lib/atomic64_test.c:217:9: error: implicit declaration of function 'atomic64_dec_if_positive'

From: kbuild test robot
Date: Sun Oct 09 2016 - 10:40:53 EST


tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: b66484cd74706fa8681d051840fe4b18a3da40ff
commit: 51a021244b9d579be6b4f8c15c493a76deb2a79e atomic64: no need for CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
date: 2 days ago
config: frv-allmodconfig (attached as .config)
compiler: frv-linux-gcc (GCC) 6.2.0
reproduce:
wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout 51a021244b9d579be6b4f8c15c493a76deb2a79e
# save the attached .config to linux build tree
make.cross ARCH=frv

All errors (new ones prefixed by >>):

In file included from include/linux/init.h:4:0,
from lib/atomic64_test.c:14:
lib/atomic64_test.c: In function 'test_atomic64':
lib/atomic64_test.c:208:9: error: implicit declaration of function 'atomic64_add_unless' [-Werror=implicit-function-declaration]
BUG_ON(atomic64_add_unless(&v, one, v0));
^
include/linux/compiler.h:168:42: note: in definition of macro 'unlikely'
# define unlikely(x) __builtin_expect(!!(x), 0)
^
lib/atomic64_test.c:208:2: note: in expansion of macro 'BUG_ON'
BUG_ON(atomic64_add_unless(&v, one, v0));
^~~~~~
>> lib/atomic64_test.c:217:9: error: implicit declaration of function 'atomic64_dec_if_positive' [-Werror=implicit-function-declaration]
BUG_ON(atomic64_dec_if_positive(&v) != (onestwos - 1));
^
include/linux/compiler.h:168:42: note: in definition of macro 'unlikely'
# define unlikely(x) __builtin_expect(!!(x), 0)
^
lib/atomic64_test.c:217:2: note: in expansion of macro 'BUG_ON'
BUG_ON(atomic64_dec_if_positive(&v) != (onestwos - 1));
^~~~~~
lib/atomic64_test.c:230:10: error: implicit declaration of function 'atomic64_inc_not_zero' [-Werror=implicit-function-declaration]
BUG_ON(!atomic64_inc_not_zero(&v));
^
include/linux/compiler.h:168:42: note: in definition of macro 'unlikely'
# define unlikely(x) __builtin_expect(!!(x), 0)
^
lib/atomic64_test.c:230:2: note: in expansion of macro 'BUG_ON'
BUG_ON(!atomic64_inc_not_zero(&v));
^~~~~~
cc1: some warnings being treated as errors

vim +/atomic64_dec_if_positive +217 lib/atomic64_test.c

978e5a36 Boqun Feng 2015-11-04 202 DEC_RETURN_FAMILY_TEST(64, v0);
86a89380 Luca Barbieri 2010-02-24 203
978e5a36 Boqun Feng 2015-11-04 204 XCHG_FAMILY_TEST(64, v0, v1);
978e5a36 Boqun Feng 2015-11-04 205 CMPXCHG_FAMILY_TEST(64, v0, v1, v2);
86a89380 Luca Barbieri 2010-02-24 206
86a89380 Luca Barbieri 2010-02-24 207 INIT(v0);
9efbcd59 Luca Barbieri 2010-03-01 @208 BUG_ON(atomic64_add_unless(&v, one, v0));
86a89380 Luca Barbieri 2010-02-24 209 BUG_ON(v.counter != r);
86a89380 Luca Barbieri 2010-02-24 210
86a89380 Luca Barbieri 2010-02-24 211 INIT(v0);
9efbcd59 Luca Barbieri 2010-03-01 212 BUG_ON(!atomic64_add_unless(&v, one, v1));
86a89380 Luca Barbieri 2010-02-24 213 r += one;
86a89380 Luca Barbieri 2010-02-24 214 BUG_ON(v.counter != r);
86a89380 Luca Barbieri 2010-02-24 215
86a89380 Luca Barbieri 2010-02-24 216 INIT(onestwos);
86a89380 Luca Barbieri 2010-02-24 @217 BUG_ON(atomic64_dec_if_positive(&v) != (onestwos - 1));
86a89380 Luca Barbieri 2010-02-24 218 r -= one;
86a89380 Luca Barbieri 2010-02-24 219 BUG_ON(v.counter != r);
86a89380 Luca Barbieri 2010-02-24 220

:::::: The code at line 217 was first introduced by commit
:::::: 86a8938078a8bb518c5376de493e348c7490d506 lib: Add self-test for atomic64_t

:::::: TO: Luca Barbieri <luca@xxxxxxxxxxxxxxxxx>
:::::: CC: H. Peter Anvin <hpa@xxxxxxxxx>

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