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mt76: use threaded NAPI

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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.

Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Felix Fietkau
2020-08-22 15:56:52 +02:00
parent b54157df7c
commit 888990e159
1 changed files with 2 additions and 4 deletions
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dma.c
+2 -4
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@@ -564,7 +564,6 @@ 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 {
@@ -574,7 +573,6 @@ 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);
@@ -590,8 +588,8 @@ mt76_dma_init(struct mt76_dev *dev)
init_dummy_netdev(&dev->napi_dev);
mt76_for_each_q_rx(dev, i) {
netif_napi_add(&dev->napi_dev, &dev->napi[i], mt76_dma_rx_poll,
64);
netif_threaded_napi_add(&dev->napi_dev, &dev->napi[i],
mt76_dma_rx_poll, 64);
mt76_dma_rx_fill(dev, &dev->q_rx[i]);
napi_enable(&dev->napi[i]);
}