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staging: hv: Convert camel cased local variables in ring_buffer.c to lower cases

staging: hv: Convert camel cased local variables in ring_buffer.c to lower cases

Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Haiyang Zhang 2010-11-08 14:04:46 -08:00 committed by Greg Kroah-Hartman
parent 82f8bd40a0
commit fc8c72ebfa
3 changed files with 185 additions and 182 deletions

View file

@ -1052,6 +1052,6 @@ void vmbus_ontimer(unsigned long data)
static void dump_vmbus_channel(struct vmbus_channel *channel)
{
DPRINT_DBG(VMBUS, "Channel (%d)", channel->offermsg.child_relid);
DumpRingInfo(&channel->outbound, "Outbound ");
DumpRingInfo(&channel->inbound, "Inbound ");
Dumpring_info(&channel->outbound, "Outbound ");
Dumpring_info(&channel->inbound, "Inbound ");
}

View file

@ -68,11 +68,11 @@ Description:
--*/
static inline u32
GetNextWriteLocation(struct hv_ring_buffer_info *RingInfo)
GetNextWriteLocation(struct hv_ring_buffer_info *ring_info)
{
u32 next = RingInfo->ring_buffer->write_index;
u32 next = ring_info->ring_buffer->write_index;
/* ASSERT(next < RingInfo->RingDataSize); */
/* ASSERT(next < ring_info->RingDataSize); */
return next;
}
@ -87,10 +87,10 @@ Description:
--*/
static inline void
SetNextWriteLocation(struct hv_ring_buffer_info *RingInfo,
u32 NextWriteLocation)
SetNextWriteLocation(struct hv_ring_buffer_info *ring_info,
u32 next_write_location)
{
RingInfo->ring_buffer->write_index = NextWriteLocation;
ring_info->ring_buffer->write_index = next_write_location;
}
/*++
@ -103,11 +103,11 @@ Description:
--*/
static inline u32
GetNextReadLocation(struct hv_ring_buffer_info *RingInfo)
GetNextReadLocation(struct hv_ring_buffer_info *ring_info)
{
u32 next = RingInfo->ring_buffer->read_index;
u32 next = ring_info->ring_buffer->read_index;
/* ASSERT(next < RingInfo->RingDataSize); */
/* ASSERT(next < ring_info->RingDataSize); */
return next;
}
@ -123,13 +123,13 @@ Description:
--*/
static inline u32
GetNextReadLocationWithOffset(struct hv_ring_buffer_info *RingInfo, u32 Offset)
GetNextReadLocationWithOffset(struct hv_ring_buffer_info *ring_info, u32 offset)
{
u32 next = RingInfo->ring_buffer->read_index;
u32 next = ring_info->ring_buffer->read_index;
/* ASSERT(next < RingInfo->RingDataSize); */
next += Offset;
next %= RingInfo->ring_datasize;
/* ASSERT(next < ring_info->RingDataSize); */
next += offset;
next %= ring_info->ring_datasize;
return next;
}
@ -144,9 +144,10 @@ Description:
--*/
static inline void
SetNextReadLocation(struct hv_ring_buffer_info *RingInfo, u32 NextReadLocation)
SetNextReadLocation(struct hv_ring_buffer_info *ring_info,
u32 next_read_location)
{
RingInfo->ring_buffer->read_index = NextReadLocation;
ring_info->ring_buffer->read_index = next_read_location;
}
@ -160,9 +161,9 @@ Description:
--*/
static inline void *
GetRingBuffer(struct hv_ring_buffer_info *RingInfo)
GetRingBuffer(struct hv_ring_buffer_info *ring_info)
{
return (void *)RingInfo->ring_buffer->buffer;
