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/openbmc/linux/drivers/nvme/host/ |
H A D | tcp.c | 1a9460ce Wed Jul 03 16:08:04 CDT 2019 Sagi Grimberg <sagi@grimberg.me> nvme-tcp: support simple polling
Simple polling support via socket busy_poll interface. Although we do not shutdown interrupts but simply hammer the socket poll, we can sometimes find completions faster than the normal interrupt driven RX path.
We add per queue nr_cqe counter that resets every time RX path is invoked such that .poll callback can return it to stay consistent with the semantics.
Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> 1a9460ce Wed Jul 03 16:08:04 CDT 2019 Sagi Grimberg <sagi@grimberg.me> nvme-tcp: support simple polling Simple polling support via socket busy_poll interface. Although we do not shutdown interrupts but simply hammer the socket poll, we can sometimes find completions faster than the normal interrupt driven RX path. We add per queue nr_cqe counter that resets every time RX path is invoked such that .poll callback can return it to stay consistent with the semantics. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
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