D46148.diff
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D46148.diff
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	diff --git a/sys/sys/buf_ring.h b/sys/sys/buf_ring.h
	--- a/sys/sys/buf_ring.h
	+++ b/sys/sys/buf_ring.h
	@@ -165,9 +165,6 @@
	buf_ring_dequeue_sc(struct buf_ring *br)
	{
	uint32_t cons_head, cons_next;
	-#ifdef PREFETCH_DEFINED
	- uint32_t cons_next_next;
	-#endif
	uint32_t prod_tail;
	void *buf;

	@@ -204,20 +201,10 @@
	prod_tail = atomic_load_acq_32(&br->br_prod_tail);

	cons_next = (cons_head + 1) & br->br_cons_mask;
	-#ifdef PREFETCH_DEFINED
	- cons_next_next = (cons_head + 2) & br->br_cons_mask;
	-#endif

	if (cons_head == prod_tail)
	return (NULL);

	-#ifdef PREFETCH_DEFINED
	- if (cons_next != prod_tail) {
	- prefetch(br->br_ring[cons_next]);
	- if (cons_next_next != prod_tail)
	- prefetch(br->br_ring[cons_next_next]);
	- }
	-#endif
	br->br_cons_head = cons_next;
	buf = br->br_ring[cons_head];