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| author | Ingo Molnar <mingo@elte.hu> | 2009-05-12 12:17:30 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-05-12 12:17:36 +0200 |
| commit | 6cda3eb62ef42aa5acd649bf99c8db544e0f4051 (patch) | |
| tree | 93f74ca002f5756c8e157611174f9540b5cf41c0 /drivers/net/ehea/ehea_main.c | |
| parent | b9c61b70075c87a8612624736faf4a2de5b1ed30 (diff) | |
| parent | cec6be6d1069d697beb490bbb40a290d5ff554a2 (diff) | |
| download | lwn-6cda3eb62ef42aa5acd649bf99c8db544e0f4051.tar.gz lwn-6cda3eb62ef42aa5acd649bf99c8db544e0f4051.zip | |
Merge branch 'x86/apic' into irq/numa
Merge reason: both topics modify the APIC code but were able to do it in
parallel so far. An upcoming patch generates a conflict so
merge them to avoid the conflict.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/net/ehea/ehea_main.c')
| -rw-r--r-- | drivers/net/ehea/ehea_main.c | 31 |
1 files changed, 18 insertions, 13 deletions
diff --git a/drivers/net/ehea/ehea_main.c b/drivers/net/ehea/ehea_main.c index 604c844d0769..b22dab9153f6 100644 --- a/drivers/net/ehea/ehea_main.c +++ b/drivers/net/ehea/ehea_main.c @@ -545,14 +545,17 @@ static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array, x &= (arr_len - 1); pref = skb_array[x]; - prefetchw(pref); - prefetchw(pref + EHEA_CACHE_LINE); - - pref = (skb_array[x]->data); - prefetch(pref); - prefetch(pref + EHEA_CACHE_LINE); - prefetch(pref + EHEA_CACHE_LINE * 2); - prefetch(pref + EHEA_CACHE_LINE * 3); + if (pref) { + prefetchw(pref); + prefetchw(pref + EHEA_CACHE_LINE); + + pref = (skb_array[x]->data); + prefetch(pref); + prefetch(pref + EHEA_CACHE_LINE); + prefetch(pref + EHEA_CACHE_LINE * 2); + prefetch(pref + EHEA_CACHE_LINE * 3); + } + skb = skb_array[skb_index]; skb_array[skb_index] = NULL; return skb; @@ -569,12 +572,14 @@ static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array, x &= (arr_len - 1); pref = skb_array[x]; - prefetchw(pref); - prefetchw(pref + EHEA_CACHE_LINE); + if (pref) { + prefetchw(pref); + prefetchw(pref + EHEA_CACHE_LINE); - pref = (skb_array[x]->data); - prefetchw(pref); - prefetchw(pref + EHEA_CACHE_LINE); + pref = (skb_array[x]->data); + prefetchw(pref); + prefetchw(pref + EHEA_CACHE_LINE); + } skb = skb_array[wqe_index]; skb_array[wqe_index] = NULL; |