From: kernel test robot <lkp@intel.com>
To: kbuild-all@lists.01.org
Subject: [mark-rutland:atomics/arch-atomic 1/25] include/linux/atomic-fallback.h:2575: warning: "arch_atomic64_dec_if_positive" redefined
Date: Wed, 28 Apr 2021 03:01:23 +0800 [thread overview]
Message-ID: <202104280317.eFdEBfMT-lkp@intel.com> (raw)
[-- Attachment #1: Type: text/plain, Size: 33025 bytes --]
tree: https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git atomics/arch-atomic
head: a01b575b1e6ed7458c510cc9f67ca8f48dadb1e4
commit: 4fe0b1c094b5f98877e26aeb41cb0dec2dc44ec6 [1/25] locking/atomic: make ARCH_ATOMIC a Kconfig symbol
config: um-allnoconfig (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
# https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git/commit/?id=4fe0b1c094b5f98877e26aeb41cb0dec2dc44ec6
git remote add mark-rutland https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git
git fetch --no-tags mark-rutland atomics/arch-atomic
git checkout 4fe0b1c094b5f98877e26aeb41cb0dec2dc44ec6
# save the attached .config to linux build tree
make W=1 W=1 ARCH=um
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All error/warnings (new ones prefixed by >>):
arch/x86/include/asm/atomic64_32.h:143: note: this is the location of the previous definition
143 | #define arch_atomic64_add_return arch_atomic64_add_return
|
In file included from include/linux/atomic.h:84,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
include/linux/atomic-fallback.h:1447: warning: "arch_atomic64_fetch_add" redefined
1447 | #define arch_atomic64_fetch_add atomic64_fetch_add
|
In file included from arch/x86/include/asm/atomic.h:267,
from include/linux/atomic.h:7,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
arch/x86/include/asm/atomic64_32.h:338: note: this is the location of the previous definition
338 | #define arch_atomic64_fetch_add arch_atomic64_fetch_add
|
In file included from include/linux/atomic.h:84,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
include/linux/atomic-fallback.h:1496: warning: "arch_atomic64_sub_return" redefined
1496 | #define arch_atomic64_sub_return atomic64_sub_return
|
In file included from arch/x86/include/asm/atomic.h:267,
from include/linux/atomic.h:7,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
arch/x86/include/asm/atomic64_32.h:155: note: this is the location of the previous definition
155 | #define arch_atomic64_sub_return arch_atomic64_sub_return
|
In file included from include/linux/atomic.h:84,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
include/linux/atomic-fallback.h:1543: warning: "arch_atomic64_fetch_sub" redefined
1543 | #define arch_atomic64_fetch_sub atomic64_fetch_sub
|
In file included from arch/x86/include/asm/atomic.h:267,
from include/linux/atomic.h:7,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
arch/x86/include/asm/atomic64_32.h:340: note: this is the location of the previous definition
340 | #define arch_atomic64_fetch_sub(i, v) arch_atomic64_fetch_add(-(i), (v))
|
In file included from include/linux/atomic.h:84,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
include/linux/atomic-fallback.h:1590: warning: "arch_atomic64_inc" redefined
1590 | #define arch_atomic64_inc atomic64_inc
|
In file included from arch/x86/include/asm/atomic.h:267,
from include/linux/atomic.h:7,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
arch/x86/include/asm/atomic64_32.h:216: note: this is the location of the previous definition
216 | #define arch_atomic64_inc arch_atomic64_inc
|
In file included from include/linux/atomic.h:84,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
include/linux/atomic-fallback.h: In function 'atomic64_inc':
include/linux/atomic-fallback.h:1596:2: error: implicit declaration of function 'atomic64_add'; did you mean 'atomic64_inc'? [-Werror=implicit-function-declaration]
1596 | atomic64_add(1, v);
| ^~~~~~~~~~~~
| atomic64_inc
include/linux/atomic-fallback.h: At top level:
