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net: ena: remove old adaptive interrupt moderation code from ena_netdev 

1. Out of the fields {per_napi_bytes, per_napi_packets} in struct ena_ring,
   only rx_ring->per_napi_packets are used to determine if napi did work
   for dim.
   This commit removes all other uses of these fields.
2. Remove ena_ring->moder_tbl_idx, which is not used by dim.
3. Remove all calls to ena_com_destroy_interrupt_moderation(), since all it
   did was to destroy the interrupt moderation table, which is removed as
   part of removing old interrupt moderation code.

Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arthur Kiyanovski 2019-09-16 14:31:31 +03:00 committed by David S. Miller
parent 57e3a5f24b
commit 242d81fd3d
2 changed files with 0 additions and 10 deletions
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8
drivers/net/ethernet/amazon/ena/ena_netdev.c
View File

@ -158,7 +158,6 @@ static void ena_init_io_rings_common(struct ena_adapter *adapter,
ring->adapter = adapter;
ring->ena_dev = adapter->ena_dev;
ring->per_napi_packets = 0;
ring->per_napi_bytes = 0;
ring->cpu = 0;
ring->first_interrupt = false;
ring->no_interrupt_event_cnt = 0;
@ -834,9 +833,6 @@ static int ena_clean_tx_irq(struct ena_ring *tx_ring, u32 budget)
__netif_tx_unlock(txq);
}
tx_ring->per_napi_bytes += tx_bytes;
tx_ring->per_napi_packets += tx_pkts;
return tx_pkts;
}
@ -1120,7 +1116,6 @@ static int ena_clean_rx_irq(struct ena_ring *rx_ring, struct napi_struct *napi,
} while (likely(res_budget));
work_done = budget - res_budget;
rx_ring->per_napi_bytes += total_len;
rx_ring->per_napi_packets += work_done;
u64_stats_update_begin(&rx_ring->syncp);
rx_ring->rx_stats.bytes += total_len;
@ -3641,7 +3636,6 @@ static int ena_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
ena_free_mgmnt_irq(adapter);
ena_disable_msix(adapter);
err_worker_destroy:
ena_com_destroy_interrupt_moderation(ena_dev);
del_timer(&adapter->timer_service);
err_netdev_destroy:
free_netdev(netdev);
@ -3702,8 +3696,6 @@ static void ena_remove(struct pci_dev *pdev)
pci_disable_device(pdev);
ena_com_destroy_interrupt_moderation(ena_dev);
vfree(ena_dev);
}

2
drivers/net/ethernet/amazon/ena/ena_netdev.h
View File

@ -280,8 +280,6 @@ struct ena_ring {
struct ena_com_rx_buf_info ena_bufs[ENA_PKT_MAX_BUFS];
u32 smoothed_interval;
u32 per_napi_packets;
u32 per_napi_bytes;
enum ena_intr_moder_level moder_tbl_idx;
u16 non_empty_napi_events;
struct u64_stats_sync syncp;
union {