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Message-ID: <c522ca02-4053-3e3d-f25e-2c1482c5a8bd@csgroup.eu>
Date: Mon, 15 Mar 2021 10:16:38 +0100
From: Christophe Leroy <christophe.leroy@...roup.eu>
To: "heying (H)" <heying24@...wei.com>,
Cédric Le Goater <clg@...d.org>,
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
Le 15/03/2021 à 07:51, heying (H) a écrit :
>
>> I think this is the case also for entry_flush. compiling with W=1 will tell you more.
>
> When I use these commands:
>
> make allmodconfig ARCH=powerpc CROSS_COMPILE=powerpc64-linux-gnu-
> make C=2 arch/powerpc/kernel/setup_64.o ARCH=powerpc CROSS_COMPILE=powerpc64-linux-gnu-
>
> I find warnings as followings:
>
> arch/powerpc/kernel/setup_64.c:422:6: warning: symbol 'panic_smp_self_stop' was not declared. Should
> it be static?
> arch/powerpc/kernel/setup_64.c:951:6: warning: symbol 'rfi_flush' was not declared. Should it be static?
> arch/powerpc/kernel/setup_64.c:952:6: warning: symbol 'entry_flush' was not declared. Should it be
> static?
> arch/powerpc/kernel/setup_64.c:953:6: warning: symbol 'uaccess_flush' was not declared. Should it be
> static?
>
> When I use the command "make W=1 arch/powerpc/kernel/setup_64.o ARCH=powerpc
> CROSS_COMPILE=powerpc64-linux-gnu-", warning becomes this:
>
> arch/powerpc/kernel/setup_64.c:422:6: warning: no previous prototype for ‘panic_smp_self_stop’
> [-Wmissing-prototypes]
> void panic_smp_self_stop(void)
> ^~~~~~~~~~~~~~~~~~~
>
> My sparse tool is the latest one with the version "v0.6.3". So, should I fix all the warnings
> reported by sparse?
I think W=1 will only report missing function prototypes.
sparse also reports missing variables prototypes so that's better. All should be fixed.
Christophe
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