netdev - Re: [PATCH v2 0/5] sched, net: NUMA-aware CPU spreading interface

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Message-ID: <9b062b28-e6dd-3af1-da02-1bc511ed6939@intel.com>
Date:   Thu, 18 Aug 2022 09:28:59 -0700
From:   Jesse Brandeburg <jesse.brandeburg@...el.com>
To:     Valentin Schneider <vschneid@...hat.com>, <netdev@...r.kernel.org>,
        <linux-rdma@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     Saeed Mahameed <saeedm@...dia.com>,
        Leon Romanovsky <leon@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Yury Norov <yury.norov@...il.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Mel Gorman <mgorman@...e.de>,
        "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
        Barry Song <song.bao.hua@...ilicon.com>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Tony Luck <tony.luck@...el.com>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        "Gal Pressman" <gal@...dia.com>, Tariq Toukan <tariqt@...dia.com>
Subject: Re: [PATCH v2 0/5] sched, net: NUMA-aware CPU spreading interface

On 8/17/2022 10:58 AM, Valentin Schneider wrote:
> Hi folks,
> 
> 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).
> 
> Patch 5/5 is just there to showcase how the thing would be used. If this doesn't
> get hated on, I'll let Tariq pick this up and push it with his networking driver
> changes (with actual changelogs).

I am interested in this work, but it seems that at least on lore and in 
my inbox, patch 3,4,5 didn't show up.