From: Martin Schwidefsky <schwidefsky@de.ibm.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>,
clang-built-linux@googlegroups.com,
Nick Desaulniers <ndesaulniers@google.com>,
Nathan Chancellor <natechancellor@gmail.com>,
linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 08/12] s390: syscall_wrapper: avoid clang warning
Date: Wed, 10 Apr 2019 18:00:44 +0200 [thread overview]
Message-ID: <20190410180044.22fbba3f@mschwideX1> (raw)
In-Reply-To: <20190408212648.2407234-8-arnd@arndb.de>
On Mon, 8 Apr 2019 23:26:21 +0200
Arnd Bergmann <arnd@arndb.de> wrote:
> Building system calls with clang results in a warning
> about an alias from a global function to a static one:
>
> ../fs/namei.c:3847:1: warning: unused function '__se_sys_mkdirat' [-Wunused-function]
> SYSCALL_DEFINE3(mkdirat, int, dfd, const char __user *, pathname, umode_t, mode)
> ^
> ../include/linux/syscalls.h:219:36: note: expanded from macro 'SYSCALL_DEFINE3'
> #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
> ^
> ../include/linux/syscalls.h:228:2: note: expanded from macro 'SYSCALL_DEFINEx'
> __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
> ^
> ../arch/s390/include/asm/syscall_wrapper.h:126:18: note: expanded from macro '__SYSCALL_DEFINEx'
> asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
> ^
> <scratch space>:31:1: note: expanded from here
> __se_sys_mkdirat
> ^
>
> The only reference to the static __se_sys_mkdirat() here is the alias, but
> this only gets evaluated later. Making this function global as well avoids
> the warning.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Added to s390/linux:features for the next merge window. Thanks.
--
blue skies,
Martin.
"Reality continues to ruin my life." - Calvin.
next prev parent reply other threads:[~2019-04-10 16:00 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-08 21:26 [PATCH 01/12] s390: remove -fno-strength-reduce flag Arnd Bergmann
2019-04-08 21:26 ` [PATCH 02/12] s390: don't build vdso32 with clang Arnd Bergmann
2019-04-10 15:57 ` Martin Schwidefsky
2019-04-10 16:26 ` Nick Desaulniers
2019-04-10 19:00 ` Arnd Bergmann
2019-04-08 21:26 ` [PATCH 03/12] s390: purgatory: pass --target option to clang Arnd Bergmann
2019-04-08 22:03 ` Nathan Chancellor
2019-04-09 6:43 ` Arnd Bergmann
2019-04-09 16:30 ` Nathan Chancellor
2019-04-09 18:11 ` Nick Desaulniers
2019-04-08 21:26 ` [PATCH 04/12] s390: qeth: address type mismatch warning Arnd Bergmann
2019-04-08 22:16 ` Nathan Chancellor
2019-04-09 6:44 ` Arnd Bergmann
2019-04-10 15:58 ` Martin Schwidefsky
2019-04-08 21:26 ` [PATCH 05/12] s390: zcrypt: initialize variables before_use Arnd Bergmann
2019-04-08 22:31 ` Nathan Chancellor
2019-04-09 9:54 ` Harald Freudenberger
2019-04-09 10:13 ` Arnd Bergmann
2019-04-10 15:59 ` Martin Schwidefsky
2019-04-10 18:57 ` Arnd Bergmann
2019-04-11 7:40 ` Martin Schwidefsky
2019-04-08 21:26 ` [PATCH 06/12] s390: ctcm: fix ctcm_new_device error return code Arnd Bergmann
2019-04-08 22:33 ` Nathan Chancellor
2019-04-10 16:00 ` Martin Schwidefsky
2019-04-08 21:26 ` [PATCH 07/12] s390: cio: fix cio_irb declaration Arnd Bergmann
2019-04-08 22:35 ` Nathan Chancellor
2019-04-09 13:13 ` Sebastian Ott
2019-04-08 21:26 ` [PATCH 08/12] s390: syscall_wrapper: avoid clang warning Arnd Bergmann
2019-04-10 16:00 ` Martin Schwidefsky [this message]
2019-04-08 21:26 ` [PATCH 09/12] s390: make __load_psw_mask work with clang Arnd Bergmann
2019-04-10 16:01 ` Martin Schwidefsky
2019-04-08 21:26 ` [PATCH 10/12] s390: avoid __builtin_return_address(n) on clang Arnd Bergmann
2019-04-10 16:03 ` Martin Schwidefsky
2019-04-10 16:14 ` Steven Rostedt
2019-04-10 19:07 ` Arnd Bergmann
2019-04-11 7:32 ` Martin Schwidefsky
2019-04-08 21:26 ` [PATCH 11/12] s390: make chkbss work with clang Arnd Bergmann
2019-04-10 16:02 ` Martin Schwidefsky
2019-04-08 21:26 ` [PATCH 12/12] [PROBABLY WRONG] s390: void '0' constraint in inline assembly Arnd Bergmann
2019-04-10 13:55 ` Martin Schwidefsky
2019-04-10 16:35 ` Nick Desaulniers
2019-04-10 18:55 ` Arnd Bergmann
2019-04-10 15:57 ` [PATCH 01/12] s390: remove -fno-strength-reduce flag Martin Schwidefsky
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