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Date: Mon, 19 Sep 2016 00:39:17 +0800
From: kbuild test robot <fengguang.wu@...el.com>
To: Joe Perches <joe@...ches.com>
Cc: kbuild-all@...org, linux-kernel@...r.kernel.org,
Andrew Morton <akpm@...ux-foundation.org>,
Linux Memory Management List <linux-mm@...ck.org>
Subject: lib/atomic64_test.c:112:9: error: implicit declaration of function
'atomic64_add_unless'
Hi Joe,
First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: d4690f1e1cdabb4d61207b6787b1605a0dc0aeab
commit: cb984d101b30eb7478d32df56a0023e4603cba7f compiler-gcc: integrate the various compiler-gcc[345].h files
date: 1 year, 3 months 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 cb984d101b30eb7478d32df56a0023e4603cba7f
# 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:112:9: error: implicit declaration of function 'atomic64_add_unless' [-Werror=implicit-function-declaration]
BUG_ON(atomic64_add_unless(&v, one, v0));
^
include/linux/compiler.h:164:42: note: in definition of macro 'unlikely'
# define unlikely(x) __builtin_expect(!!(x), 0)
^
lib/atomic64_test.c:112:2: note: in expansion of macro 'BUG_ON'
BUG_ON(atomic64_add_unless(&v, one, v0));
^~~~~~
lib/atomic64_test.c:134:2: warning: #warning Please implement atomic64_dec_if_positive for your architecture and select the above Kconfig symbol [-Wcpp]
#warning Please implement atomic64_dec_if_positive for your architecture and select the above Kconfig symbol
^~~~~~~
In file included from include/linux/init.h:4:0,
from lib/atomic64_test.c:14:
>> lib/atomic64_test.c:138:10: error: implicit declaration of function 'atomic64_inc_not_zero' [-Werror=implicit-function-declaration]
BUG_ON(!atomic64_inc_not_zero(&v));
^
include/linux/compiler.h:164:42: note: in definition of macro 'unlikely'
# define unlikely(x) __builtin_expect(!!(x), 0)
^
lib/atomic64_test.c:138:2: note: in expansion of macro 'BUG_ON'
BUG_ON(!atomic64_inc_not_zero(&v));
^~~~~~
cc1: some warnings being treated as errors
vim +/atomic64_add_unless +112 lib/atomic64_test.c
86a893807 Luca Barbieri 2010-02-24 8 * the Free Software Foundation; either version 2 of the License, or
86a893807 Luca Barbieri 2010-02-24 9 * (at your option) any later version.
86a893807 Luca Barbieri 2010-02-24 10 */
b3b16d284 Fabian Frederick 2014-06-04 11
b3b16d284 Fabian Frederick 2014-06-04 12 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
b3b16d284 Fabian Frederick 2014-06-04 13
86a893807 Luca Barbieri 2010-02-24 @14 #include <linux/init.h>
50af5ead3 Paul Gortmaker 2012-01-20 15 #include <linux/bug.h>
0dbdd1bfe Peter Huewe 2010-05-24 16 #include <linux/kernel.h>
60063497a Arun Sharma 2011-07-26 17 #include <linux/atomic.h>
86a893807 Luca Barbieri 2010-02-24 18
86a893807 Luca Barbieri 2010-02-24 19 #define INIT(c) do { atomic64_set(&v, c); r = c; } while (0)
86a893807 Luca Barbieri 2010-02-24 20 static __init int test_atomic64(void)
86a893807 Luca Barbieri 2010-02-24 21 {
86a893807 Luca Barbieri 2010-02-24 22 long long v0 = 0xaaa31337c001d00dLL;
86a893807 Luca Barbieri 2010-02-24 23 long long v1 = 0xdeadbeefdeafcafeLL;
86a893807 Luca Barbieri 2010-02-24 24 long long v2 = 0xfaceabadf00df001LL;
86a893807 Luca Barbieri 2010-02-24 25 long long onestwos = 0x1111111122222222LL;
86a893807 Luca Barbieri 2010-02-24 26 long long one = 1LL;
86a893807 Luca Barbieri 2010-02-24 27
