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brcmfmac: Set SDIO workqueue as WQ_HIGHPRI

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This puts tasks submitted to the SDIO workqueue at the head of the queue
and runs them immediately. This gets higher RX throughput with the SDIO
bus.

This was originally submitted as [1]. The original author Wright Feng
reports

> throughput result with 43455(11ac) on 1 core 1.6 Ghz platform is
>     Without WQ_HIGGPRI TX/RX: 293/301 (mbps)
>     With    WQ_HIGHPRI TX/RX: 293/321 (mbps)

I tested this with a 43364(11bgn) on a 1 core 800 MHz platform and got
    Without WQ_HIGHPRI TX/RX: 16/19 (Mbits/sec)
    With    WQ_HIGHPRI TX/RX: 24/20 (MBits/sec)

[1] https://lore.kernel.org/linux-wireless/1584604406-15452-4-git-send-email-wright.feng@cypress.com/

Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Reviewed-by: Arend van Spriel <aspriel@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210802170904.3116223-1-sean.anderson@seco.com
This commit is contained in:
Sean Anderson 2021-08-02 13:09:04 -04:00 committed by Kalle Valo
parent f8d6523891
commit 41b637bac0
1 changed files with 1 additions and 1 deletions
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2
drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
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@ -4451,7 +4451,7 @@ struct brcmf_sdio *brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev)
bus->tx_seq = SDPCM_SEQ_WRAP - 1;
/* single-threaded workqueue */
wq = alloc_ordered_workqueue("brcmf_wq/%s", WQ_MEM_RECLAIM,
wq = alloc_ordered_workqueue("brcmf_wq/%s", WQ_MEM_RECLAIM | WQ_HIGHPRI,
dev_name(&sdiodev->func1->dev));
if (!wq) {
brcmf_err("insufficient memory to create txworkqueue\n");