRE 3
#define LS_MTX_UNLOCK_RELEASE 4
#define LS_MTX_LOCK_SPIN 5
#define LS_MTX_LOCK_BLOCK 6
#define LS_MTX_TRYLOCK_ACQUIRE 7
/*
* Reader/Writer Locks
*/
#define LS_RW_RLOCK_ACQUIRE 8
#define LS_RW_RUNLOCK_RELEASE 9
#define LS_RW_WLOCK_ACQUIRE 10
#define LS_RW_WUNLOCK_RELEASE 11
#define LS_RW_RLOCK_SPIN 12
#define LS_RW_RLOCK_BLOCK 13
#define LS_RW_WLOCK_SPIN 14
#define LS_RW_WLOCK_BLOCK 15
#define LS_RW_TRYUPGRADE_UPGRADE 16
#define LS_RW_DOWNGRADE_DOWNGRADE 17
/*
* Shared/Exclusive Locks
*/
#define LS_SX_SLOCK_ACQUIRE 18
#define LS_SX_SUNLOCK_RELEASE 19
#define LS_SX_XLOCK_ACQUIRE 20
#define LS_SX_XUNLOCK_RELEASE 21
#define LS_SX_SLOCK_SPIN 22
#define LS_SX_SLOCK_BLOCK 23
#define LS_SX_XLOCK_SPIN 24
#define LS_SX_XLOCK_BLOCK 25
#define LS_SX_TRYUPGRADE_UPGRADE 26
#define LS_SX_DOWNGRADE_DOWNGRADE 27
/*
* Thread Locks
*/
#define LS_THREAD_LOCK_SPIN 28
/*
* Lockmanager Locks
* According to locking(9) Lockmgr locks are "Largely deprecated"
* so no support for these have been added in the lockstat provider.
*/
#define LS_NPROBES 29
#define LS_MTX_LOCK "mtx_lock"
#define LS_MTX_UNLOCK "mtx_unlock"
#define LS_MTX_SPIN_LOCK "mtx_lock_spin"
#define LS_MTX_SPIN_UNLOCK "mtx_unlock_spin"
#define LS_MTX_TRYLOCK "mtx_trylock"
#define LS_RW_RLOCK "rw_rlock"
#define LS_RW_WLOCK "rw_wlock"
#define LS_RW_RUNLOCK "rw_runlock"
#define LS_RW_WUNLOCK "rw_wunlock"
#define LS_RW_TRYUPGRADE "rw_try_upgrade"
#define LS_RW_DOWNGRADE "rw_downgrade"
#define LS_SX_SLOCK "sx_slock"
#define LS_SX_XLOCK "sx_xlock"
#define LS_SX_SUNLOCK "sx_sunlock"
#define LS_SX_XUNLOCK "sx_xunlock"
#define LS_SX_TRYUPGRADE "sx_try_upgrade"
#define LS_SX_DOWNGRADE "sx_downgrade"
#define LS_THREAD_LOCK "thread_lock"
#define LS_ACQUIRE "acquire"
#define LS_RELEASE "release"
#define LS_SPIN "spin"
#define LS_BLOCK "block"
#define LS_UPGRADE "upgrade"
#define LS_DOWNGRADE "downgrade"
#define LS_TYPE_ADAPTIVE "adaptive"
#define LS_TYPE_SPIN "spin"
#define LS_TYPE_THREAD "thread"
#define LS_TYPE_RW "rw"
#define LS_TYPE_SX "sx"
#define LSA_ACQUIRE (LS_TYPE_ADAPTIVE "-" LS_ACQUIRE)
#define LSA_RELEASE (LS_TYPE_ADAPTIVE "-" LS_RELEASE)
#define LSA_SPIN (LS_TYPE_ADAPTIVE "-" LS_SPIN)
#define LSA_BLOCK (LS_TYPE_ADAPTIVE "-" LS_BLOCK)
#define LSS_ACQUIRE (LS_TYPE_SPIN "-" LS_ACQUIRE)
#define LSS_RELEASE (LS_TYPE_SPIN "-" LS_RELEASE)
#define LSS_SPIN (LS_TYPE_SPIN "-" LS_SPIN)
#define LSR_ACQUIRE (LS_TYPE_RW "-" LS_ACQUIRE)
#define LSR_RELEASE (LS_TYPE_RW "-" LS_RELEASE)
#define LSR_BLOCK (LS_TYPE_RW "-" LS_BLOCK)
#define LSR_SPIN (LS_TYPE_RW "-" LS_SPIN)
#define LSR_UPGRADE (LS_TYPE_RW "-" LS_UPGRADE)
#define LSR_DOWNGRADE (LS_TYPE_RW "-" LS_DOWNGRADE)
#define LSX_ACQUIRE (LS_TYPE_SX "-" LS_ACQUIRE)
#define LSX_RELEASE (LS_TYPE_SX "-" LS_RELEASE)
#define LSX_BLOCK (LS_TYPE_SX "-" LS_BLOCK)
#define LSX_SPIN (LS_TYPE_SX "-" LS_SPIN)
#define LSX_UPGRADE (LS_TYPE_SX "-" LS_UPGRADE)
#define LSX_DOWNGRADE (LS_TYPE_SX "-" LS_DOWNGRADE)
#define LST_SPIN (LS_TYPE_THREAD "-" LS_SPIN)
/*
* The following must match the type definition of dtrace_probe. It is
* defined this way to avoid having to rely on CDDL code.
