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net: hns3: add counter for times RX pages gets allocated 

Currently, using "ethtool --statistics" can show how many time RX
page have been reused, but there is no counter for RX page not
being reused.

This patch adds non_reuse_pg counter to better debug the performance
issue, because it is hard to determine when the RX page is reused
or not if there is no such counter.

Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.2
Yunsheng Lin 2019-05-06 10:48:43 +08:00 committed by David S. Miller
parent fb00331bb8
commit d21ff4f90d
3 changed files with 6 additions and 0 deletions
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4
drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
View File

@ -2315,6 +2315,10 @@ hns3_nic_alloc_rx_buffers(struct hns3_enet_ring *ring, int cleand_count)
break;
}
hns3_replace_buffer(ring, ring->next_to_use, &res_cbs);
u64_stats_update_begin(&ring->syncp);
ring->stats.non_reuse_pg++;
u64_stats_update_end(&ring->syncp);
}
ring_ptr_move_fw(ring, next_to_use);

1
drivers/net/ethernet/hisilicon/hns3/hns3_enet.h
View File

@ -389,6 +389,7 @@ struct ring_stats {
u64 l2_err;
u64 l3l4_csum_err;
u64 rx_multicast;
u64 non_reuse_pg;
};
};
};

1
drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
View File

@ -49,6 +49,7 @@ static const struct hns3_stats hns3_rxq_stats[] = {
HNS3_TQP_STAT("l2_err", l2_err),
HNS3_TQP_STAT("l3l4_csum_err", l3l4_csum_err),
HNS3_TQP_STAT("multicast", rx_multicast),
HNS3_TQP_STAT("non_reuse_pg", non_reuse_pg),
};
#define HNS3_RXQ_STATS_COUNT ARRAY_SIZE(hns3_rxq_stats)