return (void *)ring_info->ring_buffer->buffer;
}
@ -176,9 +177,9 @@ Description:
--*/
static inline u32
GetRingBufferSize(struct hv_ring_buffer_info *RingInfo)
GetRingBufferSize(struct hv_ring_buffer_info *ring_info)
{
return RingInfo->ring_datasize;
return ring_info->ring_datasize;
}
/*++
@ -191,41 +192,41 @@ Description:
--*/
static inline u64
GetRingBufferIndices(struct hv_ring_buffer_info *RingInfo)
GetRingBufferIndices(struct hv_ring_buffer_info *ring_info)
{
return (u64)RingInfo->ring_buffer->write_index << 32;
return (u64)ring_info->ring_buffer->write_index << 32;
}
/*++
Name:
DumpRingInfo()
Dumpring_info()
Description:
Dump out to console the ring buffer info
--*/
void DumpRingInfo(struct hv_ring_buffer_info *RingInfo, char *Prefix)
void Dumpring_info(struct hv_ring_buffer_info *ring_info, char *prefix)
{
u32 bytesAvailToWrite;
u32 bytesAvailToRead;
u32 bytes_avail_towrite;
u32 bytes_avail_toread;
GetRingBufferAvailBytes(RingInfo,
&bytesAvailToRead,
&bytesAvailToWrite);
GetRingBufferAvailBytes(ring_info,
&bytes_avail_toread,
&bytes_avail_towrite);
DPRINT(VMBUS,
DEBUG_RING_LVL,
"%s <<ringinfo %p buffer %p avail write %u "
"avail read %u read idx %u write idx %u>>",
Prefix,
RingInfo,
RingInfo->ring_buffer->buffer,
bytesAvailToWrite,
bytesAvailToRead,
RingInfo->ring_buffer->read_index,
RingInfo->ring_buffer->write_index);
prefix,
ring_info,
ring_info->ring_buffer->buffer,
bytes_avail_towrite,
bytes_avail_toread,
ring_info->ring_buffer->read_index,
ring_info->ring_buffer->write_index);
}
@ -233,17 +234,17 @@ void DumpRingInfo(struct hv_ring_buffer_info *RingInfo, char *Prefix)
static u32
CopyToRingBuffer(
struct hv_ring_buffer_info *RingInfo,
u32 StartWriteOffset,
void *Src,
u32 SrcLen);
struct hv_ring_buffer_info *ring_info,
u32 start_write_offset,
void *src,
u32 srclen);
static u32
CopyFromRingBuffer(
struct hv_ring_buffer_info *RingInfo,
void *Dest,
u32 DestLen,
u32 StartReadOffset);
struct hv_ring_buffer_info *ring_info,
void *dest,
u32 destlen,
u32 start_read_offset);
@ -256,25 +257,25 @@ Description:
Get various debug metrics for the specified ring buffer
--*/
void RingBufferGetDebugInfo(struct hv_ring_buffer_info *RingInfo,
void RingBufferGetDebugInfo(struct hv_ring_buffer_info *ring_info,
struct hv_ring_buffer_debug_info *debug_info)
{
u32 bytesAvailToWrite;
u32 bytesAvailToRead;
u32 bytes_avail_towrite;
u32 bytes_avail_toread;
if (RingInfo->ring_buffer) {
GetRingBufferAvailBytes(RingInfo,
&bytesAvailToRead,
&bytesAvailToWrite);
if (ring_info->ring_buffer) {
GetRingBufferAvailBytes(ring_info,
&bytes_avail_toread,
&bytes_avail_towrite);
debug_info->bytes_avail_toread = bytesAvailToRead;
debug_info->bytes_avail_towrite = bytesAvailToWrite;
debug_info->bytes_avail_toread = bytes_avail_toread;
debug_info->bytes_avail_towrite = bytes_avail_towrite;
debug_info->current_read_index =
RingInfo->ring_buffer->read_index;
ring_info->ring_buffer->read_index;
debug_info->current_write_index =
RingInfo->ring_buffer->write_index;
ring_info->ring_buffer->write_index;
