title "Global SpinLock declerations"
;++
;
;Copyright (c) 1991 Microsoft Corporation
;
;Module Name:
;
; splocks.asm
;
;Abstract:
;
; All global spinlocks in the kernel image are declared in this
; module. This is done so that each spinlock can be spaced out
; sufficiently to guaarantee that the L2 cache does not thrash
; by having a spinlock and another high use variable in the same
; cache line.
;
;Author:
;
; Ken Reneris (kenr) 13-Jan-1992
;
;Revision History:
;
;--
.386p
.xlist
ifdef NT_UP
PADLOCKS equ 4
_DATA SEGMENT PARA PUBLIC 'DATA'
else
PADLOCKS equ 128
_DATA SEGMENT PAGE PUBLIC 'DATA'
endif
SPINLOCK macro SpinLockName
align PADLOCKS
public SpinLockName
SpinLockName dd 0
endm
ULONG macro VariableName
align PADLOCKS
public VariableName
VariableName dd 0
endm
;
; Static SpinLocks from ntos\cc\cachedat.c
;
SPINLOCK _CcMasterSpinLock
SPINLOCK _CcWorkQueueSpinLock
SPINLOCK _CcVacbSpinLock
SPINLOCK _CcDeferredWriteSpinLock
SPINLOCK _CcDebugTraceLock
SPINLOCK _CcBcbSpinLock
;
; Static SpinLocks from ntos\ex
;
SPINLOCK _NonPagedPoolLock ; pool.c
SPINLOCK _ExpResourceSpinLock ; resource.c
;
; Static SpinLocks from ntos\io\iodata.c
;
SPINLOCK _IopCompletionLock
SPINLOCK _IopCancelSpinLock
SPINLOCK _IopVpbSpinLock
SPINLOCK _IopDatabaseLock
SPINLOCK _IopErrorLogLock
SPINLOCK _IopTimerLock
SPINLOCK _IoStatisticsLock
;
; Static SpinLocks from ntos\kd\kdlock.c
;
SPINLOCK _KdpDebuggerLock
;
; Static SpinLocks from ntos\ke\kernldat.c
;
SPINLOCK _KiContextSwapLock
SPINLOCK _KiDispatcherLock
SPINLOCK _KiFreezeExecutionLock
SPINLOCK _KiFreezeLockBackup
ULONG _KiHardwareTrigger
SPINLOCK _KiProfileLock
;
; Static SpinLocks from ntos\mm\miglobal.c
;
SPINLOCK _MmPfnLock
SPINLOCK _MmSystemSpaceLock
;
; Static SpinLocks from ntos\ps\psinit.c
;
SPINLOCK _PspEventPairLock
SPINLOCK _PsLoadedModuleSpinLock
;
; Static SpinLocks from ntos\fsrtl\fsrtlp.c
;
SPINLOCK _FsRtlStrucSupSpinLock ; fsrtlp.c
;
; Static SpinLocks from base\fs\ntfs
;
SPINLOCK _NtfsStructLock
;
; Static SpinLocks from net\sockets\winsock2\wsp\afdsys
;
SPINLOCK _AfdWorkQueueSpinLock
;
; These variables are updated frequently and under control of the dispatcher
; database lock. They are defined in a single cache line to reduce false
; sharing in MP systems.
;
; KiIdleSummary - This is the set of processors which are idle. It is
; used by the ready thread code to speed up the search for a thread
; to preempt when a thread becomes runnable.
;
align PADLOCKS
public _KiIdleSummary
_KiIdleSummary dd 0
;
; KiIdleSMTSummary - In multi threaded processors, this is the set of
; idle processors in which all the logical processors that make up a
; physical processor are idle. That is, this is the set of logical
; processors in completely idle physical processors.
;
public _KiIdleSMTSummary
_KiIdleSMTSummary dd 0
;
; KiReadySummary - This is the set of dispatcher ready queues that are not
; empty. A member is set in this set for each priority that has one or
; more entries in its respective dispatcher ready queues.
;
public _KiReadySummary
_KiReadySummary dd 0
;
; PoSleepingSummary - Set of processors which currently sleep (ie stop)
; when idle.
;
public _PoSleepingSummary
_PoSleepingSummary dd 0
;
; KiTbFlushTimeStamp - This is the TB flush entire time stamp counter.
