> -----Original Message----- > From: kvalo=codeaurora.org@xxxxxxxxxxxxxxxxx > <kvalo=codeaurora.org@xxxxxxxxxxxxxxxxx> On Behalf Of Kalle Valo > Sent: Friday, November 12, 2021 3:22 PM > To: Praneesh P (QUIC) <quic_ppranees@xxxxxxxxxxx> > Cc: ath11k@xxxxxxxxxxxxxxxxxxx; linux-wireless@xxxxxxxxxxxxxxx; Praneesh P > (QUIC) <quic_ppranees@xxxxxxxxxxx>; Sriram R (QUIC) > <quic_srirrama@xxxxxxxxxxx> > Subject: Re: [PATCH] ath11k: Add provision to configure rx hashmap > > P Praneesh <quic_ppranees@xxxxxxxxxxx> 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@xxxxxxxxxxx> > > Signed-off-by: Sriram R <quic_srirrama@xxxxxxxxxxx> > > Signed-off-by: P Praneesh <quic_ppranees@xxxxxxxxxxx> > > debugfs is for debugging and testing. To me it looks like this feature is for > configuring the driver, not debugging. > [ppranees] This debugfs only used for RX path debugging purpose during performance test, By default we intent to use default hash map. > -- > https://patchwork.kernel.org/project/linux-wireless/patch/1635164316-27055- > 1-git-send-email-quic_ppranees@xxxxxxxxxxx/ > > https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatch > es
