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| author | Felix Fietkau <nbd@nbd.name> | 2020-07-26 13:09:51 +0200 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2021-04-12 00:01:21 +0200 |
| commit | aa40528a5bca990ef8f6a82eb26d23c81b4b3cff (patch) | |
| tree | fe664da27700e09b6872d6b5f6cf55d759ffc76d /drivers/net/wireless/mediatek/mt76/dma.c | |
| parent | 7139b5c0c98af1e2a04bd9ff09d2c01c40f1da41 (diff) | |
| download | linux-stable-aa40528a5bca990ef8f6a82eb26d23c81b4b3cff.tar.gz linux-stable-aa40528a5bca990ef8f6a82eb26d23c81b4b3cff.tar.bz2 linux-stable-aa40528a5bca990ef8f6a82eb26d23c81b4b3cff.zip | |
mt76: use threaded NAPI
With threaded NAPI, the rx handler function is no longer bound to the CPU that
fired the interrupt, which significantly helps to spread the workload over
multiple CPUs, especially when multiple devices are using threaded NAPI at the
same time.
Exclude the tx handler from threaded NAPI by using a separate dummy netdev.
The work is small and short-lived enough that it makes more sense to run it in
softirq instead of creating a dedicated thread
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/dma.c')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/dma.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/dma.c b/drivers/net/wireless/mediatek/mt76/dma.c index 2f27c43ad76d..6273b2cfce4f 100644 --- a/drivers/net/wireless/mediatek/mt76/dma.c +++ b/drivers/net/wireless/mediatek/mt76/dma.c @@ -602,7 +602,6 @@ mt76_dma_rx_poll(struct napi_struct *napi, int budget) dev = container_of(napi->dev, struct mt76_dev, napi_dev); qid = napi - dev->napi; - local_bh_disable(); rcu_read_lock(); do { @@ -612,7 +611,6 @@ mt76_dma_rx_poll(struct napi_struct *napi, int budget) } while (cur && done < budget); rcu_read_unlock(); - local_bh_enable(); if (done < budget && napi_complete(napi)) dev->drv->rx_poll_complete(dev, qid); @@ -626,6 +624,10 @@ mt76_dma_init(struct mt76_dev *dev) int i; init_dummy_netdev(&dev->napi_dev); + init_dummy_netdev(&dev->tx_napi_dev); + snprintf(dev->napi_dev.name, sizeof(dev->napi_dev.name), "%s", + wiphy_name(dev->hw->wiphy)); + dev->napi_dev.threaded = 1; mt76_for_each_q_rx(dev, i) { netif_napi_add(&dev->napi_dev, &dev->napi[i], mt76_dma_rx_poll, |