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[204.195.123.141]) by smtp.gmail.com with ESMTPSA id k12-20020aa7998c000000b006e632025bcdsm4542433pfh.138.2024.03.11.09.41.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 11 Mar 2024 09:41:45 -0700 (PDT) Date: Mon, 11 Mar 2024 09:41:42 -0700 From: Stephen Hemminger To: Jakub Kicinski Cc: Shradha Gupta , Haiyang Zhang , Shradha Gupta , "linux-kernel@vger.kernel.org" , "linux-hyperv@vger.kernel.org" , "linux-rdma@vger.kernel.org" , "netdev@vger.kernel.org" , Eric Dumazet , Paolo Abeni , Ajay Sharma , Leon Romanovsky , Thomas Gleixner , Sebastian Andrzej Siewior , KY Srinivasan , Wei Liu , Dexuan Cui , Long Li , Michael Kelley Subject: Re: [PATCH] net :mana : Add per-cpu stats for MANA device Message-ID: <20240311094142.3bbe7d7b@hermes.local> In-Reply-To: <20240311085126.648f42e0@kernel.org> References: <1709823132-22411-1-git-send-email-shradhagupta@linux.microsoft.com> <20240307072923.6cc8a2ba@kernel.org> <20240307090145.2fc7aa2e@kernel.org> <20240308112244.391b3779@kernel.org> <20240311041950.GA19647@linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.internal.cloudapp.net> <20240311085126.648f42e0@kernel.org> Precedence: bulk X-Mailing-List: linux-hyperv@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Mon, 11 Mar 2024 08:51:26 -0700 Jakub Kicinski wrote: > On Sun, 10 Mar 2024 21:19:50 -0700 Shradha Gupta wrote: > > > Seems unlikely, but if it does work we should enable it for all > > > devices, no driver by driver. > > You mean, if the usecase seems valid we should try to extend the framework > > mentioned by Rahul (https://lore.kernel.org/lkml/20240307072923.6cc8a2ba@kernel.org/) > > to include these stats as well? > > "framework" is a big word, but yes, add a netlink command to get > pcpu stats. Let's focus on the usefulness before investing time > in a rewrite, tho. Couldn't userspace do the same thing by looking at /proc/interrupts and PCI info?