linux-kernel - Re: [PATCH net-next v5 13/14] libie: add per-queue Page Pool stats

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Message-ID: <20231129062914.0f895d1c@kernel.org>
Date:   Wed, 29 Nov 2023 06:29:14 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Alexander Lobakin <aleksander.lobakin@...el.com>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Maciej Fijalkowski <maciej.fijalkowski@...el.com>,
        Michal Kubiak <michal.kubiak@...el.com>,
        Larysa Zaremba <larysa.zaremba@...el.com>,
        Alexander Duyck <alexanderduyck@...com>,
        Yunsheng Lin <linyunsheng@...wei.com>,
        "David Christensen" <drc@...ux.vnet.ibm.com>,
        Jesper Dangaard Brouer <hawk@...nel.org>,
        Ilias Apalodimas <ilias.apalodimas@...aro.org>,
        "Paul Menzel" <pmenzel@...gen.mpg.de>, <netdev@...r.kernel.org>,
        <intel-wired-lan@...ts.osuosl.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net-next v5 13/14] libie: add per-queue Page Pool stats

On Wed, 29 Nov 2023 14:40:33 +0100 Alexander Lobakin wrote:
> > Expand the libie generic per-queue stats with the generic Page Pool
> > stats provided by the API itself, when CONFIG_PAGE_POOL_STATS is
> > enabled. When it's not, there'll be no such fields in the stats
> > structure, so no space wasted.  
> 
> Do I get it correctly that after Page Pool Netlink introspection was
> merged, this commit makes no sense and we shouln't add PP stats to the
> drivers private ones?

Yes, 100%.

FWIW I am aware that better tooling would be good so non-developers
could access to the PP Netlink :(  I'm thinking we should clean up 
YNL lib packaging a little and try to convince iproute2 maintainers 
to accept simple CLI built on top of it.