From: kbuild test robot <lkp@intel.com>
To: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Cc: kbuild-all@01.org, Linus Torvalds <torvalds@linux-foundation.org>,
linux-kernel@vger.kernel.org,
Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>,
Eli Friedman <efriedma@codeaurora.org>,
Christopher Li <sparse@chrisli.org>,
Kees Cook <keescook@chromium.org>, Ingo Molnar <mingo@kernel.org>,
Geert Uytterhoeven <geert@linux-m68k.org>,
Arnd Bergmann <arnd@arndb.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Masahiro Yamada <yamada.masahiro@socionext.com>,
Joe Perches <joe@perches.com>,
Dominique Martinet <asmadeus@codewreck.org>,
Nick Desaulniers <ndesaulniers@google.com>
Subject: Re: [PATCH 3/7] Compiler Attributes: remove unneeded tests
Date: Sat, 1 Sep 2018 16:16:28 +0800 [thread overview]
Message-ID: <201809011424.cgRFPvtV%fengguang.wu@intel.com> (raw)
In-Reply-To: <20180831170514.24665-3-miguel.ojeda.sandonis@gmail.com>
[-- Attachment #1: Type: text/plain, Size: 9925 bytes --]
Hi Miguel,
I love your patch! Yet something to improve:
[auto build test ERROR on linus/master]
[also build test ERROR on v4.19-rc1 next-20180831]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Miguel-Ojeda/Compiler-Attributes-remove-unused-attributes/20180901-125644
config: i386-tinyconfig (attached as .config)
compiler: gcc-7 (Debian 7.3.0-16) 7.3.0
reproduce:
# save the attached .config to linux build tree
make ARCH=i386
Note: the linux-review/Miguel-Ojeda/Compiler-Attributes-remove-unused-attributes/20180901-125644 HEAD 4327b9ceea1b6be41cbce2c51370a365fc6a52cc builds fine.
It only hurts bisectibility.
All error/warnings (new ones prefixed by >>):
In file included from include/uapi/linux/swab.h:7:0,
from include/linux/swab.h:5,
from include/uapi/linux/byteorder/little_endian.h:13,
from include/linux/byteorder/little_endian.h:5,
from arch/x86/include/uapi/asm/byteorder.h:5,
from include/asm-generic/bitops/le.h:6,
from arch/x86/include/asm/bitops.h:521,
from include/linux/bitops.h:19,
from include/linux/kernel.h:11,
from include/asm-generic/bug.h:18,
from arch/x86/include/asm/bug.h:83,
from include/linux/bug.h:5,
from include/linux/page-flags.h:10,
from kernel/bounds.c:10:
>> arch/x86/include/uapi/asm/swab.h:8:15: error: unknown type name '__attribute_const__'
static inline __attribute_const__ __u32 __arch_swab32(__u32 val)
^~~~~~~~~~~~~~~~~~~
>> arch/x86/include/uapi/asm/swab.h:8:41: error: expected '=', ',', ';', 'asm' or '__attribute__' before '__arch_swab32'
static inline __attribute_const__ __u32 __arch_swab32(__u32 val)
^~~~~~~~~~~~~
arch/x86/include/uapi/asm/swab.h:15:15: error: unknown type name '__attribute_const__'
static inline __attribute_const__ __u64 __arch_swab64(__u64 val)
^~~~~~~~~~~~~~~~~~~
>> arch/x86/include/uapi/asm/swab.h:15:41: error: expected '=', ',', ';', 'asm' or '__attribute__' before '__arch_swab64'
static inline __attribute_const__ __u64 __arch_swab64(__u64 val)
^~~~~~~~~~~~~
In file included from include/linux/swab.h:5:0,
from include/uapi/linux/byteorder/little_endian.h:13,
from include/linux/byteorder/little_endian.h:5,
from arch/x86/include/uapi/asm/byteorder.h:5,
from include/asm-generic/bitops/le.h:6,
from arch/x86/include/asm/bitops.h:521,
from include/linux/bitops.h:19,
from include/linux/kernel.h:11,
from include/asm-generic/bug.h:18,
from arch/x86/include/asm/bug.h:83,
from include/linux/bug.h:5,
from include/linux/page-flags.h:10,
from kernel/bounds.c:10:
>> include/uapi/linux/swab.h:47:15: error: unknown type name '__attribute_const__'
static inline __attribute_const__ __u16 __fswab16(__u16 val)
^~~~~~~~~~~~~~~~~~~
>> include/uapi/linux/swab.h:47:41: error: expected '=', ',', ';', 'asm' or '__attribute__' before '__fswab16'
static inline __attribute_const__ __u16 __fswab16(__u16 val)
^~~~~~~~~
include/uapi/linux/swab.h:56:15: error: unknown type name '__attribute_const__'