86a893807 Luca Barbieri 2010-02-24 28 atomic64_t v = ATOMIC64_INIT(v0);
86a893807 Luca Barbieri 2010-02-24 29 long long r = v0;
86a893807 Luca Barbieri 2010-02-24 30 BUG_ON(v.counter != r);
86a893807 Luca Barbieri 2010-02-24 31
86a893807 Luca Barbieri 2010-02-24 32 atomic64_set(&v, v1);
86a893807 Luca Barbieri 2010-02-24 33 r = v1;
86a893807 Luca Barbieri 2010-02-24 34 BUG_ON(v.counter != r);
86a893807 Luca Barbieri 2010-02-24 35 BUG_ON(atomic64_read(&v) != r);
86a893807 Luca Barbieri 2010-02-24 36
86a893807 Luca Barbieri 2010-02-24 37 INIT(v0);
86a893807 Luca Barbieri 2010-02-24 38 atomic64_add(onestwos, &v);
86a893807 Luca Barbieri 2010-02-24 39 r += onestwos;
86a893807 Luca Barbieri 2010-02-24 40 BUG_ON(v.counter != r);
86a893807 Luca Barbieri 2010-02-24 41
86a893807 Luca Barbieri 2010-02-24 42 INIT(v0);
86a893807 Luca Barbieri 2010-02-24 43 atomic64_add(-one, &v);
86a893807 Luca Barbieri 2010-02-24 44 r += -one;
86a893807 Luca Barbieri 2010-02-24 45 BUG_ON(v.counter != r);
86a893807 Luca Barbieri 2010-02-24 46
86a893807 Luca Barbieri 2010-02-24 47 INIT(v0);
86a893807 Luca Barbieri 2010-02-24 48 r += onestwos;
86a893807 Luca Barbieri 2010-02-24 49 BUG_ON(atomic64_add_return(onestwos, &v) != r);
86a893807 Luca Barbieri 2010-02-24 50 BUG_ON(v.counter != r);
86a893807 Luca Barbieri 2010-02-24 51
86a893807 Luca Barbieri 2010-02-24 52 INIT(v0);
86a893807 Luca Barbieri 2010-02-24 53 r += -one;
86a893807 Luca Barbieri 2010-02-24 54 BUG_ON(atomic64_add_return(-one, &v) != r);
86a893807 Luca Barbieri 2010-02-24 55 BUG_ON(v.counter != r);
86a893807 Luca Barbieri 2010-02-24 56
86a893807 Luca Barbieri 2010-02-24 57 INIT(v0);
86a893807 Luca Barbieri 2010-02-24 58 atomic64_sub(onestwos, &v);
86a893807 Luca Barbieri 2010-02-24 59 r -= onestwos;
86a893807 Luca Barbieri 2010-02-24 60 BUG_ON(v.counter != r);
86a893807 Luca Barbieri 2010-02-24 61
86a893807 Luca Barbieri 2010-02-24 62 INIT(v0);
86a893807 Luca Barbieri 2010-02-24 63 atomic64_sub(-one, &v);
86a893807 Luca Barbieri 2010-02-24 64 r -= -one;
86a893807 Luca Barbieri 2010-02-24 65 BUG_ON(v.counter != r);
86a893807 Luca Barbieri 2010-02-24 66
86a893807 Luca Barbieri 2010-02-24 67 INIT(v0);
86a893807 Luca Barbieri 2010-02-24 68 r -= onestwos;
86a893807 Luca Barbieri 2010-02-24 69 BUG_ON(atomic64_sub_return(onestwos, &v) != r);
86a893807 Luca Barbieri 2010-02-24 70 BUG_ON(v.counter != r);
86a893807 Luca Barbieri 2010-02-24 71
86a893807 Luca Barbieri 2010-02-24 72 INIT(v0);
86a893807 Luca Barbieri 2010-02-24 73 r -= -one;
86a893807 Luca Barbieri 2010-02-24 74 BUG_ON(atomic64_sub_return(-one, &v) != r);
86a893807 Luca Barbieri 2010-02-24 75 BUG_ON(v.counter != r);
86a893807 Luca Barbieri 2010-02-24 76
86a893807 Luca Barbieri 2010-02-24 77 INIT(v0);
86a893807 Luca Barbieri 2010-02-24 78 atomic64_inc(&v);
86a893807 Luca Barbieri 2010-02-24 79 r += one;
86a893807 Luca Barbieri 2010-02-24 80 BUG_ON(v.counter != r);
86a893807 Luca Barbieri 2010-02-24 81
86a893807 Luca Barbieri 2010-02-24 82 INIT(v0);
86a893807 Luca Barbieri 2010-02-24 83 r += one;
86a893807 Luca Barbieri 2010-02-24 84 BUG_ON(atomic64_inc_return(&v) != r);
86a893807 Luca Barbieri 2010-02-24 85 BUG_ON(v.counter != r);
86a893807 Luca Barbieri 2010-02-24 86
86a893807 Luca Barbieri 2010-02-24 87 INIT(v0);
86a893807 Luca Barbieri 2010-02-24 88 atomic64_dec(&v);
86a893807 Luca Barbieri 2010-02-24 89 r -= one;
