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KeReleaseSpinLockForDpc function (wdm.h)
The KeReleaseSpinLockForDpc routine releases a spin lock that was acquired by calling KeAcquireSpinLockForDpc.
Syntax
VOID KeReleaseSpinLockForDpc(
[in, out] PKSPIN_LOCK SpinLock,
[in] KIRQL OldIrql
);
Parameters
[in, out] SpinLock
Pointer to the spin lock that KeAcquireSpinLockForDpc acquired.
[in] OldIrql
Specifies the IRQL that was current when the spin lock was acquired. Specify the value returned by KeAcquireSpinLockForDpc.
Return value
None
Remarks
For more information about spin locks, see Spin Locks.
If OldIrql = PASSIVE_LEVEL, KeReleaseSpinLockForDpc lowers the current IRQL to PASSIVE_LEVEL. If OldIrql = DISPATCH_LEVEL, KeReleaseSpinLockForDpc does not change the current IRQL.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Available in Windows Vista and later versions of Windows. |
| Target Platform | Universal |
| Header | wdm.h (include Wdm.h, Ntddk.h, Ntifs.h) |
| Library | NtosKrnl.lib |
| DLL | NtosKrnl.exe |
| IRQL | See Remarks section. |
| DDI compliance rules | HwStorPortProhibitedDDIs(storport) |
See also
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