>> include/linux/atomic-fallback.h:1601: warning: "arch_atomic64_inc_return" redefined
1601 | #define arch_atomic64_inc_return atomic64_inc_return
|
In file included from arch/x86/include/asm/atomic.h:267,
from include/linux/atomic.h:7,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
arch/x86/include/asm/atomic64_32.h:164: note: this is the location of the previous definition
164 | #define arch_atomic64_inc_return arch_atomic64_inc_return
|
In file included from include/linux/atomic.h:84,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
include/linux/atomic-fallback.h: In function 'atomic64_inc_return':
include/linux/atomic-fallback.h:1617:9: error: implicit declaration of function 'atomic64_add_return'; did you mean 'atomic64_inc_return'? [-Werror=implicit-function-declaration]
1617 | return atomic64_add_return(1, v);
| ^~~~~~~~~~~~~~~~~~~
| atomic64_inc_return
include/linux/atomic-fallback.h: In function 'atomic64_fetch_inc':
include/linux/atomic-fallback.h:1703:9: error: implicit declaration of function 'atomic64_fetch_add'; did you mean 'atomic64_fetch_inc'? [-Werror=implicit-function-declaration]
1703 | return atomic64_fetch_add(1, v);
| ^~~~~~~~~~~~~~~~~~
| atomic64_fetch_inc
include/linux/atomic-fallback.h: At top level:
include/linux/atomic-fallback.h:1773: warning: "arch_atomic64_dec" redefined
1773 | #define arch_atomic64_dec atomic64_dec
|
In file included from arch/x86/include/asm/atomic.h:267,
from include/linux/atomic.h:7,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
arch/x86/include/asm/atomic64_32.h:229: note: this is the location of the previous definition
229 | #define arch_atomic64_dec arch_atomic64_dec
|
In file included from include/linux/atomic.h:84,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
include/linux/atomic-fallback.h: In function 'atomic64_dec':
include/linux/atomic-fallback.h:1779:2: error: implicit declaration of function 'atomic64_sub'; did you mean 'atomic64_dec'? [-Werror=implicit-function-declaration]
1779 | atomic64_sub(1, v);
| ^~~~~~~~~~~~
| atomic64_dec
include/linux/atomic-fallback.h: At top level:
>> include/linux/atomic-fallback.h:1784: warning: "arch_atomic64_dec_return" redefined
1784 | #define arch_atomic64_dec_return atomic64_dec_return
|
In file included from arch/x86/include/asm/atomic.h:267,
from include/linux/atomic.h:7,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
arch/x86/include/asm/atomic64_32.h:173: note: this is the location of the previous definition
173 | #define arch_atomic64_dec_return arch_atomic64_dec_return
|
In file included from include/linux/atomic.h:84,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
include/linux/atomic-fallback.h: In function 'atomic64_dec_return':
include/linux/atomic-fallback.h:1800:9: error: implicit declaration of function 'atomic64_sub_return'; did you mean 'atomic64_dec_return'? [-Werror=implicit-function-declaration]
1800 | return atomic64_sub_return(1, v);
| ^~~~~~~~~~~~~~~~~~~
| atomic64_dec_return
include/linux/atomic-fallback.h: In function 'atomic64_fetch_dec':
include/linux/atomic-fallback.h:1886:9: error: implicit declaration of function 'atomic64_fetch_sub'; did you mean 'atomic64_fetch_dec'? [-Werror=implicit-function-declaration]
1886 | return atomic64_fetch_sub(1, v);
| ^~~~~~~~~~~~~~~~~~
| atomic64_fetch_dec
include/linux/atomic-fallback.h: At top level:
include/linux/atomic-fallback.h:1958: warning: "arch_atomic64_fetch_and" redefined
1958 | #define arch_atomic64_fetch_and atomic64_fetch_and
|
In file included from arch/x86/include/asm/atomic.h:267,
from include/linux/atomic.h:7,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
arch/x86/include/asm/atomic64_32.h:289: note: this is the location of the previous definition
289 | #define arch_atomic64_fetch_and arch_atomic64_fetch_and
|
In file included from include/linux/atomic.h:84,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
include/linux/atomic-fallback.h: In function 'atomic64_andnot':
