From: Sergei Shtylyov <sergei.shtylyov@gmail.com>
To: Masahiro Yamada <masahiroy@kernel.org>,
linux-arch@vger.kernel.org, x86@kernel.org
Cc: linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-alpha@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org,
linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org,
linux-parisc@vger.kernel.org, linux-sh@vger.kernel.org,
linux-um@lists.infradead.org, linux-xtensa@linux-xtensa.org,
linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org
Subject: Re: [PATCH 02/27] x86/syscalls: fix -Wmissing-prototypes warnings from COND_SYSCALL()
Date: Thu, 28 Jan 2021 11:00:29 +0300 [thread overview]
Message-ID: <605cea27-bd69-5b21-f285-2d3d0f6abd23@gmail.com> (raw)
In-Reply-To: <dd37a7f2-55e1-2e96-0c93-4a40980b8ef2@gmail.com>
On 28.01.2021 10:59, Sergei Shtylyov wrote:
[...]
>> Building kernel/sys_ni.c with W=1 omits tons of -Wmissing-prototypes
>
> Emits?
>
>> warnings.
>>
>> $ make W=1 kernel/sys_ni.o
>> [ snip ]
>> CC kernel/sys_ni.o
>> In file included from kernel/sys_ni.c:10:
>> ./arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous
>> prototype for '__x64_sys_io_setup' [-Wmissing-prototypes]
>> 83 | __weak long __##abi##_##name(const struct pt_regs *__unused) \
>> | ^~
>> ./arch/x86/include/asm/syscall_wrapper.h:100:2: note: in expansion of macro
>> '__COND_SYSCALL'
>> 100 | __COND_SYSCALL(x64, sys_##name)
>> | ^~~~~~~~~~~~~~
>> ./arch/x86/include/asm/syscall_wrapper.h:256:2: note: in expansion of macro
>> '__X64_COND_SYSCALL'
>> 256 | __X64_COND_SYSCALL(name) \
>> | ^~~~~~~~~~~~~~~~~~
>> kernel/sys_ni.c:39:1: note: in expansion of macro 'COND_SYSCALL'
>> 39 | COND_SYSCALL(io_setup);
>> | ^~~~~~~~~~~~
>> ./arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous
>> prototype for '__ia32_sys_io_setup' [-Wmissing-prototypes]
>> 83 | __weak long __##abi##_##name(const struct pt_regs *__unused) \
>> | ^~
>> ./arch/x86/include/asm/syscall_wrapper.h:120:2: note: in expansion of macro
>> '__COND_SYSCALL'
>> 120 | __COND_SYSCALL(ia32, sys_##name)
>> | ^~~~~~~~~~~~~~
>> ./arch/x86/include/asm/syscall_wrapper.h:257:2: note: in expansion of macro
>> '__IA32_COND_SYSCALL'
>> 257 | __IA32_COND_SYSCALL(name)
>> | ^~~~~~~~~~~~~~~~~~~
>> kernel/sys_ni.c:39:1: note: in expansion of macro 'COND_SYSCALL'
>> 39 | COND_SYSCALL(io_setup);
>> | ^~~~~~~~~~~~
>> ...
>>
>> __SYS_STUB0() and __SYS_STUBx() defined a few lines above have forward
>> declarations. Let's do likewise for __COND_SYSCALL() to fix the
>> warnings.
>>
>> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
>> ---
>>
>> arch/x86/include/asm/syscall_wrapper.h | 1 +
>> 1 file changed, 1 insertion(+)
>>
>> diff --git a/arch/x86/include/asm/syscall_wrapper.h
>> b/arch/x86/include/asm/syscall_wrapper.h
>> index a84333adeef2..80c08c7d5e72 100644
>> --- a/arch/x86/include/asm/syscall_wrapper.h
>> +++ b/arch/x86/include/asm/syscall_wrapper.h
>> @@ -80,6 +80,7 @@ extern long __ia32_sys_ni_syscall(const struct pt_regs
>> *regs);
>> }
>> #define __COND_SYSCALL(abi, name) \
>> + __weak long __##abi##_##name(const struct pt_regs *__unused); \
>> __weak long __##abi##_##name(const struct pt_regs *__unused) \
>
> Aren't these two lines identical?
Ah, got it! :-)
[...]
