Commit e98def1f authored Dec 18, 2008 by Jesper Dangaard Brouer Committed by David S. Miller Dec 18, 2008

NIU: Implement discard counters, optimize



Optimize the lightly loaded case, by only synchronizing discards stats
when qlen > 10 indicate potential for drops.

Notice Robert Olsson might disagree with this patch.

Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent d231776f

drivers/net/niu.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -3618,6 +3618,8 @@ static int niu_rx_work(struct niu np, struct rx_ring_info rp, int budget)

		nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat);

		/* Only sync discards stats when qlen indicate potential for drops */
		if (qlen > 10)
		niu_sync_rx_discard_stats(np, rp, 0x7FFF);

		return work_done;

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