[PATCH 4/4] hal: Implement plain spinlock functions on top of DPC-level ones.
Zebediah Figura
z.figura12 at gmail.com
Sun Jan 27 20:45:34 CST 2019
Signed-off-by: Zebediah Figura <z.figura12 at gmail.com>
---
dlls/hal/Makefile.in | 1 +
dlls/hal/hal.c | 10 ++--------
2 files changed, 3 insertions(+), 8 deletions(-)
diff --git a/dlls/hal/Makefile.in b/dlls/hal/Makefile.in
index cc2620e921..63211a18d7 100644
--- a/dlls/hal/Makefile.in
+++ b/dlls/hal/Makefile.in
@@ -1,5 +1,6 @@
MODULE = hal.dll
IMPORTLIB = hal
+IMPORTS = ntoskrnl
C_SRCS = \
hal.c
diff --git a/dlls/hal/hal.c b/dlls/hal/hal.c
index fca4f23403..5b3ee44cff 100644
--- a/dlls/hal/hal.c
+++ b/dlls/hal/hal.c
@@ -76,16 +76,10 @@ KIRQL WINAPI DECLSPEC_HIDDEN __regs_KfAcquireSpinLock( KSPIN_LOCK *lock )
return irql;
}
-static inline void small_pause(void)
-{
- __asm__ __volatile__( "rep;nop" : : : "memory" );
-}
-
void WINAPI KeAcquireSpinLock( KSPIN_LOCK *lock, KIRQL *irql )
{
TRACE("lock %p, irql %p.\n", lock, irql);
- while (!InterlockedCompareExchangePointer( (void **)lock, (void *)1, (void *)0 ))
- small_pause();
+ KeAcquireSpinLockAtDpcLevel( lock );
*irql = 0;
}
@@ -98,7 +92,7 @@ void WINAPI DECLSPEC_HIDDEN __regs_KfReleaseSpinLock( KSPIN_LOCK *lock, KIRQL ir
void WINAPI KeReleaseSpinLock( KSPIN_LOCK *lock, KIRQL irql )
{
TRACE("lock %p, irql %u.\n", lock, irql);
- InterlockedExchangePointer( (void **)lock, 0 );
+ KeReleaseSpinLockFromDpcLevel( lock );
}
#endif /* __i386__ */
--
2.20.1
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