MBR, Sergei
next prev parent reply other threads:[~2021-01-28 8:05 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-28 0:50 [PATCH 00/27] arch: syscalls: unifiy all syscalltbl.sh into scripts/syscalltbl.sh Masahiro Yamada
2021-01-28 0:50 ` [PATCH 01/27] scripts: add generic syscalltbl.sh Masahiro Yamada
2021-01-28 1:01 ` Masahiro Yamada
2021-01-28 0:50 ` [PATCH 02/27] x86/syscalls: fix -Wmissing-prototypes warnings from COND_SYSCALL() Masahiro Yamada
2021-01-28 0:55 ` Masahiro Yamada
2021-01-28 7:59 ` Sergei Shtylyov
2021-01-28 8:00 ` Sergei Shtylyov [this message]
2021-02-04 14:16 ` Mickaël Salaün
2021-02-12 15:13 ` Mickaël Salaün
2021-02-13 4:50 ` Masahiro Yamada
2021-01-28 0:50 ` [PATCH 03/27] x86/build: add missing FORCE and fix 'targets' to make if_changed work Masahiro Yamada
2021-01-28 0:50 ` [PATCH 04/27] x86/entry/x32: rename __x32_compat_sys_* to __x64_compat_sys_* Masahiro Yamada
2021-01-28 0:50 ` [PATCH 05/27] x86/syscalls: switch to generic syscalltbl.sh Masahiro Yamada
2021-01-28 0:50 ` [PATCH 06/27] ARM: syscalls: " Masahiro Yamada
2021-01-28 0:50 ` [PATCH 07/27] alpha: add missing FORCE and fix 'targets' to make if_changed work Masahiro Yamada
2021-01-28 0:50 ` [PATCH 08/27] alpha: syscalls: switch to generic syscalltbl.sh Masahiro Yamada
2021-01-28 0:50 ` [PATCH 09/27] ia64: add missing FORCE and fix 'targets' to make if_changed work Masahiro Yamada
2021-01-28 0:50 ` [PATCH 10/27] ia64: syscalls: switch to generic syscalltbl.sh Masahiro Yamada
2021-01-28 0:50 ` [PATCH 11/27] m68k: add missing FORCE and fix 'targets' to make if_changed work Masahiro Yamada
2021-01-28 7:58 ` Geert Uytterhoeven
2021-01-28 0:50 ` [PATCH 12/27] m68k: syscalls: switch to generic syscalltbl.sh Masahiro Yamada
2021-01-28 8:17 ` Geert Uytterhoeven
2021-01-28 0:50 ` [PATCH 13/27] microblaze: add missing FORCE and fix 'targets' to make if_changed work Masahiro Yamada
2021-01-28 0:50 ` [PATCH 14/27] microblaze: syscalls: switch to generic syscalltbl.sh Masahiro Yamada
2021-01-28 0:50 ` [PATCH 15/27] mips: add missing FORCE and fix 'targets' to make if_changed work Masahiro Yamada
2021-01-28 0:50 ` [PATCH 16/27] mips: syscalls: switch to generic syscalltbl.sh Masahiro Yamada
2021-01-28 0:50 ` [PATCH 17/27] parisc: add missing FORCE and fix 'targets' to make if_changed work Masahiro Yamada
2021-01-28 0:51 ` [PATCH 18/27] parisc: syscalls: switch to generic syscalltbl.sh Masahiro Yamada
2021-01-28 0:51 ` [PATCH 19/27] sh: add missing FORCE and fix 'targets' to make if_changed work Masahiro Yamada
2021-01-28 0:51 ` [PATCH 20/27] sh: syscalls: switch to generic syscalltbl.sh Masahiro Yamada
2021-01-28 0:51 ` [PATCH 21/27] sparc: remove wrong comment from arch/sparc/include/asm/Kbuild Masahiro Yamada
2021-02-14 17:00 ` Masahiro Yamada
2021-01-28 0:51 ` [PATCH 22/27] sparc: add missing FORCE and fix 'targets' to make if_changed work Masahiro Yamada
2021-01-28 0:51 ` [PATCH 23/27] sparc: syscalls: switch to generic syscalltbl.sh Masahiro Yamada
2021-01-28 0:51 ` [PATCH 24/27] powerpc: add missing FORCE and fix 'targets' to make if_changed work Masahiro Yamada
2021-01-28 0:51 ` [PATCH 25/27] powerpc: syscalls: switch to generic syscalltbl.sh Masahiro Yamada
2021-01-28 0:51 ` [PATCH 26/27] xtensa: add missing FORCE and fix 'targets' to make if_changed work Masahiro Yamada
2021-01-28 0:51 ` [PATCH 27/27] xtensa: syscalls: switch to generic syscalltbl.sh Masahiro Yamada
2021-01-28 14:03 ` [PATCH 00/27] arch: syscalls: unifiy all syscalltbl.sh into scripts/syscalltbl.sh Anatoly Pugachev
2021-01-28 23:40 ` Masahiro Yamada
2021-02-15 12:03 ` Masahiro Yamada
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