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[2620:137:e000::1:20]) by mx.google.com with ESMTP id b6-20020aa7c6c6000000b0045db2dcff0esi14038840eds.594.2022.11.02.20.21.25; Wed, 02 Nov 2022 20:21:49 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=nM6ajyfy; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230193AbiKCC4e (ORCPT + 97 others); Wed, 2 Nov 2022 22:56:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43972 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230075AbiKCC4X (ORCPT ); Wed, 2 Nov 2022 22:56:23 -0400 Received: from sin.source.kernel.org (sin.source.kernel.org [145.40.73.55]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 09DD41116B; Wed, 2 Nov 2022 19:56:21 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sin.source.kernel.org (Postfix) with ESMTPS id 71CBACE24F1; Thu, 3 Nov 2022 02:56:20 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CB88CC433D6; Thu, 3 Nov 2022 02:56:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1667444178; bh=tD7HISYbOkSJc2+ZVHlEVkAOqJHo5AkPqZ+MZ6h6daU=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=nM6ajyfyLprHH/c2CXEK4niMZiDKOw0wjQmQRIR18HHlgpdfMgNBCY+4cO6qUxOK2 Jd8YjyLkNjH/bWK+DfFaPcxdKxBrwwdCKzEK3bCGUmn+OWyv5fPeKzeJSWc5yBfPza v5z3VGza6WHThHKCY8kRuCAnHgv1GG8PW/ef30EF71mtMl2fDHIUgQ44XfhO3ouong vhE2nvLUEl3QzKc8KTZHiZ4A+nqvdMRWKzZqm+89dI7KFsiptfcxzglwA6IqTGXuth XGgqrw9K4k2Q0DPMy4uXB6X/o+a9c3XdjT1OShC/ZRdvgDfAX4Jc35HMbKY7Nm1cp7 x5CRcT5j6hi7w== Date: Wed, 2 Nov 2022 19:56:16 -0700 From: Jakub Kicinski To: Valentin Schneider Cc: netdev@vger.kernel.org, linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org, Saeed Mahameed , Leon Romanovsky , "David S. Miller" , Eric Dumazet , Paolo Abeni , Yury Norov , Andy Shevchenko , Rasmus Villemoes , Ingo Molnar , Peter Zijlstra , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Mel Gorman , Greg Kroah-Hartman , Heiko Carstens , Tony Luck , Jonathan Cameron , Gal Pressman , Tariq Toukan , Jesse Brandeburg Subject: Re: [PATCH v6 0/3] sched, net: NUMA-aware CPU spreading interface Message-ID: <20221102195616.6f55c894@kernel.org> In-Reply-To: <20221028164959.1367250-1-vschneid@redhat.com> References: <20221028164959.1367250-1-vschneid@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-8.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 28 Oct 2022 17:49:56 +0100 Valentin Schneider wrote: > Tariq pointed out in [1] that drivers allocating IRQ vectors would benefit > from having smarter NUMA-awareness (cpumask_local_spread() doesn't quite cut > it). > > The proposed interface involved an array of CPUs and a temporary cpumask, and > being my difficult self what I'm proposing here is an interface that doesn't > require any temporary storage other than some stack variables (at the cost of > one wild macro). > > [1]: https://lore.kernel.org/all/20220728191203.4055-1-tariqt@nvidia.com/ Not sure who's expected to take these, no preference here so: Acked-by: Jakub Kicinski Thanks for ironing it out!