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Subject[ 145/184] net: reduce net_rx_action() latency to 2 HZ
2.6.32-longterm review patch.  If anyone has any objections, please let me know.

------------------

From: Eric Dumazet <edumazt@google.com>

We should use time_after_eq() to get maximum latency of two ticks,
instead of three.

Bug added in commit 24f8b2385 (net: increase receive packet quantum)

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit d1f41b67ff7735193bc8b418b98ac99a448833e2)
Signed-off-by: Willy Tarreau <w@1wt.eu>
---
net/core/dev.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/core/dev.c b/net/core/dev.c
index f4a6e14..d775563 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2848,7 +2848,7 @@ static void net_rx_action(struct softirq_action *h)
* Allow this to run for 2 jiffies since which will allow
* an average latency of 1.5/HZ.
*/
- if (unlikely(budget <= 0 || time_after(jiffies, time_limit)))
+ if (unlikely(budget <= 0 || time_after_eq(jiffies, time_limit)))
goto softnet_break;

local_irq_enable();
--
1.7.12.2.21.g234cd45.dirty




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