debug_info->current_interrupt_mask =
RingInfo->ring_buffer->interrupt_mask;
ring_info->ring_buffer->interrupt_mask;
}
}
@ -302,21 +303,22 @@ Description:
Initialize the ring buffer
--*/
int RingBufferInit(struct hv_ring_buffer_info *RingInfo, void *Buffer, u32 BufferLen)
int RingBufferInit(struct hv_ring_buffer_info *ring_info,
void *buffer, u32 buflen)
{
if (sizeof(struct hv_ring_buffer) != PAGE_SIZE)
return -EINVAL;
memset(RingInfo, 0, sizeof(struct hv_ring_buffer_info));
memset(ring_info, 0, sizeof(struct hv_ring_buffer_info));
RingInfo->ring_buffer = (struct hv_ring_buffer *)Buffer;
RingInfo->ring_buffer->read_index =
RingInfo->ring_buffer->write_index = 0;
ring_info->ring_buffer = (struct hv_ring_buffer *)buffer;
ring_info->ring_buffer->read_index =
ring_info->ring_buffer->write_index = 0;
RingInfo->ring_size = BufferLen;
RingInfo->ring_datasize = BufferLen - sizeof(struct hv_ring_buffer);
ring_info->ring_size = buflen;
ring_info->ring_datasize = buflen - sizeof(struct hv_ring_buffer);
spin_lock_init(&RingInfo->ring_lock);
spin_lock_init(&ring_info->ring_lock);
return 0;
}
@ -330,7 +332,7 @@ Description:
Cleanup the ring buffer
--*/
void RingBufferCleanup(struct hv_ring_buffer_info *RingInfo)
void RingBufferCleanup(struct hv_ring_buffer_info *ring_info)
{
}
@ -343,78 +345,78 @@ Description:
Write to the ring buffer
--*/
int RingBufferWrite(struct hv_ring_buffer_info *OutRingInfo,
int RingBufferWrite(struct hv_ring_buffer_info *outring_info,
struct scatterlist *sglist, u32 sgcount)
{
int i = 0;
u32 byteAvailToWrite;
u32 byteAvailToRead;
u32 totalBytesToWrite = 0;
u32 bytes_avail_towrite;
u32 bytes_avail_toread;
u32 totalbytes_towrite = 0;
struct scatterlist *sg;
volatile u32 nextWriteLocation;
u64 prevIndices = 0;
volatile u32 next_write_location;
u64 prev_indices = 0;
unsigned long flags;
for_each_sg(sglist, sg, sgcount, i)
{
totalBytesToWrite += sg->length;
totalbytes_towrite += sg->length;
}
totalBytesToWrite += sizeof(u64);
totalbytes_towrite += sizeof(u64);
spin_lock_irqsave(&OutRingInfo->ring_lock, flags);
spin_lock_irqsave(&outring_info->ring_lock, flags);
GetRingBufferAvailBytes(OutRingInfo,
&byteAvailToRead,
&byteAvailToWrite);
GetRingBufferAvailBytes(outring_info,
&bytes_avail_toread,
&bytes_avail_towrite);
DPRINT_DBG(VMBUS, "Writing %u bytes...", totalBytesToWrite);
DPRINT_DBG(VMBUS, "Writing %u bytes...", totalbytes_towrite);
/* DumpRingInfo(OutRingInfo, "BEFORE "); */
/* Dumpring_info(Outring_info, "BEFORE "); */
/* If there is only room for the packet, assume it is full. */
/* Otherwise, the next time around, we think the ring buffer */
/* is empty since the read index == write index */
if (byteAvailToWrite <= totalBytesToWrite) {
if (bytes_avail_towrite <= totalbytes_towrite) {
DPRINT_DBG(VMBUS,
"No more space left on outbound ring buffer "
"(needed %u, avail %u)",
totalBytesToWrite,
byteAvailToWrite);
totalbytes_towrite,
bytes_avail_towrite);
spin_unlock_irqrestore(&OutRingInfo->ring_lock, flags);
spin_unlock_irqrestore(&outring_info->ring_lock, flags);