86a893807 Luca Barbieri 2010-02-24 90 BUG_ON(v.counter != r);
86a893807 Luca Barbieri 2010-02-24 91
86a893807 Luca Barbieri 2010-02-24 92 INIT(v0);
86a893807 Luca Barbieri 2010-02-24 93 r -= one;
86a893807 Luca Barbieri 2010-02-24 94 BUG_ON(atomic64_dec_return(&v) != r);
86a893807 Luca Barbieri 2010-02-24 95 BUG_ON(v.counter != r);
86a893807 Luca Barbieri 2010-02-24 96
86a893807 Luca Barbieri 2010-02-24 97 INIT(v0);
86a893807 Luca Barbieri 2010-02-24 98 BUG_ON(atomic64_xchg(&v, v1) != v0);
86a893807 Luca Barbieri 2010-02-24 99 r = v1;
86a893807 Luca Barbieri 2010-02-24 100 BUG_ON(v.counter != r);
86a893807 Luca Barbieri 2010-02-24 101
86a893807 Luca Barbieri 2010-02-24 102 INIT(v0);
86a893807 Luca Barbieri 2010-02-24 103 BUG_ON(atomic64_cmpxchg(&v, v0, v1) != v0);
86a893807 Luca Barbieri 2010-02-24 104 r = v1;
86a893807 Luca Barbieri 2010-02-24 105 BUG_ON(v.counter != r);
86a893807 Luca Barbieri 2010-02-24 106
86a893807 Luca Barbieri 2010-02-24 107 INIT(v0);
86a893807 Luca Barbieri 2010-02-24 108 BUG_ON(atomic64_cmpxchg(&v, v2, v1) != v0);
86a893807 Luca Barbieri 2010-02-24 109 BUG_ON(v.counter != r);
86a893807 Luca Barbieri 2010-02-24 110
86a893807 Luca Barbieri 2010-02-24 111 INIT(v0);
9efbcd590 Luca Barbieri 2010-03-01 @112 BUG_ON(atomic64_add_unless(&v, one, v0));
86a893807 Luca Barbieri 2010-02-24 113 BUG_ON(v.counter != r);
86a893807 Luca Barbieri 2010-02-24 114
86a893807 Luca Barbieri 2010-02-24 115 INIT(v0);
9efbcd590 Luca Barbieri 2010-03-01 116 BUG_ON(!atomic64_add_unless(&v, one, v1));
86a893807 Luca Barbieri 2010-02-24 117 r += one;
86a893807 Luca Barbieri 2010-02-24 118 BUG_ON(v.counter != r);
86a893807 Luca Barbieri 2010-02-24 119
7463449b8 Catalin Marinas 2012-07-30 120 #ifdef CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
86a893807 Luca Barbieri 2010-02-24 121 INIT(onestwos);
86a893807 Luca Barbieri 2010-02-24 122 BUG_ON(atomic64_dec_if_positive(&v) != (onestwos - 1));
86a893807 Luca Barbieri 2010-02-24 123 r -= one;
86a893807 Luca Barbieri 2010-02-24 124 BUG_ON(v.counter != r);
86a893807 Luca Barbieri 2010-02-24 125
86a893807 Luca Barbieri 2010-02-24 126 INIT(0);
86a893807 Luca Barbieri 2010-02-24 127 BUG_ON(atomic64_dec_if_positive(&v) != -one);
86a893807 Luca Barbieri 2010-02-24 128 BUG_ON(v.counter != r);
86a893807 Luca Barbieri 2010-02-24 129
86a893807 Luca Barbieri 2010-02-24 130 INIT(-one);
86a893807 Luca Barbieri 2010-02-24 131 BUG_ON(atomic64_dec_if_positive(&v) != (-one - one));
86a893807 Luca Barbieri 2010-02-24 132 BUG_ON(v.counter != r);
8f4f202b3 Luca Barbieri 2010-02-26 133 #else
7463449b8 Catalin Marinas 2012-07-30 134 #warning Please implement atomic64_dec_if_positive for your architecture and select the above Kconfig symbol
8f4f202b3 Luca Barbieri 2010-02-26 135 #endif
86a893807 Luca Barbieri 2010-02-24 136
86a893807 Luca Barbieri 2010-02-24 137 INIT(onestwos);
25a304f27 Luca Barbieri 2010-03-01 @138 BUG_ON(!atomic64_inc_not_zero(&v));
86a893807 Luca Barbieri 2010-02-24 139 r += one;
86a893807 Luca Barbieri 2010-02-24 140 BUG_ON(v.counter != r);
86a893807 Luca Barbieri 2010-02-24 141
:::::: The code at line 112 was first introduced by commit
:::::: 9efbcd590243045111670c171a951923b877b57d lib: Fix atomic64_add_unless test
:::::: TO: Luca Barbieri <luca@...a-barbieri.com>
:::::: CC: H. Peter Anvin <hpa@...or.com>
---
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