static inline __attribute_const__ __u32 __fswab32(__u32 val)
^~~~~~~~~~~~~~~~~~~
>> include/uapi/linux/swab.h:56:41: error: expected '=', ',', ';', 'asm' or '__attribute__' before '__fswab32'
static inline __attribute_const__ __u32 __fswab32(__u32 val)
^~~~~~~~~
include/uapi/linux/swab.h:65:15: error: unknown type name '__attribute_const__'
static inline __attribute_const__ __u64 __fswab64(__u64 val)
^~~~~~~~~~~~~~~~~~~
>> include/uapi/linux/swab.h:65:41: error: expected '=', ',', ';', 'asm' or '__attribute__' before '__fswab64'
static inline __attribute_const__ __u64 __fswab64(__u64 val)
^~~~~~~~~
include/uapi/linux/swab.h:78:15: error: unknown type name '__attribute_const__'
static inline __attribute_const__ __u32 __fswahw32(__u32 val)
^~~~~~~~~~~~~~~~~~~
>> include/uapi/linux/swab.h:78:41: error: expected '=', ',', ';', 'asm' or '__attribute__' before '__fswahw32'
static inline __attribute_const__ __u32 __fswahw32(__u32 val)
^~~~~~~~~~
include/uapi/linux/swab.h:87:15: error: unknown type name '__attribute_const__'
static inline __attribute_const__ __u32 __fswahb32(__u32 val)
^~~~~~~~~~~~~~~~~~~
>> include/uapi/linux/swab.h:87:41: error: expected '=', ',', ';', 'asm' or '__attribute__' before '__fswahb32'
static inline __attribute_const__ __u32 __fswahb32(__u32 val)
^~~~~~~~~~
include/uapi/linux/swab.h: In function '__swahw32p':
>> include/uapi/linux/swab.h:144:2: error: implicit declaration of function '__fswahw32'; did you mean '__swahw32'? [-Werror=implicit-function-declaration]
__fswahw32(x))
^
>> include/uapi/linux/swab.h:207:9: note: in expansion of macro '__swahw32'
return __swahw32(*p);
^~~~~~~~~
include/uapi/linux/swab.h: In function '__swahb32p':
>> include/uapi/linux/swab.h:155:2: error: implicit declaration of function '__fswahb32'; did you mean '__swahb32'? [-Werror=implicit-function-declaration]
__fswahb32(x))
^
>> include/uapi/linux/swab.h:222:9: note: in expansion of macro '__swahb32'
return __swahb32(*p);
^~~~~~~~~
In file included from include/linux/kernel.h:12:0,
from include/asm-generic/bug.h:18,
from arch/x86/include/asm/bug.h:83,
from include/linux/bug.h:5,
from include/linux/page-flags.h:10,
from kernel/bounds.c:10:
include/linux/log2.h: At top level:
>> include/linux/log2.h:202:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'int'
int __order_base_2(unsigned long n)
^~~
cc1: some warnings being treated as errors
make[2]: *** [kernel/bounds.s] Error 1
make[2]: Target '__build' not remade because of errors.
make[1]: *** [prepare0] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [sub-make] Error 2
vim +/__attribute_const__ +8 arch/x86/include/uapi/asm/swab.h
5d30a683 arch/x86/include/asm/swab.h Harvey Harrison 2009-01-06 7
5d30a683 arch/x86/include/asm/swab.h Harvey Harrison 2009-01-06 @8 static inline __attribute_const__ __u32 __arch_swab32(__u32 val)
5d30a683 arch/x86/include/asm/swab.h Harvey Harrison 2009-01-06 9 {
e5bb8ad8 arch/x86/include/asm/swab.h H. Peter Anvin 2012-11-28 10 asm("bswapl %0" : "=r" (val) : "0" (val));
5d30a683 arch/x86/include/asm/swab.h Harvey Harrison 2009-01-06 11 return val;
5d30a683 arch/x86/include/asm/swab.h Harvey Harrison 2009-01-06 12 }
5d30a683 arch/x86/include/asm/swab.h Harvey Harrison 2009-01-06 13 #define __arch_swab32 __arch_swab32
5d30a683 arch/x86/include/asm/swab.h Harvey Harrison 2009-01-06 14
5d30a683 arch/x86/include/asm/swab.h Harvey Harrison 2009-01-06 @15 static inline __attribute_const__ __u64 __arch_swab64(__u64 val)
5d30a683 arch/x86/include/asm/swab.h Harvey Harrison 2009-01-06 16 {
5d30a683 arch/x86/include/asm/swab.h Harvey Harrison 2009-01-06 17 #ifdef __i386__
5d30a683 arch/x86/include/asm/swab.h Harvey Harrison 2009-01-06 18 union {
5d30a683 arch/x86/include/asm/swab.h Harvey Harrison 2009-01-06 19 struct {
5d30a683 arch/x86/include/asm/swab.h Harvey Harrison 2009-01-06 20 __u32 a;
