From: Andrew Lunn <andrew@lunn.ch>
To: Shenwei Wang <shenwei.wang@nxp.com>
Cc: "David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Jesper Dangaard Brouer <hawk@kernel.org>,
Ilias Apalodimas <ilias.apalodimas@linaro.org>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
John Fastabend <john.fastabend@gmail.com>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
imx@lists.linux.dev
Subject: Re: [PATCH v4 1/2] net: page_pool: export page_pool_stats definition
Date: Tue, 15 Nov 2022 18:12:02 +0100 [thread overview]
Message-ID: <Y3PIYg+VsuBxq5cW@lunn.ch> (raw)
In-Reply-To: <20221115155744.193789-2-shenwei.wang@nxp.com>
On Tue, Nov 15, 2022 at 09:57:43AM -0600, Shenwei Wang wrote:
> The definition of the 'struct page_pool_stats' is required even when
> the CONFIG_PAGE_POOL_STATS is not defined. Otherwise, it is required
> the drivers to handle the case of CONFIG_PAGE_POOL_STATS undefined.
I agree the API is broken, but i think there is a better fix.
There should be a stub of page_pool_get_stats() for when
CONFIG_PAGE_POOL_STATS is disabled.
Nothing actually dereferences struct page_pool_stats when you have
this stub. So it might be enough to simply have
struct page_pool_stats{
};
Andrew
next prev parent reply other threads:[~2022-11-15 17:12 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-15 15:57 [PATCH v4 0/2] net: fec: add xdp and page pool statistics Shenwei Wang
2022-11-15 15:57 ` [PATCH v4 1/2] net: page_pool: export page_pool_stats definition Shenwei Wang
2022-11-15 17:12 ` Andrew Lunn [this message]
2022-11-15 17:18 ` [EXT] " Shenwei Wang
2022-11-15 17:43 ` Andrew Lunn
2022-11-15 17:52 ` Shenwei Wang
2022-11-15 15:57 ` [PATCH v4 2/2] net: fec: add xdp and page pool statistics Shenwei Wang
2022-11-15 17:28 ` Andrew Lunn
2022-11-15 17:53 ` [EXT] " Shenwei Wang
2022-11-15 17:57 ` [PATCH v4 0/2] " Saeed Mahameed
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