From: kernel test robot <lkp@intel.com>
To: Thomas Gleixner <tglx@kernel.org>
Cc: oe-kbuild-all@lists.linux.dev
Subject: [tglx-devel:irqflags 18/22] arch/openrisc/include/asm/bitops/atomic.h:12:20: warning: conflicting types for 'set_bit'
Date: Wed, 02 Sep 2026 03:30:36 +0800 [thread overview]
Message-ID: <202609020326.EqDeXNs3-lkp@intel.com> (raw)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git irqflags
head: ec3ae38eecb47043e2e2d2138e35ee22dedfced4
commit: 1f816ea094fc01ff1b9954106e93489661fb42af [18/22] irqflags: Provide refcounted local_irq_*() variants
config: openrisc-randconfig-r064-20260902 (https://download.01.org/0day-ci/archive/20260902/202609020326.EqDeXNs3-lkp@intel.com/config)
compiler: or1k-linux-gcc (GCC) 9.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260902/202609020326.EqDeXNs3-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202609020326.EqDeXNs3-lkp@intel.com/
All warnings (new ones prefixed by >>):
include/asm-generic/div64.h:185:6: error: implicit declaration of function 'is_power_of_2' [-Werror=implicit-function-declaration]
185 | is_power_of_2(__base)) { \
| ^~~~~~~~~~~~~
include/linux/compiler.h:57:52: note: in definition of macro '__trace_if_var'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~
include/asm-generic/div64.h:184:2: note: in expansion of macro 'if'
184 | if (__builtin_constant_p(__base) && \
| ^~
include/linux/math64.h:106:15: note: in expansion of macro 'do_div'
106 | *remainder = do_div(dividend, divisor);
| ^~~~~~
In file included from ./arch/openrisc/include/generated/asm/div64.h:1,
from include/linux/math.h:6,
from include/linux/math64.h:6,
from include/linux/time64.h:5,
from include/linux/restart_block.h:9,
from include/linux/thread_info.h:14,
from include/asm-generic/preempt.h:5,
from ./arch/openrisc/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:109,
from include/linux/irqflags.h:16,
from arch/openrisc/include/asm/bitops.h:24,
from include/linux/bitops.h:67,
from include/linux/log2.h:12,
from kernel/bounds.c:14:
include/asm-generic/div64.h:187:11: error: implicit declaration of function 'ilog2' [-Werror=implicit-function-declaration]
187 | (n) >>= ilog2(__base); \
| ^~~~~
include/linux/math64.h:106:15: note: in expansion of macro 'do_div'
106 | *remainder = do_div(dividend, divisor);
| ^~~~~~
In file included from arch/openrisc/include/asm/page.h:78,
from arch/openrisc/include/asm/processor.h:19,
from arch/openrisc/include/asm/thread_info.h:22,
from include/linux/thread_info.h:62,
from include/asm-generic/preempt.h:5,
from ./arch/openrisc/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:109,
from include/linux/irqflags.h:16,
from arch/openrisc/include/asm/bitops.h:24,
from include/linux/bitops.h:67,
from include/linux/log2.h:12,
from kernel/bounds.c:14:
include/asm-generic/getorder.h: In function 'get_order':
include/asm-generic/getorder.h:44:9: error: implicit declaration of function 'fls' [-Werror=implicit-function-declaration]
44 | return fls(size);
| ^~~
In file included from include/asm-generic/preempt.h:5,
from ./arch/openrisc/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:109,
from include/linux/irqflags.h:16,
from arch/openrisc/include/asm/bitops.h:24,
from include/linux/bitops.h:67,
from include/linux/log2.h:12,
from kernel/bounds.c:14:
include/linux/thread_info.h: In function 'set_ti_thread_flag':
include/linux/thread_info.h:104:2: error: implicit declaration of function 'set_bit'; did you mean 'test_bit'? [-Werror=implicit-function-declaration]
104 | set_bit(flag, (unsigned long *)&ti->flags);
| ^~~~~~~
| test_bit
include/linux/thread_info.h: In function 'clear_ti_thread_flag':
include/linux/thread_info.h:109:2: error: implicit declaration of function 'clear_bit' [-Werror=implicit-function-declaration]
109 | clear_bit(flag, (unsigned long *)&ti->flags);
| ^~~~~~~~~
include/linux/thread_info.h: In function 'test_and_set_ti_thread_flag':
include/linux/thread_info.h:123:9: error: implicit declaration of function 'test_and_set_bit' [-Werror=implicit-function-declaration]
123 | return test_and_set_bit(flag, (unsigned long *)&ti->flags);
| ^~~~~~~~~~~~~~~~
include/linux/thread_info.h: In function 'test_and_clear_ti_thread_flag':
include/linux/thread_info.h:128:9: error: implicit declaration of function 'test_and_clear_bit'; did you mean 'const___clear_bit'? [-Werror=implicit-function-declaration]
128 | return test_and_clear_bit(flag, (unsigned long *)&ti->flags);
| ^~~~~~~~~~~~~~~~~~
| const___clear_bit