5d30a683 arch/x86/include/asm/swab.h Harvey Harrison 2009-01-06 21 __u32 b;
5d30a683 arch/x86/include/asm/swab.h Harvey Harrison 2009-01-06 22 } s;
5d30a683 arch/x86/include/asm/swab.h Harvey Harrison 2009-01-06 23 __u64 u;
5d30a683 arch/x86/include/asm/swab.h Harvey Harrison 2009-01-06 24 } v;
5d30a683 arch/x86/include/asm/swab.h Harvey Harrison 2009-01-06 25 v.u = val;
5d30a683 arch/x86/include/asm/swab.h Harvey Harrison 2009-01-06 26 asm("bswapl %0 ; bswapl %1 ; xchgl %0,%1"
5d30a683 arch/x86/include/asm/swab.h Harvey Harrison 2009-01-06 27 : "=r" (v.s.a), "=r" (v.s.b)
5d30a683 arch/x86/include/asm/swab.h Harvey Harrison 2009-01-06 28 : "0" (v.s.a), "1" (v.s.b));
5d30a683 arch/x86/include/asm/swab.h Harvey Harrison 2009-01-06 29 return v.u;
5d30a683 arch/x86/include/asm/swab.h Harvey Harrison 2009-01-06 30 #else /* __i386__ */
e5bb8ad8 arch/x86/include/asm/swab.h H. Peter Anvin 2012-11-28 31 asm("bswapq %0" : "=r" (val) : "0" (val));
5d30a683 arch/x86/include/asm/swab.h Harvey Harrison 2009-01-06 32 return val;
5d30a683 arch/x86/include/asm/swab.h Harvey Harrison 2009-01-06 33 #endif
5d30a683 arch/x86/include/asm/swab.h Harvey Harrison 2009-01-06 34 }
5d30a683 arch/x86/include/asm/swab.h Harvey Harrison 2009-01-06 35 #define __arch_swab64 __arch_swab64
5d30a683 arch/x86/include/asm/swab.h Harvey Harrison 2009-01-06 36
:::::: The code at line 8 was first introduced by commit
:::::: 5d30a683888c60b8f93bef3ddc139d1a91ca58f4 x86: introduce asm/swab.h
:::::: TO: Harvey Harrison <harvey.harrison@gmail.com>
:::::: CC: Linus Torvalds <torvalds@linux-foundation.org>
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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next prev parent reply other threads:[~2018-09-01 8:20 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-31 17:05 [PATCH 1/7] Compiler Attributes: remove unused attributes Miguel Ojeda
2018-08-31 17:05 ` [PATCH 2/7] Compiler Attributes: use the no-underscores syntax Miguel Ojeda
2018-08-31 18:51 ` Nick Desaulniers
2018-08-31 19:17 ` Miguel Ojeda
2018-08-31 21:49 ` Rasmus Villemoes
2018-08-31 22:10 ` Miguel Ojeda
2018-08-31 22:40 ` Miguel Ojeda
2018-09-03 6:42 ` Geert Uytterhoeven
2018-09-03 10:40 ` Miguel Ojeda
2018-08-31 17:05 ` [PATCH 3/7] Compiler Attributes: remove unneeded tests Miguel Ojeda
2018-08-31 21:10 ` Nick Desaulniers
2018-09-01 8:16 ` kbuild test robot [this message]
2018-09-01 9:56 ` kbuild test robot
2018-08-31 17:05 ` [PATCH 4/7] Compiler Attributes: homogenize __must_be_array Miguel Ojeda
2018-08-31 21:16 ` Nick Desaulniers
2018-09-01 9:17 ` Luc Van Oostenryck
2018-09-01 12:11 ` Miguel Ojeda
2018-08-31 17:05 ` [PATCH 5/7] Compiler Attributes: naked was fixed in gcc 4.6 Miguel Ojeda
2018-08-31 19:48 ` Arnd Bergmann
2018-08-31 20:26 ` Miguel Ojeda
2018-08-31 17:05 ` [PATCH 6/7] Compiler Attributes: remove unneeded sparse (__CHECKER__) tests Miguel Ojeda
2018-08-31 21:38 ` Nick Desaulniers
2018-08-31 21:55 ` Miguel Ojeda
2018-08-31 22:39 ` Luc Van Oostenryck
2018-08-31 17:05 ` [PATCH 7/7] Compiler Attributes: use feature checks instead of version checks Miguel Ojeda
2018-08-31 23:07 ` Nick Desaulniers
2018-09-01 13:38 ` Miguel Ojeda
2018-09-01 18:39 ` Greg KH
2018-09-01 19:15 ` Miguel Ojeda
2018-09-01 9:24 ` kbuild test robot
2018-09-01 9:51 ` kbuild test robot
2018-09-01 9:56 ` Luc Van Oostenryck
2018-09-01 12:58 ` Miguel Ojeda
2018-09-01 10:14 ` Dominique Martinet
2018-09-01 12:55 ` Miguel Ojeda
2018-09-01 14:17 ` Dominique Martinet
2018-09-03 18:03 ` Miguel Ojeda
2018-08-31 17:27 ` [PATCH 1/7] Compiler Attributes: remove unused attributes Joe Perches
2018-08-31 18:43 ` Nick Desaulniers
2018-08-31 18:53 ` Joe Perches
2018-08-31 20:23 ` Miguel Ojeda
2018-08-31 21:27 ` Nick Desaulniers
2018-09-02 19:54 ` Arnd Bergmann
2018-09-03 11:16 ` Miguel Ojeda
2018-08-31 18:39 ` Nick Desaulniers
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