linux-kernel - Re: [PATCH v3] mm/percpu: fix 'defined but not used' warning

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Message-ID: <20200715115043.45a505ca@canb.auug.org.au>
Date:   Wed, 15 Jul 2020 11:50:43 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Bixuan Cui <cuibixuan@...wei.com>
Cc:     <akpm@...ux-foundation.org>, <linux-mm@...ck.org>,
        <linux-kernel@...r.kernel.org>, <linux-next@...r.kernel.org>,
        <john.wanghui@...wei.com>, Roman Gushchin <guro@...com>
Subject: Re: [PATCH v3] mm/percpu: fix 'defined but not used' warning

Hi all,

On Wed, 15 Jul 2020 08:25:19 +0800 Bixuan Cui <cuibixuan@...wei.com> wrote:
>
> Gcc report the following warning without CONFIG_MEMCG_KMEM:
> 
> mm/percpu-internal.h:145:29: warning: 'pcpu_chunk_type' defined
> but not used [-Wunused-function]
>  static enum pcpu_chunk_type pcpu_chunk_type(struct pcpu_chunk *chunk)
>                              ^~~~~~~~~~~~~~~
> 
> Add 'inline' to pcpu_chunk_type(),pcpu_is_memcg_chunk() and
> pcpu_chunk_list() to clear warning.
> 
> Acked-by: Roman Gushchin <guro@...com>
> Suggested-by: Stephen Rothwell <sfr@...b.auug.org.au>
> Signed-off-by: Bixuan Cui <cuibixuan@...wei.com>
> ---
>  mm/percpu-internal.h | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)

I have added this patch to linux-next today.

-- 
Cheers,
Stephen Rothwell

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