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Miller" , Eric Dumazet , Paolo Abeni , Simon Horman , Kuniyuki Iwashima , Willem de Bruijn , Neal Cardwell , David Ahern , Arnd Bergmann , Jonathan Corbet , Andrew Lunn , Shuah Khan , Donald Hunter , Mina Almasry , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, Stanislav Fomichev , asml.silence@gmail.com, matttbe@kernel.org, skhawaja@google.com, Bobby Eshleman Subject: Re: [PATCH net-next v8 0/5] net: devmem: improve cpu cost of RX token management Message-ID: References: <20260107-scratch-bobbyeshleman-devmem-tcp-token-upstream-v8-0-92c968631496@meta.com> <20260107193013.0984ab97@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20260107193013.0984ab97@kernel.org> On Wed, Jan 07, 2026 at 07:30:13PM -0800, Jakub Kicinski wrote: > On Wed, 07 Jan 2026 16:57:34 -0800 Bobby Eshleman wrote: > > This series improves the CPU cost of RX token management by adding an > > attribute to NETDEV_CMD_BIND_RX that configures sockets using the > > binding to avoid the xarray allocator and instead use a per-binding niov > > array and a uref field in niov. > > net/ipv4/tcp.c:2600:41: error: implicit declaration of function ‘net_devmem_dmabuf_binding_get’; did you mean ‘net_devmem_dmabuf_binding_put’? [-Wimplicit-function-declaration] > 2600 | net_devmem_dmabuf_binding_get(binding); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > | net_devmem_dmabuf_binding_put > -- > pw-bot: cr I see that net_devmem_dmabuf_binding_get() is lacking a stub for CONFIG_NET_DEVMEM=n ... Just curious how pw works... is this a randconfig catch? I ask because all of the build targets pass for this series (build_allmodconfig_warn, build_clang, etc.. locally and on patchwork.kernel.org), and if there is a config that pw uses that I'm missing in my local checks I'd like to add it. Best, Bobby