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net/core: remove explicit do_softirq() from busy_poll_stop() 

Since commit 217f697436 ("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>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sebastian Siewior 2017-06-16 19:24:00 +02:00 committed by David S. Miller
parent bdaf32c3ce
commit fe420d87bb
1 changed files with 0 additions and 2 deletions
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2
net/core/dev.c
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@ -5206,8 +5206,6 @@ static void busy_poll_stop(struct napi_struct *napi, void *have_poll_lock)
if (rc == BUSY_POLL_BUDGET)
__napi_schedule(napi);
local_bh_enable();
if (local_softirq_pending())
do_softirq();
}
void napi_busy_loop(unsigned int napi_id,