From: Kalle Valo <kvalo@codeaurora.org>
To: P Praneesh <quic_ppranees@quicinc.com>
Cc: <ath11k@lists.infradead.org>, <linux-wireless@vger.kernel.org>,
P Praneesh <quic_ppranees@quicinc.com>,
Sriram R <quic_srirrama@quicinc.com>
Subject: Re: [PATCH] ath11k: Add provision to configure rx hashmap
Date: Fri, 12 Nov 2021 09:51:42 +0000 (UTC) [thread overview]
Message-ID: <163671069706.11814.3105845576240199326.kvalo@codeaurora.org> (raw)
In-Reply-To: <1635164316-27055-1-git-send-email-quic_ppranees@quicinc.com>
P Praneesh <quic_ppranees@quicinc.com> wrote:
> Currently the hashmap is set to default during REO setup and all REO
> rings are equally distributed across 32 hash values.
>
> In multiple radio cases, 40MHz+80MHz+160MHz, distributing received
> packets across all the CPU will cause CPU overhead. In this case,
> during runtime we can span 40MHz and 80MHz among 2 cores and remaining
> 2 cores are equally distributed for 160MHz by using register mapping.
>
> Add provision to configure the hashmap during runtime through debugfs
> for improving flexibility to control the destination HW rx queues/rings,
> so that affinity could be used to assign those interrupts to specific
> rings. Setting 0 will disable hash based steering.
>
> echo "hashmap" > /sys/kernel/debug/ath11k/ipq8074\ hw2.0/rx_hash
>
> Developers who are aware of hardware register mapping can leverage
> this rx_hash debugfs.
>
> Tested-on: QCN9074 hw1.0 PCI WLAN.HK.2.4.0.1.r2-00012-QCAHKSWPL_SILICONZ-1
> Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.4.0.1-01695-QCAHKSWPL_SILICONZ-1
>
> Co-developed-by: Sriram R <quic_srirrama@quicinc.com>
> Signed-off-by: Sriram R <quic_srirrama@quicinc.com>
> Signed-off-by: P Praneesh <quic_ppranees@quicinc.com>
debugfs is for debugging and testing. To me it looks like this feature is for
configuring the driver, not debugging.
--
https://patchwork.kernel.org/project/linux-wireless/patch/1635164316-27055-1-git-send-email-quic_ppranees@quicinc.com/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
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next prev parent reply other threads:[~2021-11-12 9:52 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-25 12:18 [PATCH] ath11k: Add provision to configure rx hashmap P Praneesh
2021-11-12 9:51 ` Kalle Valo [this message]
2021-12-01 4:52 ` Praneesh P (QUIC)
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