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Message-ID: <a06a0dc8-c717-da4c-c5ad-eaf56bbbd896@kaod.org>
Date: Fri, 12 Mar 2021 14:33:39 +0100
From: Cédric Le Goater <clg@...d.org>
To: He Ying <heying24@...wei.com>, <mpe@...erman.id.au>,
<benh@...nel.crashing.org>, <paulus@...ba.org>,
<npiggin@...il.com>, <dja@...ens.net>, <akpm@...ux-foundation.org>,
<rppt@...nel.org>, <aneesh.kumar@...ux.ibm.com>
CC: <johnny.chenyi@...wei.com>, <linuxppc-dev@...ts.ozlabs.org>,
<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] powerpc: define the variable 'uaccess_flush' as static
On 3/12/21 12:06 PM, He Ying wrote:
> The variable 'uaccess_fulsh' is not referenced outside the file. Perhaps we
> should define it as static to avoid the warning as follows:
>
> arch/powerpc/kernel/setup_64.c:953:6: warning: symbol 'uaccess_flush'
> was not declared. Should it be static?
>
> Reported-by: Hulk Robot <hulkci@...wei.com>
> Signed-off-by: He Ying <heying24@...wei.com>
> ---
> arch/powerpc/kernel/setup_64.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
> index 560ed8b975e7..22aca271496b 100644
> --- a/arch/powerpc/kernel/setup_64.c
> +++ b/arch/powerpc/kernel/setup_64.c
> @@ -950,7 +950,7 @@ static bool no_entry_flush;
> static bool no_uaccess_flush;
> bool rfi_flush;
> bool entry_flush;
I think this is the case also for entry_flush. compiling with W=1 will tell you more.
Thanks,
C.
> -bool uaccess_flush;
> +static bool uaccess_flush;
> DEFINE_STATIC_KEY_FALSE(uaccess_flush_key);
> EXPORT_SYMBOL(uaccess_flush_key);
>
>
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