;
; This variable is in it own cache line to reduce false sharing on MP systems.
;
align PADLOCKS
public _KiTbFlushTimeStamp
_KiTbFlushTimeStamp dd 0
;
; These variables are referenced together and are defined in a single cache
; line to reduce sharing on MP systems.
;
; IopLookasideIrpFloat - This is the number of IRPs that are currently
; in progress that were allocated from a lookaside list.
;
align PADLOCKS
public _IopLookasideIrpFloat
_IopLookasideIrpFloat dd 0
;
; IopLookasideIrpLimit - This is the maximum number of IRPs that can be
; in progress that were allocated from a lookaside list.
;
public _IopLookasideIrpLimit
_IopLookasideIrpLimit dd 0
;
; These variables are referenced together and are defined in a single cache
; line to reduce sharing on MP systems.
;
; KeTickCount - This is the number of clock ticks that have occurred since
; the system was booted. This count is used to compute a millisecond
; tick counter.
;
align PADLOCKS
public _KeTickCount
_KeTickCount dd 0, 0, 0
;
; KeMaximumIncrement - This is the maximum time between clock interrupts
; in 100ns units that is supported by the host HAL.
;
public _KeMaximumIncrement
_KeMaximumIncrement dd 0
;
; KeTimeAdjustment - This is the actual number of 100ns units that are to
; be added to the system time at each interval timer interupt. This
; value is copied from KeTimeIncrement at system start up and can be
; later modified via the set system information service.
; timer table entries.
;
public _KeTimeAdjustment
_KeTimeAdjustment dd 0
;
; KiTickOffset - This is the number of 100ns units remaining before a tick
; is added to the tick count and the system time is updated.
;
public _KiTickOffset
_KiTickOffset dd 0
;
; These variables are referenced together and are defined in a single cache
; line to reduce sharing on MP systems.
;
; KiMaximumDpcQueueDepth - This is used to control how many DPCs can be
; queued before a DPC of medium importance will trigger a dispatch
; interrupt.
;
align PADLOCKS
public _KiMaximumDpcQueueDepth
_KiMaximumDpcQueueDepth dd 4
;
; KiMinimumDpcRate - This is the rate of DPC requests per clock tick that
; must be exceeded before DPC batching of medium importance DPCs
; will occur.
;
public _KiMinimumDpcRate
_KiMinimumDpcRate dd 3
;
; KiAdjustDpcThreshold - This is the threshold used by the clock interrupt
; routine to control the rate at which the processor's DPC queue depth
; is dynamically adjusted.
;
public _KiAdjustDpcThreshold
_KiAdjustDpcThreshold dd 20
;
; KiIdealDpcRate - This is used to control the aggressiveness of the DPC
; rate adjusting algorithm when decrementing the queue depth. As long
; as the DPC rate for the last tick is greater than this rate, the
; DPC queue depth will not be decremented.
;
public _KiIdealDpcRate
_KiIdealDpcRate dd 20
;
; These variables are referenced together and are defined in a single cache
; line to reduce sharing on MP systems.
;
; KeErrorMask - This is the value used to mask the error code passed to
; memory management on page faults.
;
align PADLOCKS
public _KeErrorMask
_KeErrorMask dd 1
;
; MmPaeErrMask - This is the value used to mask upper bits of a PAE error.
;
public _MmPaeErrMask
_MmPaeErrMask dd 0
;
; MmPaeMask - This is the value used to mask upper bits of a PAE PTE.
;
public _MmPaeMask
_MmPaeMask dq 0
;
; MmPfnDereferenceSListHead - This is used to store free blocks used for
; deferred PFN reference count releasing.
;
align PADLOCKS
public _MmPfnDereferenceSListHead
_MmPfnDereferenceSListHead dq 0
;
; MmPfnDeferredList - This is used to queue items that need reference count
; decrement processing.
;
align PADLOCKS
public _MmPfnDeferredList
_MmPfnDeferredList dd 0
;
; MmSystemLockPagesCount - This is the count of the number of locked pages
; in the system.
;
align PADLOCKS
public _MmSystemLockPagesCount
_MmSystemLockPagesCount dd 0
align PADLOCKS
_DATA ends
end