return -1;
}
/* Write to the ring buffer */
nextWriteLocation = GetNextWriteLocation(OutRingInfo);
next_write_location = GetNextWriteLocation(outring_info);
for_each_sg(sglist, sg, sgcount, i)
{
nextWriteLocation = CopyToRingBuffer(OutRingInfo,
nextWriteLocation,
next_write_location = CopyToRingBuffer(outring_info,
next_write_location,
sg_virt(sg),
sg->length);
}
/* Set previous packet start */
prevIndices = GetRingBufferIndices(OutRingInfo);
prev_indices = GetRingBufferIndices(outring_info);
nextWriteLocation = CopyToRingBuffer(OutRingInfo,
nextWriteLocation,
&prevIndices,
next_write_location = CopyToRingBuffer(outring_info,
next_write_location,
&prev_indices,
sizeof(u64));
/* Make sure we flush all writes before updating the writeIndex */
mb();
/* Now, update the write location */
SetNextWriteLocation(OutRingInfo, nextWriteLocation);
SetNextWriteLocation(outring_info, next_write_location);
/* DumpRingInfo(OutRingInfo, "AFTER "); */
/* Dumpring_info(Outring_info, "AFTER "); */
spin_unlock_irqrestore(&OutRingInfo->ring_lock, flags);
spin_unlock_irqrestore(&outring_info->ring_lock, flags);
return 0;
}
@ -428,41 +430,42 @@ Description:
Read without advancing the read index
--*/
int RingBufferPeek(struct hv_ring_buffer_info *InRingInfo, void *Buffer, u32 BufferLen)
int RingBufferPeek(struct hv_ring_buffer_info *Inring_info,
void *Buffer, u32 buflen)
{
u32 bytesAvailToWrite;
u32 bytesAvailToRead;
u32 nextReadLocation = 0;
u32 bytes_avail_towrite;
u32 bytes_avail_toread;
u32 next_read_location = 0;
unsigned long flags;
spin_lock_irqsave(&InRingInfo->ring_lock, flags);
spin_lock_irqsave(&Inring_info->ring_lock, flags);
GetRingBufferAvailBytes(InRingInfo,
&bytesAvailToRead,
&bytesAvailToWrite);
GetRingBufferAvailBytes(Inring_info,
&bytes_avail_toread,
&bytes_avail_towrite);
/* Make sure there is something to read */
if (bytesAvailToRead < BufferLen) {
if (bytes_avail_toread < buflen) {
/* DPRINT_DBG(VMBUS,
"got callback but not enough to read "
"<avail to read %d read size %d>!!",
bytesAvailToRead,
bytes_avail_toread,
BufferLen); */
spin_unlock_irqrestore(&InRingInfo->ring_lock, flags);
spin_unlock_irqrestore(&Inring_info->ring_lock, flags);
return -1;
}
/* Convert to byte offset */
nextReadLocation = GetNextReadLocation(InRingInfo);
next_read_location = GetNextReadLocation(Inring_info);
nextReadLocation = CopyFromRingBuffer(InRingInfo,
next_read_location = CopyFromRingBuffer(Inring_info,
Buffer,
BufferLen,
nextReadLocation);
buflen,
next_read_location);
spin_unlock_irqrestore(&InRingInfo->ring_lock, flags);
spin_unlock_irqrestore(&Inring_info->ring_lock, flags);
return 0;
}
@ -477,52 +480,52 @@ Description:
Read and advance the read index
--*/
int RingBufferRead(struct hv_ring_buffer_info *InRingInfo, void *Buffer,
u32 BufferLen, u32 Offset)
int RingBufferRead(struct hv_ring_buffer_info *inring_info, void *buffer,
u32 buflen, u32 offset)
{
u32 bytesAvailToWrite;
u32 bytesAvailToRead;
u32 nextReadLocation = 0;
u64 prevIndices = 0;