include/linux/atomic-fallback.h:2011:2: error: implicit declaration of function 'atomic64_and'; did you mean 'atomic64_inc'? [-Werror=implicit-function-declaration]
2011 | atomic64_and(~i, v);
| ^~~~~~~~~~~~
| atomic64_inc
include/linux/atomic-fallback.h: In function 'atomic64_fetch_andnot':
include/linux/atomic-fallback.h:2032:9: error: implicit declaration of function 'atomic64_fetch_and'; did you mean 'atomic64_fetch_inc'? [-Werror=implicit-function-declaration]
2032 | return atomic64_fetch_and(~i, v);
| ^~~~~~~~~~~~~~~~~~
| atomic64_fetch_inc
include/linux/atomic-fallback.h: At top level:
include/linux/atomic-fallback.h:2104: warning: "arch_atomic64_fetch_or" redefined
2104 | #define arch_atomic64_fetch_or atomic64_fetch_or
|
In file included from arch/x86/include/asm/atomic.h:267,
from include/linux/atomic.h:7,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
arch/x86/include/asm/atomic64_32.h:308: note: this is the location of the previous definition
308 | #define arch_atomic64_fetch_or arch_atomic64_fetch_or
|
In file included from include/linux/atomic.h:84,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
include/linux/atomic-fallback.h:2153: warning: "arch_atomic64_fetch_xor" redefined
2153 | #define arch_atomic64_fetch_xor atomic64_fetch_xor
|
In file included from arch/x86/include/asm/atomic.h:267,
from include/linux/atomic.h:7,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
arch/x86/include/asm/atomic64_32.h:327: note: this is the location of the previous definition
327 | #define arch_atomic64_fetch_xor arch_atomic64_fetch_xor
|
In file included from include/linux/atomic.h:84,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
include/linux/atomic-fallback.h:2200: warning: "arch_atomic64_xchg" redefined
2200 | #define arch_atomic64_xchg atomic64_xchg
|
In file included from arch/x86/include/asm/atomic.h:267,
from include/linux/atomic.h:7,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
arch/x86/include/asm/atomic64_32.h:98: note: this is the location of the previous definition
98 | #define arch_atomic64_xchg arch_atomic64_xchg
|
In file included from include/linux/atomic.h:84,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
include/linux/atomic-fallback.h:2247: warning: "arch_atomic64_cmpxchg" redefined
2247 | #define arch_atomic64_cmpxchg atomic64_cmpxchg
|
In file included from arch/x86/include/asm/atomic.h:267,
from include/linux/atomic.h:7,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
arch/x86/include/asm/atomic64_32.h:78: note: this is the location of the previous definition
78 | #define arch_atomic64_cmpxchg arch_atomic64_cmpxchg
|
In file included from include/linux/atomic.h:84,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
include/linux/atomic-fallback.h: In function 'atomic64_try_cmpxchg':
include/linux/atomic-fallback.h:2311:6: error: implicit declaration of function 'atomic64_cmpxchg'; did you mean 'atomic64_try_cmpxchg'? [-Werror=implicit-function-declaration]
2311 | r = atomic64_cmpxchg(v, o, new);
| ^~~~~~~~~~~~~~~~
| atomic64_try_cmpxchg
include/linux/atomic-fallback.h: In function 'atomic64_fetch_add_unless':
include/linux/atomic-fallback.h:2489:10: error: implicit declaration of function 'atomic64_read'; did you mean 'atomic64_dec'? [-Werror=implicit-function-declaration]
2489 | s64 c = atomic64_read(v);
| ^~~~~~~~~~~~~
| atomic64_dec
include/linux/atomic-fallback.h: At top level:
>> include/linux/atomic-fallback.h:2501: warning: "arch_atomic64_add_unless" redefined
2501 | #define arch_atomic64_add_unless atomic64_add_unless
|
In file included from arch/x86/include/asm/atomic.h:267,
from include/linux/atomic.h:7,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
arch/x86/include/asm/atomic64_32.h:249: note: this is the location of the previous definition
249 | #define arch_atomic64_add_unless arch_atomic64_add_unless
|
In file included from include/linux/atomic.h:84,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
