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Date: Tue, 04 Jun 2013 19:23:55 +0200 From: Willy Tarreau <w@....eu> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: Eric Dumazet <edumazet@...gle.com>, "David S. Miller" <davem@...emloft.net>, Willy Tarreau <w@....eu> 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@...gle.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@...gle.com> Signed-off-by: David S. Miller <davem@...emloft.net> (cherry picked from commit d1f41b67ff7735193bc8b418b98ac99a448833e2) Signed-off-by: Willy Tarreau <w@....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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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