| From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> |
| Date: Mon, 22 May 2017 21:08:08 +0200 |
| Subject: net/core: remove explicit do_softirq() from busy_poll_stop() |
| |
| Since commit 217f69743681 ("net: busy-poll: allow preemption in |
| sk_busy_loop()") there is an explicit do_softirq() invocation after |
| local_bh_enable() has been invoked. |
| I don't understand why we need this because local_bh_enable() will |
| invoke do_softirq() once the softirq counter reached zero and we have |
| softirq-related work pending. |
| |
| Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> |
| --- |
| net/core/dev.c | 2 -- |
| 1 file changed, 2 deletions(-) |
| |
| --- a/net/core/dev.c |
| +++ b/net/core/dev.c |
| @@ -5070,8 +5070,6 @@ static void busy_poll_stop(struct napi_s |
| if (rc == BUSY_POLL_BUDGET) |
| __napi_schedule(napi); |
| local_bh_enable(); |
| - if (local_softirq_pending()) |
| - do_softirq(); |
| } |
| |
| bool sk_busy_loop(struct sock *sk, int nonblock) |