*/
extern uint32_t lockstat_probemap[LS_NPROBES];
typedef void (*lockstat_probe_func_t)(uint32_t, uintptr_t arg0, uintptr_t arg1,
uintptr_t arg2, uintptr_t arg3, uintptr_t arg4);
extern lockstat_probe_func_t lockstat_probe_func;
extern uint64_t lockstat_nsecs(void);
#ifdef KDTRACE_HOOKS
/*
* Macros to record lockstat probes.
*/
#define LOCKSTAT_RECORD4(probe, lp, arg1, arg2, arg3, arg4) do { \
uint32_t id; \
\
if ((id = lockstat_probemap[(probe)])) \
(*lockstat_probe_func)(id, (uintptr_t)(lp), (arg1), (arg2), \
(arg3), (arg4)); \
} while (0)
#define LOCKSTAT_RECORD(probe, lp, arg1) \
LOCKSTAT_RECORD4(probe, lp, arg1, 0, 0, 0)
#define LOCKSTAT_RECORD0(probe, lp) \
LOCKSTAT_RECORD4(probe, lp, 0, 0, 0, 0)
#define LOCKSTAT_RECORD1(probe, lp, arg1) \
LOCKSTAT_RECORD4(probe, lp, arg1, 0, 0, 0)
#define LOCKSTAT_RECORD2(probe, lp, arg1, arg2) \
LOCKSTAT_RECORD4(probe, lp, arg1, arg2, 0, 0)
#define LOCKSTAT_RECORD3(probe, lp, arg1, arg2, arg3) \
LOCKSTAT_RECORD4(probe, lp, arg1, arg2, arg3, 0)
#define LOCKSTAT_PROFILE_OBTAIN_LOCK_SUCCESS(probe, lp, c, wt, f, l) do { \
uint32_t id; \
\
lock_profile_obtain_lock_success(&(lp)->lock_object, c, wt, f, l); \
if ((id = lockstat_probemap[(probe)])) \
(*lockstat_probe_func)(id, (uintptr_t)(lp), 0, 0, 0, 0); \
} while (0)
#define LOCKSTAT_PROFILE_RELEASE_LOCK(probe, lp) do { \
uint32_t id; \
\
lock_profile_release_lock(&(lp)->lock_object); \
if ((id = lockstat_probemap[(probe)])) \
(*lockstat_probe_func)(id, (uintptr_t)(lp), 0, 0, 0, 0); \
} while (0)
#else /* !KDTRACE_HOOKS */
#define LOCKSTAT_RECORD(probe, lp, arg1)
#define LOCKSTAT_RECORD0(probe, lp)
#define LOCKSTAT_RECORD1(probe, lp, arg1)
#define LOCKSTAT_RECORD2(probe, lp, arg1, arg2)
#define LOCKSTAT_RECORD3(probe, lp, arg1, arg2, arg3)
#define LOCKSTAT_RECORD4(probe, lp, arg1, arg2, arg3, arg4)
#define LOCKSTAT_PROFILE_OBTAIN_LOCK_SUCCESS(probe, lp, c, wt, f, l) \
lock_profile_obtain_lock_success(&(lp)->lock_object, c, wt, f, l)
#define LOCKSTAT_PROFILE_RELEASE_LOCK(probe, lp) \
lock_profile_release_lock(&(lp)->lock_object)
#endif /* !KDTRACE_HOOKS */
#endif /* _KERNEL */
#endif /* _SYS_LOCKSTAT_H */
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