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. -- 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/submittingpatches