u32 bytes_avail_towrite;
u32 bytes_avail_toread;
u32 next_read_location = 0;
u64 prev_indices = 0;
unsigned long flags;
if (BufferLen <= 0)
if (buflen <= 0)
return -EINVAL;
spin_lock_irqsave(&InRingInfo->ring_lock, flags);
spin_lock_irqsave(&inring_info->ring_lock, flags);
GetRingBufferAvailBytes(InRingInfo,
&bytesAvailToRead,
&bytesAvailToWrite);
GetRingBufferAvailBytes(inring_info,
&bytes_avail_toread,
&bytes_avail_towrite);
DPRINT_DBG(VMBUS, "Reading %u bytes...", BufferLen);
DPRINT_DBG(VMBUS, "Reading %u bytes...", buflen);
/* DumpRingInfo(InRingInfo, "BEFORE "); */
/* Dumpring_info(Inring_info, "BEFORE "); */
/* Make sure there is something to read */
if (bytesAvailToRead < BufferLen) {
if (bytes_avail_toread < buflen) {
DPRINT_DBG(VMBUS,
"got callback but not enough to read "
"<avail to read %d read size %d>!!",
bytesAvailToRead,
BufferLen);
bytes_avail_toread,
buflen);
spin_unlock_irqrestore(&InRingInfo->ring_lock, flags);
spin_unlock_irqrestore(&inring_info->ring_lock, flags);
return -1;
}
nextReadLocation = GetNextReadLocationWithOffset(InRingInfo, Offset);
next_read_location = GetNextReadLocationWithOffset(inring_info, offset);
nextReadLocation = CopyFromRingBuffer(InRingInfo,
Buffer,
BufferLen,
nextReadLocation);
next_read_location = CopyFromRingBuffer(inring_info,
buffer,
buflen,
next_read_location);
nextReadLocation = CopyFromRingBuffer(InRingInfo,
&prevIndices,
next_read_location = CopyFromRingBuffer(inring_info,
&prev_indices,
sizeof(u64),
nextReadLocation);
next_read_location);
/* Make sure all reads are done before we update the read index since */
/* the writer may start writing to the read area once the read index */
@ -530,11 +533,11 @@ int RingBufferRead(struct hv_ring_buffer_info *InRingInfo, void *Buffer,
mb();
/* Update the read index */
SetNextReadLocation(InRingInfo, nextReadLocation);
SetNextReadLocation(inring_info, next_read_location);
/* DumpRingInfo(InRingInfo, "AFTER "); */
/* Dumpring_info(Inring_info, "AFTER "); */
spin_unlock_irqrestore(&InRingInfo->ring_lock, flags);
spin_unlock_irqrestore(&inring_info->ring_lock, flags);
return 0;
}
@ -552,29 +555,29 @@ Description:
--*/
static u32
CopyToRingBuffer(
struct hv_ring_buffer_info *RingInfo,
u32 StartWriteOffset,
void *Src,
u32 SrcLen)
struct hv_ring_buffer_info *ring_info,
u32 start_write_offset,
void *src,
u32 srclen)
{
void *ringBuffer = GetRingBuffer(RingInfo);
u32 ringBufferSize = GetRingBufferSize(RingInfo);
u32 fragLen;
void *ring_buffer = GetRingBuffer(ring_info);
u32 ring_buffer_size = GetRingBufferSize(ring_info);
u32 frag_len;
/* wrap-around detected! */
if (SrcLen > ringBufferSize - StartWriteOffset) {
if (srclen > ring_buffer_size - start_write_offset) {
DPRINT_DBG(VMBUS, "wrap-around detected!");
fragLen = ringBufferSize - StartWriteOffset;
memcpy(ringBuffer + StartWriteOffset, Src, fragLen);
memcpy(ringBuffer, Src + fragLen, SrcLen - fragLen);
frag_len = ring_buffer_size - start_write_offset;
memcpy(ring_buffer + start_write_offset, src, frag_len);
