198 lines
5.0 KiB
ArmAsm
198 lines
5.0 KiB
ArmAsm
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// TITLE("High Frequency Spin Locks")
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//++
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//
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// Copyright (c) 1993 Microsoft Corporation
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//
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// Module Name:
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//
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// hifreqlk.s
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//
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// Abstract:
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//
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// This module contains storage for high frequency spin locks. Each
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// is allocated to a separate cache line.
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//
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// Author:
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//
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// David N. Cutler (davec) 25-Jun-1993
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//
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// Environment:
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//
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// Kernel mode.
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//
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// Revision History:
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//
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//--
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#include "ksmips.h"
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#if defined(NT_UP)
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#define ALIGN
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#else
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#define ALIGN .align 6
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#endif
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.sdata
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ALIGN
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.word 0
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.globl CcMasterSpinLock
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ALIGN
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CcMasterSpinLock: // cache manager master lock
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.word 0 //
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.globl CcVacbSpinLock
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ALIGN
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CcVacbSpinLock: // cache manager VACB lock
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.word 0
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.globl ExpResourceSpinLock
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ALIGN
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ExpResourceSpinLock: // resource package lock
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.word 0
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.globl IopCancelSpinLock
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ALIGN
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IopCancelSpinLock: // I/O cancel lock
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.word 0 //
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.globl IopCompletionLock
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ALIGN
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IopCompletionLock: // I/O completion lock
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.word 0 //
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.globl IopDatabaseLock
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ALIGN
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IopDatabaseLock: // I/O database lock
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.word 0 //
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.globl IopFastLockSpinLock
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ALIGN
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IopFastLockSpinLock: // fast I/O path lock
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.word 0 //
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.globl IopVpbSpinLock
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ALIGN
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IopVpbSpinLock: // I/O VPB lock
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.word 0 //
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.globl IoStatisticsLock
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ALIGN
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IoStatisticsLock: // I/O statistics lock
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.word 0 //
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.globl KiContextSwapLock
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ALIGN
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KiContextSwapLock: // context swap lock
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.word 0 //
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.globl KiDispatcherLock
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ALIGN
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KiDispatcherLock: // dispatcher database lock
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.word 0 //
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.globl KiSynchIrql
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KiSynchIrql: // synchronization IRQL
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.word SYNCH_LEVEL //
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.globl MmChargeCommitmentLock
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ALIGN
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MmChargeCommitmentLock: // charge commitment lock
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.word 0
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.globl MmPfnLock
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ALIGN
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MmPfnLock: // page frame database lock
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.word 0
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.globl NonPagedPoolLock
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ALIGN
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NonPagedPoolLock: // nonpage pool allocation lock
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.word 0
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//
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// KeTickCount - This is the number of clock ticks that have occurred since
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// the system was booted. This count is used to compute a millisecond
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// tick counter.
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//
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.align 6
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.globl KeTickCount
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KeTickCount: //
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.word 0, 0, 0
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//
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// KeMaximumIncrement - This is the maximum time between clock interrupts
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// in 100ns units that is supported by the host HAL.
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//
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.globl KeMaximumIncrement
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KeMaximumIncrement: //
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.word 0
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//
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// KeTimeAdjustment - This is the actual number of 100ns units that are to
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// be added to the system time at each interval timer interupt. This
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// value is copied from KeTimeIncrement at system start up and can be
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// later modified via the set system information service.
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// timer table entries.
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//
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.globl KeTimeAdjustment
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KeTimeAdjustment: //
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.word 0
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//
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// KiTickOffset - This is the number of 100ns units remaining before a tick
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// is added to the tick count and the system time is updated.
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//
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.globl KiTickOffset
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KiTickOffset: //
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.word 0
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//
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// KiMaximumDpcQueueDepth - This is used to control how many DPCs can be
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// queued before a DPC of medium importance will trigger a dispatch
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// interrupt.
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//
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.globl KiMaximumDpcQueueDepth
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KiMaximumDpcQueueDepth: //
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.word 4
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//
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// KiMinimumDpcRate - This is the rate of DPC requests per clock tick that
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// must be exceeded before DPC batching of medium importance DPCs
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// will occur.
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//
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.globl KiMinimumDpcRate
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KiMinimumDpcRate: //
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.word 3
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//
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// KiAdjustDpcThreshold - This is the threshold used by the clock interrupt
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// routine to control the rate at which the processor's DPC queue depth
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// is dynamically adjusted.
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//
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.globl KiAdjustDpcThreshold
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KiAdjustDpcThreshold: //
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.word 20
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//
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// KiIdealDpcRate - This is used to control the aggressiveness of the DPC
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// rate adjusting algorithm when decrementing the queue depth. As long
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// as the DPC rate for the last tick is greater than this rate, the
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// DPC queue depth will not be decremented.
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//
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.globl KiIdealDpcRate
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KiIdealDpcRate: //
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.word 20
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