In file included from include/linux/log2.h:12,
from kernel/bounds.c:14:
include/linux/thread_info.h: In function 'test_ti_thread_flag':
include/linux/bitops.h:60:35: error: implicit declaration of function '_test_bit'; did you mean 'test_bit'? [-Werror=implicit-function-declaration]
60 | #define test_bit(nr, addr) bitop(_test_bit, nr, addr)
| ^~~~~~~~~
include/linux/bitops.h:47:25: note: in definition of macro 'bitop'
47 | const##op(nr, addr) : op(nr, addr))
| ^~
include/linux/thread_info.h:133:9: note: in expansion of macro 'test_bit'
133 | return test_bit(flag, (unsigned long *)&ti->flags);
| ^~~~~~~~
In file included from arch/openrisc/include/asm/bitops.h:24,
from include/linux/bitops.h:67,
from include/linux/log2.h:12,
from kernel/bounds.c:14:
include/linux/irqflags.h: In function 'raw_safe_halt':
include/linux/irqflags.h:299:2: error: implicit declaration of function 'arch_safe_halt'; did you mean 'raw_safe_halt'? [-Werror=implicit-function-declaration]
299 | arch_safe_halt();
| ^~~~~~~~~~~~~~
| raw_safe_halt
In file included from arch/openrisc/include/asm/bitops.h:43,
from include/linux/bitops.h:67,
from include/linux/log2.h:12,
from kernel/bounds.c:14:
arch/openrisc/include/asm/bitops/atomic.h: At top level:
>> arch/openrisc/include/asm/bitops/atomic.h:12:20: warning: conflicting types for 'set_bit'
12 | static inline void set_bit(int nr, volatile unsigned long *addr)
| ^~~~~~~
arch/openrisc/include/asm/bitops/atomic.h:12:20: error: static declaration of 'set_bit' follows non-static declaration
In file included from include/asm-generic/preempt.h:5,
from ./arch/openrisc/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:109,
from include/linux/irqflags.h:16,
from arch/openrisc/include/asm/bitops.h:24,
from include/linux/bitops.h:67,
from include/linux/log2.h:12,
from kernel/bounds.c:14:
include/linux/thread_info.h:104:2: note: previous implicit declaration of 'set_bit' was here
104 | set_bit(flag, (unsigned long *)&ti->flags);
| ^~~~~~~
In file included from arch/openrisc/include/asm/bitops.h:43,
from include/linux/bitops.h:67,
from include/linux/log2.h:12,
from kernel/bounds.c:14:
>> arch/openrisc/include/asm/bitops/atomic.h:29:20: warning: conflicting types for 'clear_bit'
29 | static inline void clear_bit(int nr, volatile unsigned long *addr)
| ^~~~~~~~~
arch/openrisc/include/asm/bitops/atomic.h:29:20: error: static declaration of 'clear_bit' follows non-static declaration
In file included from include/asm-generic/preempt.h:5,
from ./arch/openrisc/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:109,
from include/linux/irqflags.h:16,
from arch/openrisc/include/asm/bitops.h:24,
from include/linux/bitops.h:67,
from include/linux/log2.h:12,
from kernel/bounds.c:14:
include/linux/thread_info.h:109:2: note: previous implicit declaration of 'clear_bit' was here
109 | clear_bit(flag, (unsigned long *)&ti->flags);
| ^~~~~~~~~
In file included from arch/openrisc/include/asm/bitops.h:43,
from include/linux/bitops.h:67,
from include/linux/log2.h:12,
from kernel/bounds.c:14:
arch/openrisc/include/asm/bitops/atomic.h:63:19: error: static declaration of 'test_and_set_bit' follows non-static declaration
63 | static inline int test_and_set_bit(int nr, volatile unsigned long *addr)
| ^~~~~~~~~~~~~~~~
In file included from include/asm-generic/preempt.h:5,
from ./arch/openrisc/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:109,
from include/linux/irqflags.h:16,
from arch/openrisc/include/asm/bitops.h:24,
from include/linux/bitops.h:67,
from include/linux/log2.h:12,
from kernel/bounds.c:14:
include/linux/thread_info.h:123:9: note: previous implicit declaration of 'test_and_set_bit' was here
123 | return test_and_set_bit(flag, (unsigned long *)&ti->flags);
| ^~~~~~~~~~~~~~~~
In file included from arch/openrisc/include/asm/bitops.h:43,
from include/linux/bitops.h:67,
from include/linux/log2.h:12,
from kernel/bounds.c:14:
arch/openrisc/include/asm/bitops/atomic.h:83:19: error: static declaration of 'test_and_clear_bit' follows non-static declaration
83 | static inline int test_and_clear_bit(int nr, volatile unsigned long *addr)
| ^~~~~~~~~~~~~~~~~~
In file included from include/asm-generic/preempt.h:5,
from ./arch/openrisc/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:109,
from include/linux/irqflags.h:16,
from arch/openrisc/include/asm/bitops.h:24,
from include/linux/bitops.h:67,
from include/linux/log2.h:12,
from kernel/bounds.c:14:
