Commit e98def1f authored by Jesper Dangaard Brouer's avatar Jesper Dangaard Brouer Committed by David S. Miller

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: default avatarJesper Dangaard Brouer <hawk@comx.dk>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d231776f
......@@ -3618,7 +3618,9 @@ static int niu_rx_work(struct niu *np, struct rx_ring_info *rp, int budget)
nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat);
niu_sync_rx_discard_stats(np, rp, 0x7FFF);
/* 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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