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