linux-kernel - Re: [PATCH net-next] net: page_pool: API cleanup and comments

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Message-Id: <20200216.195957.2300038427552527679.davem@davemloft.net>
Date:   Sun, 16 Feb 2020 19:59:57 -0800 (PST)
From:   David Miller <davem@...emloft.net>
To:     ilias.apalodimas@...aro.org
Cc:     netdev@...r.kernel.org, jonathan.lemon@...il.com,
        lorenzo@...nel.org, thomas.petazzoni@...tlin.com,
        jaswinder.singh@...aro.org, peppe.cavallaro@...com,
        alexandre.torgue@...com, joabreu@...opsys.com,
        mcoquelin.stm32@...il.com, hawk@...nel.org, kuba@...nel.org,
        ast@...nel.org, daniel@...earbox.net, john.fastabend@...il.com,
        linux-kernel@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, bpf@...r.kernel.org
Subject: Re: [PATCH net-next] net: page_pool: API cleanup and comments

From: David Miller <davem@...emloft.net>
Date: Sun, 16 Feb 2020 19:53:00 -0800 (PST)

> From: Ilias Apalodimas <ilias.apalodimas@...aro.org>
> Date: Sun, 16 Feb 2020 11:40:55 +0200
> 
>> Functions starting with __ usually indicate those which are exported,
>> but should not be called directly. Update some of those declared in the
>> API and make it more readable.
>> 
>> page_pool_unmap_page() and page_pool_release_page() were doing
>> exactly the same thing. Keep the page_pool_release_page() variant
>> and export it in order to show up on perf logs.
>> Finally rename __page_pool_put_page() to page_pool_put_page() since we
>> can now directly call it from drivers and rename the existing
>> page_pool_put_page() to page_pool_put_full_page() since they do the same
>> thing but the latter is trying to sync the full DMA area.
>> 
>> Also update netsec, mvneta and stmmac drivers which use those functions.
>> 
>> Suggested-by: Jonathan Lemon <jonathan.lemon@...il.com>
>> Signed-off-by: Ilias Apalodimas <ilias.apalodimas@...aro.org>
> 
> Applied to net-next, thanks.

Actually this doesn't compile, please respin:

drivers/net/ethernet/socionext/netsec.c: In function ‘netsec_uninit_pkt_dring’:
drivers/net/ethernet/socionext/netsec.c:1201:4: error: too few arguments to function ‘page_pool_put_page’
    page_pool_put_page(dring->page_pool, page, false);
    ^~~~~~~~~~~~~~~~~~
In file included from drivers/net/ethernet/socionext/netsec.c:17:
./include/net/page_pool.h:172:6: note: declared here
 void page_pool_put_page(struct page_pool *pool, struct page *page,
      ^~~~~~~~~~~~~~~~~~