Messages in this thread Patch in this message | | | From | Paul Gortmaker <> | Subject | [v2.6.34-stable 057/213] net: reduce net_rx_action() latency to 2 HZ | Date | Wed, 5 Feb 2014 15:00:12 -0500 |
| |
From: Eric Dumazet <edumazt@google.com>
------------------- This is a commit scheduled for the next v2.6.34 longterm release. http://git.kernel.org/?p=linux/kernel/git/paulg/longterm-queue-2.6.34.git If you see a problem with using this for longterm, please comment. -------------------
commit d1f41b67ff7735193bc8b418b98ac99a448833e2 upstream.
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> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> --- 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 2aaf2e610f92..253b409fe3ab 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -3045,7 +3045,7 @@ 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(); -- 1.8.5.2
| |