diff options
| author | Felix Fietkau <nbd@nbd.name> | 2020-08-22 14:41:42 +0200 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2020-09-24 18:10:16 +0200 |
| commit | f8a667a9af91981b051b0b47c01e473fca80ce4f (patch) | |
| tree | 38e0cfd666139b4d8b9572c09aa5637c6e1aea96 /drivers/net/wireless/mediatek/mt76/mt7915/dma.c | |
| parent | 250944596ca1236a2562d791144cf913728371dc (diff) | |
mt76: mt7915: significantly reduce interrupt load
On 7615 and newer, DMA completion only triggers unmap, but not free of queued
skbs, since pointers to packets are queued internally.
Because of that, there is no need to process the main data queue immediately
on DMA completion.
To improve performance, mask out the DMA data queue completion interrupt and
process the queue only when we receive a txfree event.
This brings the number of interrupts under load down to a small fraction.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/mt7915/dma.c')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt7915/dma.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/dma.c b/drivers/net/wireless/mediatek/mt76/mt7915/dma.c index 34e90bb08f0a..bdc694609c01 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/dma.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/dma.c @@ -84,8 +84,6 @@ mt7915_tx_cleanup(struct mt7915_dev *dev) { mt76_queue_tx_cleanup(dev, MT_TXQ_MCU, false); mt76_queue_tx_cleanup(dev, MT_TXQ_MCU_WA, false); - mt76_queue_tx_cleanup(dev, MT_TXQ_PSD, false); - mt76_queue_tx_cleanup(dev, MT_TXQ_BE, false); } static int mt7915_poll_tx(struct napi_struct *napi, int budget) @@ -97,7 +95,7 @@ static int mt7915_poll_tx(struct napi_struct *napi, int budget) mt7915_tx_cleanup(dev); if (napi_complete_done(napi, 0)) - mt7915_irq_enable(dev, MT_INT_TX_DONE_ALL); + mt7915_irq_enable(dev, MT_INT_TX_DONE_MCU); return 0; } @@ -242,7 +240,7 @@ int mt7915_dma_init(struct mt7915_dev *dev) MT_WFDMA1_GLO_CFG_TX_DMA_EN | MT_WFDMA1_GLO_CFG_RX_DMA_EN); /* enable interrupts for TX/RX rings */ - mt7915_irq_enable(dev, MT_INT_RX_DONE_ALL | MT_INT_TX_DONE_ALL | + mt7915_irq_enable(dev, MT_INT_RX_DONE_ALL | MT_INT_TX_DONE_MCU | MT_INT_MCU_CMD); return 0; |