>> include/linux/atomic-fallback.h:2521: warning: "arch_atomic64_inc_not_zero" redefined
2521 | #define arch_atomic64_inc_not_zero atomic64_inc_not_zero
|
In file included from arch/x86/include/asm/atomic.h:267,
from include/linux/atomic.h:7,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
arch/x86/include/asm/atomic64_32.h:258: note: this is the location of the previous definition
258 | #define arch_atomic64_inc_not_zero arch_atomic64_inc_not_zero
|
In file included from include/linux/atomic.h:84,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
>> include/linux/atomic-fallback.h:2575: warning: "arch_atomic64_dec_if_positive" redefined
2575 | #define arch_atomic64_dec_if_positive atomic64_dec_if_positive
|
In file included from arch/x86/include/asm/atomic.h:267,
from include/linux/atomic.h:7,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
arch/x86/include/asm/atomic64_32.h:267: note: this is the location of the previous definition
267 | #define arch_atomic64_dec_if_positive arch_atomic64_dec_if_positive
|
In file included from include/linux/atomic.h:87,
from include/linux/rcupdate.h:25,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
include/asm-generic/atomic-long.h: In function 'atomic_long_set':
>> include/asm-generic/atomic-long.h:535:2: error: implicit declaration of function 'atomic_set'; did you mean 'atomic_dec'? [-Werror=implicit-function-declaration]
535 | atomic_set(v, i);
| ^~~~~~~~~~
| atomic_dec
include/asm-generic/atomic-long.h: In function 'atomic_long_or':
>> include/asm-generic/atomic-long.h:823:2: error: implicit declaration of function 'atomic_or'; did you mean 'atomic_dec'? [-Werror=implicit-function-declaration]
823 | atomic_or(i, v);
| ^~~~~~~~~
| atomic_dec
include/asm-generic/atomic-long.h: In function 'atomic_long_fetch_or':
include/asm-generic/atomic-long.h:829:9: error: implicit declaration of function 'atomic_fetch_or'; did you mean 'atomic_fetch_dec'? [-Werror=implicit-function-declaration]
829 | return atomic_fetch_or(i, v);
| ^~~~~~~~~~~~~~~
| atomic_fetch_dec
include/asm-generic/atomic-long.h: In function 'atomic_long_xor':
>> include/asm-generic/atomic-long.h:853:2: error: implicit declaration of function 'atomic_xor'; did you mean 'atomic_dec'? [-Werror=implicit-function-declaration]
853 | atomic_xor(i, v);
| ^~~~~~~~~~
| atomic_dec
include/asm-generic/atomic-long.h: In function 'atomic_long_fetch_xor':
include/asm-generic/atomic-long.h:859:9: error: implicit declaration of function 'atomic_fetch_xor'; did you mean 'atomic_fetch_dec'? [-Werror=implicit-function-declaration]
859 | return atomic_fetch_xor(i, v);
| ^~~~~~~~~~~~~~~~
| atomic_fetch_dec
include/asm-generic/atomic-long.h: In function 'atomic_long_xchg':
include/asm-generic/atomic-long.h:883:9: error: implicit declaration of function 'atomic_xchg' [-Werror=implicit-function-declaration]
883 | return atomic_xchg(v, i);
| ^~~~~~~~~~~
In file included from include/linux/smp_types.h:5,
from include/linux/smp.h:15,
from include/linux/lockdep.h:14,
from include/linux/rcupdate.h:29,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
include/linux/llist.h: In function 'llist_del_all':
>> include/linux/llist.h:237:9: error: implicit declaration of function 'xchg' [-Werror=implicit-function-declaration]
237 | return xchg(&head->first, NULL);
| ^~~~
>> include/linux/llist.h:237:9: warning: returning 'int' from a function with return type 'struct llist_node *' makes pointer from integer without a cast [-Wint-conversion]
237 | return xchg(&head->first, NULL);
| ^~~~~~~~~~~~~~~~~~~~~~~~
In file included from arch/um/kernel/asm-offsets.c:1:
arch/x86/um/shared/sysdep/kernel-offsets.h: At top level:
arch/x86/um/shared/sysdep/kernel-offsets.h:9:6: warning: no previous prototype for 'foo' [-Wmissing-prototypes]
9 | void foo(void)
| ^~~
cc1: some warnings being treated as errors
make[2]: *** [scripts/Makefile.build:116: arch/um/kernel/asm-offsets.s] Error 1
make[2]: Target '__build' not remade because of errors.
