diff options
| author | Auke Kok <auke-jan.h.kok@intel.com> | 2006-06-08 09:28:47 -0700 |
|---|---|---|
| committer | Auke Kok <juke-jan.h.kok@intel.com> | 2006-06-08 09:28:47 -0700 |
| commit | 24f476eeecba66524af3f95e31ac208eea99e617 (patch) | |
| tree | bbcd87d78ea4bd38100645ca28797a5c3df9a741 /drivers | |
| parent | b9b6e78b11de295ef073271979355d5fab71b877 (diff) | |
| download | op-kernel-dev-24f476eeecba66524af3f95e31ac208eea99e617.zip op-kernel-dev-24f476eeecba66524af3f95e31ac208eea99e617.tar.gz | |
e1000: remove risky prefetch on next_skb->data
It was brought to our attention that the prefetches break e1000 traffic
on xscale/arm architectures. Remove them for now. We'll let them
stay in mm for a while, or find a better solution to enable.
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/e1000/e1000_main.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c index ed15fca..97e71a4 100644 --- a/drivers/net/e1000/e1000_main.c +++ b/drivers/net/e1000/e1000_main.c @@ -3519,7 +3519,7 @@ e1000_clean_rx_irq(struct e1000_adapter *adapter, buffer_info = &rx_ring->buffer_info[i]; while (rx_desc->status & E1000_RXD_STAT_DD) { - struct sk_buff *skb, *next_skb; + struct sk_buff *skb; u8 status; #ifdef CONFIG_E1000_NAPI if (*work_done >= work_to_do) @@ -3537,8 +3537,6 @@ e1000_clean_rx_irq(struct e1000_adapter *adapter, prefetch(next_rxd); next_buffer = &rx_ring->buffer_info[i]; - next_skb = next_buffer->skb; - prefetch(next_skb->data - NET_IP_ALIGN); cleaned = TRUE; cleaned_count++; @@ -3668,7 +3666,7 @@ e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, struct e1000_buffer *buffer_info, *next_buffer; struct e1000_ps_page *ps_page; struct e1000_ps_page_dma *ps_page_dma; - struct sk_buff *skb, *next_skb; + struct sk_buff *skb; unsigned int i, j; uint32_t length, staterr; int cleaned_count = 0; @@ -3697,8 +3695,6 @@ e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, prefetch(next_rxd); next_buffer = &rx_ring->buffer_info[i]; - next_skb = next_buffer->skb; - prefetch(next_skb->data - NET_IP_ALIGN); cleaned = TRUE; cleaned_count++; |
