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IB/hfi1: Inline sdma_txclean() for verbs pio

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Short circuit sdma_txclean() by adding an __sdma_txclean()
that is only called when the tx has sdma mappings.

Convert internal calls to __sdma_txclean().

This removes a call from the critical path.

Reviewed-by: Sebastian Sanchez <sebastian.sanchez@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Mike Marciniszyn
2016-10-10 06:14:34 -07:00
committed by Doug Ledford
parent 4e045572e2
commit 63df8e09e1
2 changed files with 18 additions and 12 deletions
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12
drivers/infiniband/hw/hfi1/sdma.h
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@@ -667,7 +667,13 @@ int ext_coal_sdma_tx_descs(struct hfi1_devdata *dd, struct sdma_txreq *tx,
int type, void *kvaddr, struct page *page,
unsigned long offset, u16 len);
int _pad_sdma_tx_descs(struct hfi1_devdata *, struct sdma_txreq *);
void sdma_txclean(struct hfi1_devdata *, struct sdma_txreq *);
void __sdma_txclean(struct hfi1_devdata *, struct sdma_txreq *);
static inline void sdma_txclean(struct hfi1_devdata *dd, struct sdma_txreq *tx)
{
if (tx->num_desc)
__sdma_txclean(dd, tx);
}
/* helpers used by public routines */
static inline void _sdma_close_tx(struct hfi1_devdata *dd,
@@ -753,7 +759,7 @@ static inline int sdma_txadd_page(
DMA_TO_DEVICE);
if (unlikely(dma_mapping_error(&dd->pcidev->dev, addr))) {
sdma_txclean(dd, tx);
__sdma_txclean(dd, tx);
return -ENOSPC;
}
@@ -834,7 +840,7 @@ static inline int sdma_txadd_kvaddr(
DMA_TO_DEVICE);
if (unlikely(dma_mapping_error(&dd->pcidev->dev, addr))) {
sdma_txclean(dd, tx);
__sdma_txclean(dd, tx);
return -ENOSPC;
}