diff options
| author | Ben Hutchings <bhutchings@solarflare.com> | 2010-09-10 06:41:26 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-09-10 12:27:31 -0700 |
| commit | 58758aa505edc5b8f8393cee45b54c7485d76de5 (patch) | |
| tree | 6935e011c85f37661b2e3928fbfdcbcdb6b8af91 /drivers | |
| parent | e42de26249c88a00715ea686993192546d07133e (diff) | |
| download | linux-58758aa505edc5b8f8393cee45b54c7485d76de5.tar.gz | |
sfc: Allocate DMA and event rings using GFP_KERNEL
Currently we allocate DMA descriptor rings and event rings using pci_alloc_consistent() which selects non-blocking behaviour from the page allocator (GFP_ATOMIC). This is unnecessary, and since we currently allocate a single contiguous block for each ring (up to 32 pages!) these allocations are likely to fail if there is any significant memory pressure. Use dma_alloc_coherent() and GFP_KERNEL instead. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/sfc/nic.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/net/sfc/nic.c b/drivers/net/sfc/nic.c index f595d920c7c4..8efe1ca83c1d 100644 --- a/drivers/net/sfc/nic.c +++ b/drivers/net/sfc/nic.c @@ -263,8 +263,8 @@ static int efx_alloc_special_buffer(struct efx_nic *efx, { len = ALIGN(len, EFX_BUF_SIZE); - buffer->addr = pci_alloc_consistent(efx->pci_dev, len, - &buffer->dma_addr); + buffer->addr = dma_alloc_coherent(&efx->pci_dev->dev, len, + &buffer->dma_addr, GFP_KERNEL); if (!buffer->addr) return -ENOMEM; buffer->len = len; @@ -301,8 +301,8 @@ efx_free_special_buffer(struct efx_nic *efx, struct efx_special_buffer *buffer) (u64)buffer->dma_addr, buffer->len, buffer->addr, (u64)virt_to_phys(buffer->addr)); - pci_free_consistent(efx->pci_dev, buffer->len, buffer->addr, - buffer->dma_addr); + dma_free_coherent(&efx->pci_dev->dev, buffer->len, buffer->addr, + buffer->dma_addr); buffer->addr = NULL; buffer->entries = 0; } |