Commit e97dc3fc authored Mar 14, 2014 by Eric W. Biederman Committed by David S. Miller Mar 17, 2014

netpoll: Warn if more packets are processed than are budgeted



There is already a warning for this case in the normal netpoll path,
but put a copy here in case how netpoll calls the poll functions
causes a differenet result.

netpoll will shortly call the napi poll routine with a budget 0 to
avoid any rx packets being processed.  As nothing does that today
we may encounter drivers that have problems so a netpoll specific
warning seems desirable.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent eb8143b4

net/core/netpoll.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -158,6 +158,7 @@ static int poll_one_napi(struct napi_struct *napi, int budget)
		set_bit(NAPI_STATE_NPSVC, &napi->state);

		work = napi->poll(napi, budget);
		WARN_ONCE(work > budget, "%pF exceeded budget in poll\n", napi->poll);
		trace_napi_poll(napi);

		clear_bit(NAPI_STATE_NPSVC, &napi->state);