make[1]: *** [Makefile:1235: prepare0] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [Makefile:215: __sub-make] Error 2
make: Target 'prepare' not remade because of errors.
vim +/arch_atomic64_dec_if_positive +2575 include/linux/atomic-fallback.h
9fa45070a2e59a Mark Rutland 2018-09-04 2500
5faafd5685764e Peter Zijlstra 2020-06-25 @2501 #define arch_atomic64_add_unless atomic64_add_unless
5faafd5685764e Peter Zijlstra 2020-06-25 2502
9fa45070a2e59a Mark Rutland 2018-09-04 2503 #ifndef atomic64_add_unless
9fa45070a2e59a Mark Rutland 2018-09-04 2504 /**
9fa45070a2e59a Mark Rutland 2018-09-04 2505 * atomic64_add_unless - add unless the number is already a given value
9fa45070a2e59a Mark Rutland 2018-09-04 2506 * @v: pointer of type atomic64_t
9fa45070a2e59a Mark Rutland 2018-09-04 2507 * @a: the amount to add to v...
9fa45070a2e59a Mark Rutland 2018-09-04 2508 * @u: ...unless v is equal to u.
9fa45070a2e59a Mark Rutland 2018-09-04 2509 *
9fa45070a2e59a Mark Rutland 2018-09-04 2510 * Atomically adds @a to @v, if @v was not already @u.
9fa45070a2e59a Mark Rutland 2018-09-04 2511 * Returns true if the addition was done.
9fa45070a2e59a Mark Rutland 2018-09-04 2512 */
765dcd209947e7 Marco Elver 2019-11-26 2513 static __always_inline bool
9fa45070a2e59a Mark Rutland 2018-09-04 2514 atomic64_add_unless(atomic64_t *v, s64 a, s64 u)
9fa45070a2e59a Mark Rutland 2018-09-04 2515 {
9fa45070a2e59a Mark Rutland 2018-09-04 2516 return atomic64_fetch_add_unless(v, a, u) != u;
9fa45070a2e59a Mark Rutland 2018-09-04 2517 }
9fa45070a2e59a Mark Rutland 2018-09-04 2518 #define atomic64_add_unless atomic64_add_unless
9fa45070a2e59a Mark Rutland 2018-09-04 2519 #endif
9fa45070a2e59a Mark Rutland 2018-09-04 2520
5faafd5685764e Peter Zijlstra 2020-06-25 @2521 #define arch_atomic64_inc_not_zero atomic64_inc_not_zero
5faafd5685764e Peter Zijlstra 2020-06-25 2522
9fa45070a2e59a Mark Rutland 2018-09-04 2523 #ifndef atomic64_inc_not_zero
9fa45070a2e59a Mark Rutland 2018-09-04 2524 /**
9fa45070a2e59a Mark Rutland 2018-09-04 2525 * atomic64_inc_not_zero - increment unless the number is zero
9fa45070a2e59a Mark Rutland 2018-09-04 2526 * @v: pointer of type atomic64_t
9fa45070a2e59a Mark Rutland 2018-09-04 2527 *
9fa45070a2e59a Mark Rutland 2018-09-04 2528 * Atomically increments @v by 1, if @v is non-zero.
9fa45070a2e59a Mark Rutland 2018-09-04 2529 * Returns true if the increment was done.