memcpy(ring_buffer, src + frag_len, srclen - frag_len);
} else
memcpy(ringBuffer + StartWriteOffset, Src, SrcLen);
memcpy(ring_buffer + start_write_offset, src, srclen);
StartWriteOffset += SrcLen;
StartWriteOffset %= ringBufferSize;
start_write_offset += srclen;
start_write_offset %= ring_buffer_size;
return StartWriteOffset;
return start_write_offset;
}
@ -590,33 +593,33 @@ Description:
--*/
static u32
CopyFromRingBuffer(
struct hv_ring_buffer_info *RingInfo,
void *Dest,
u32 DestLen,
u32 StartReadOffset)
struct hv_ring_buffer_info *ring_info,
void *dest,
u32 destlen,
u32 start_read_offset)
{
void *ringBuffer = GetRingBuffer(RingInfo);
u32 ringBufferSize = GetRingBufferSize(RingInfo);
void *ring_buffer = GetRingBuffer(ring_info);
u32 ring_buffer_size = GetRingBufferSize(ring_info);
u32 fragLen;
u32 frag_len;
/* wrap-around detected at the src */
if (DestLen > ringBufferSize - StartReadOffset) {
if (destlen > ring_buffer_size - start_read_offset) {
DPRINT_DBG(VMBUS, "src wrap-around detected!");
fragLen = ringBufferSize - StartReadOffset;
frag_len = ring_buffer_size - start_read_offset;
memcpy(Dest, ringBuffer + StartReadOffset, fragLen);
memcpy(Dest + fragLen, ringBuffer, DestLen - fragLen);
memcpy(dest, ring_buffer + start_read_offset, frag_len);
memcpy(dest + frag_len, ring_buffer, destlen - frag_len);
} else
memcpy(Dest, ringBuffer + StartReadOffset, DestLen);
memcpy(dest, ring_buffer + start_read_offset, destlen);
StartReadOffset += DestLen;
StartReadOffset %= ringBufferSize;
start_read_offset += destlen;
start_read_offset %= ring_buffer_size;
return StartReadOffset;
return start_read_offset;
}

View file

@ -75,28 +75,28 @@ struct hv_ring_buffer_debug_info {
/* Interface */
int RingBufferInit(struct hv_ring_buffer_info *RingInfo, void *Buffer,
u32 BufferLen);
int RingBufferInit(struct hv_ring_buffer_info *ring_info, void *buffer,
u32 buflen);
void RingBufferCleanup(struct hv_ring_buffer_info *RingInfo);
void RingBufferCleanup(struct hv_ring_buffer_info *ring_info);
int RingBufferWrite(struct hv_ring_buffer_info *RingInfo,
int RingBufferWrite(struct hv_ring_buffer_info *ring_info,
struct scatterlist *sglist,
u32 sgcount);
int RingBufferPeek(struct hv_ring_buffer_info *RingInfo, void *Buffer,
u32 BufferLen);
int RingBufferPeek(struct hv_ring_buffer_info *ring_info, void *buffer,
u32 buflen);
int RingBufferRead(struct hv_ring_buffer_info *RingInfo,
void *Buffer,
u32 BufferLen,
u32 Offset);
int RingBufferRead(struct hv_ring_buffer_info *ring_info,
void *buffer,
u32 buflen,
u32 offset);
u32 GetRingBufferInterruptMask(struct hv_ring_buffer_info *RingInfo);
u32 GetRingBufferInterruptMask(struct hv_ring_buffer_info *ring_info);
void DumpRingInfo(struct hv_ring_buffer_info *RingInfo, char *Prefix);
void Dumpring_info(struct hv_ring_buffer_info *ring_info, char *prefix);
void RingBufferGetDebugInfo(struct hv_ring_buffer_info *RingInfo,
void RingBufferGetDebugInfo(struct hv_ring_buffer_info *ring_info,
struct hv_ring_buffer_debug_info *debug_info);
#endif /* _RING_BUFFER_H_ */