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sys: avoid using FspFsextProvider unnecessarily

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This commit is contained in:
Bill Zissimopoulos
2019-11-04 16:30:30 -08:00
parent 5110b3c5a1
commit 254174b8e9
4 changed files with 11 additions and 31 deletions
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16
src/sys/fsext.c
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@@ -28,7 +28,7 @@
* the data structure used to store providers (currently 2 parallel
* arrays) must be revisited.
*/
#define FSP_FSEXT_PROVIDER_COUNTMAX 4
#define FSP_FSEXT_PROVIDER_COUNTMAX 16
static KSPIN_LOCK FsextSpinLock = 0;
static UINT32 FsextControlCodes[FSP_FSEXT_PROVIDER_COUNTMAX];
@@ -37,23 +37,9 @@ static FSP_FSEXT_PROVIDER *FsextProviders[FSP_FSEXT_PROVIDER_COUNTMAX];
static inline
FSP_FSEXT_PROVIDER *FspFsextProviderGet(UINT32 FsextControlCode)
{
#if 0
for (ULONG I = 0; FSP_FSEXT_PROVIDER_COUNTMAX > I; I++)
if (FsextControlCode == FsextControlCodes[I])
return FsextProviders[I];
#else
/* unroll by hand */
FSP_FSCTL_STATIC_ASSERT(4 == FSP_FSEXT_PROVIDER_COUNTMAX,
"unrolled loop expects FsextProviders to have 4 elements");
if (FsextControlCode == FsextControlCodes[0])
return FsextProviders[0];
if (FsextControlCode == FsextControlCodes[1])
return FsextProviders[1];
if (FsextControlCode == FsextControlCodes[2])
return FsextProviders[2];
if (FsextControlCode == FsextControlCodes[3])
return FsextProviders[3];
#endif
return 0;
}