diff options
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/dev.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index 3a2b8be9e67..8f9d3b38a44 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -2373,7 +2373,7 @@ EXPORT_SYMBOL(__napi_schedule); static void net_rx_action(struct softirq_action *h) { struct list_head *list = &__get_cpu_var(softnet_data).poll_list; - unsigned long start_time = jiffies; + unsigned long time_limit = jiffies + 2; int budget = netdev_budget; void *have; @@ -2384,13 +2384,10 @@ static void net_rx_action(struct softirq_action *h) int work, weight; /* If softirq window is exhuasted then punt. - * - * Note that this is a slight policy change from the - * previous NAPI code, which would allow up to 2 - * jiffies to pass before breaking out. The test - * used to be "jiffies - start_time > 1". + * Allow this to run for 2 jiffies since which will allow + * an average latency of 1.5/HZ. */ - if (unlikely(budget <= 0 || jiffies != start_time)) + if (unlikely(budget <= 0 || time_after(jiffies, time_limit))) goto softnet_break; local_irq_enable(); |