include/linux/thread_info.h:128:9: note: previous implicit declaration of 'test_and_clear_bit' was here
128 | return test_and_clear_bit(flag, (unsigned long *)&ti->flags);
| ^~~~~~~~~~~~~~~~~~
In file included from kernel/bounds.c:14:
include/linux/log2.h:45:6: error: conflicting types for 'is_power_of_2'
45 | bool is_power_of_2(unsigned long n)
| ^~~~~~~~~~~~~
In file included from include/asm-generic/bug.h:5,
from arch/openrisc/include/asm/bug.h:5,
from include/linux/bug.h:5,
from include/linux/page-flags.h:10,
from kernel/bounds.c:11:
include/asm-generic/div64.h:185:6: note: previous implicit declaration of 'is_power_of_2' was here
185 | is_power_of_2(__base)) { \
| ^~~~~~~~~~~~~
include/linux/compiler.h:57:52: note: in definition of macro '__trace_if_var'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~
include/asm-generic/div64.h:184:2: note: in expansion of macro 'if'
184 | if (__builtin_constant_p(__base) && \
| ^~
include/linux/math64.h:106:15: note: in expansion of macro 'do_div'
106 | *remainder = do_div(dividend, divisor);
| ^~~~~~
cc1: some warnings being treated as errors
make[3]: *** [scripts/Makefile.build:185: kernel/bounds.s] Error 1
make[3]: Target 'prepare' not remade because of errors.
make[2]: *** [Makefile:1425: prepare0] Error 2
make[2]: Target 'prepare' not remade because of errors.
make[1]: *** [Makefile:248: __sub-make] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [Makefile:248: __sub-make] Error 2
make: Target 'prepare' not remade because of errors.
vim +/set_bit +12 arch/openrisc/include/asm/bitops/atomic.h
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 11
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 @12 static inline void set_bit(int nr, volatile unsigned long *addr)
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 13 {
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 14 unsigned long mask = BIT_MASK(nr);
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 15 unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 16 unsigned long tmp;
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 17
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 18 __asm__ __volatile__(
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 19 "1: l.lwa %0,0(%1) \n"
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 20 " l.or %0,%0,%2 \n"
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 21 " l.swa 0(%1),%0 \n"
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 22 " l.bnf 1b \n"
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 23 " l.nop \n"
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 24 : "=&r"(tmp)
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 25 : "r"(p), "r"(mask)
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 26 : "cc", "memory");
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 27 }
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 28
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 @29 static inline void clear_bit(int nr, volatile unsigned long *addr)
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 30 {
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 31 unsigned long mask = BIT_MASK(nr);
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 32 unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 33 unsigned long tmp;
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 34
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 35 __asm__ __volatile__(
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 36 "1: l.lwa %0,0(%1) \n"
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 37 " l.and %0,%0,%2 \n"
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 38 " l.swa 0(%1),%0 \n"
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 39 " l.bnf 1b \n"
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 40 " l.nop \n"
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 41 : "=&r"(tmp)
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 42 : "r"(p), "r"(~mask)
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 43 : "cc", "memory");
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 44 }
0e9f9fd20ce931c Stefan Kristiansson 2014-05-12 45
:::::: The code at line 12 was first introduced by commit
:::::: 0e9f9fd20ce931cc2cf0519c56ae33fc74d656ad openrisc: add atomic bitops
:::::: TO: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
:::::: CC: Stafford Horne <shorne@gmail.com>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2026-09-01 19:31 UTC|newest]
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