9fa45070a2e59a Mark Rutland 2018-09-04 2530 */
765dcd209947e7 Marco Elver 2019-11-26 2531 static __always_inline bool
9fa45070a2e59a Mark Rutland 2018-09-04 2532 atomic64_inc_not_zero(atomic64_t *v)
9fa45070a2e59a Mark Rutland 2018-09-04 2533 {
9fa45070a2e59a Mark Rutland 2018-09-04 2534 return atomic64_add_unless(v, 1, 0);
9fa45070a2e59a Mark Rutland 2018-09-04 2535 }
9fa45070a2e59a Mark Rutland 2018-09-04 2536 #define atomic64_inc_not_zero atomic64_inc_not_zero
9fa45070a2e59a Mark Rutland 2018-09-04 2537 #endif
9fa45070a2e59a Mark Rutland 2018-09-04 2538
5faafd5685764e Peter Zijlstra 2020-06-25 2539 #define arch_atomic64_inc_unless_negative atomic64_inc_unless_negative
5faafd5685764e Peter Zijlstra 2020-06-25 2540
9fa45070a2e59a Mark Rutland 2018-09-04 2541 #ifndef atomic64_inc_unless_negative
765dcd209947e7 Marco Elver 2019-11-26 2542 static __always_inline bool
9fa45070a2e59a Mark Rutland 2018-09-04 2543 atomic64_inc_unless_negative(atomic64_t *v)
9fa45070a2e59a Mark Rutland 2018-09-04 2544 {
9fa45070a2e59a Mark Rutland 2018-09-04 2545 s64 c = atomic64_read(v);
9fa45070a2e59a Mark Rutland 2018-09-04 2546
9fa45070a2e59a Mark Rutland 2018-09-04 2547 do {
9fa45070a2e59a Mark Rutland 2018-09-04 2548 if (unlikely(c < 0))
9fa45070a2e59a Mark Rutland 2018-09-04 2549 return false;
9fa45070a2e59a Mark Rutland 2018-09-04 2550 } while (!atomic64_try_cmpxchg(v, &c, c + 1));
9fa45070a2e59a Mark Rutland 2018-09-04 2551
9fa45070a2e59a Mark Rutland 2018-09-04 2552 return true;
9fa45070a2e59a Mark Rutland 2018-09-04 2553 }
9fa45070a2e59a Mark Rutland 2018-09-04 2554 #define atomic64_inc_unless_negative atomic64_inc_unless_negative
9fa45070a2e59a Mark Rutland 2018-09-04 2555 #endif
9fa45070a2e59a Mark Rutland 2018-09-04 2556
5faafd5685764e Peter Zijlstra 2020-06-25 2557 #define arch_atomic64_dec_unless_positive atomic64_dec_unless_positive
5faafd5685764e Peter Zijlstra 2020-06-25 2558
9fa45070a2e59a Mark Rutland 2018-09-04 2559 #ifndef atomic64_dec_unless_positive
765dcd209947e7 Marco Elver 2019-11-26 2560 static __always_inline bool
9fa45070a2e59a Mark Rutland 2018-09-04 2561 atomic64_dec_unless_positive(atomic64_t *v)
9fa45070a2e59a Mark Rutland 2018-09-04 2562 {
9fa45070a2e59a Mark Rutland 2018-09-04 2563 s64 c = atomic64_read(v);
9fa45070a2e59a Mark Rutland 2018-09-04 2564
9fa45070a2e59a Mark Rutland 2018-09-04 2565 do {
9fa45070a2e59a Mark Rutland 2018-09-04 2566 if (unlikely(c > 0))
9fa45070a2e59a Mark Rutland 2018-09-04 2567 return false;
9fa45070a2e59a Mark Rutland 2018-09-04 2568 } while (!atomic64_try_cmpxchg(v, &c, c - 1));
9fa45070a2e59a Mark Rutland 2018-09-04 2569
9fa45070a2e59a Mark Rutland 2018-09-04 2570 return true;
9fa45070a2e59a Mark Rutland 2018-09-04 2571 }
9fa45070a2e59a Mark Rutland 2018-09-04 2572 #define atomic64_dec_unless_positive atomic64_dec_unless_positive
9fa45070a2e59a Mark Rutland 2018-09-04 2573 #endif
9fa45070a2e59a Mark Rutland 2018-09-04 2574
5faafd5685764e Peter Zijlstra 2020-06-25 @2575 #define arch_atomic64_dec_if_positive atomic64_dec_if_positive
5faafd5685764e Peter Zijlstra 2020-06-25 2576
:::::: The code at line 2575 was first introduced by commit
:::::: 5faafd5685764e4d75376aceac91fdf75b3b16f8 locking/atomics: Provide the arch_atomic_ interface to generic code
:::::: TO: Peter Zijlstra <peterz@infradead.org>
:::::: CC: Paul E. McKenney <paulmck@kernel.org>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
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