* [norov:declare_bitmap 3/3] include/linux/find.h:586:62: warning: left-hand operand of comma expression has no effect
@ 2025-08-12 5:00 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2025-08-12 5:00 UTC (permalink / raw)
To: Yury Norov; +Cc: oe-kbuild-all
tree: https://github.com/norov/linux declare_bitmap
head: 01ab0916a9bf06c1c2c964b3747e9a02f812285c
commit: 01ab0916a9bf06c1c2c964b3747e9a02f812285c [3/3] bitmap: move DECLARE_BITMAP() macro to include/linux/bitmap.h
config: m68k-randconfig-2003-20250812 (https://download.01.org/0day-ci/archive/20250812/202508120645.zimfaCd1-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250812/202508120645.zimfaCd1-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/202508120645.zimfaCd1-lkp@intel.com/
All warnings (new ones prefixed by >>):
include/linux/cpumask_types.h:18:37: error: 'const struct cpumask' has no member named 'bits'
#define cpumask_bits(maskp) ((maskp)->bits)
^~
include/linux/cpumask.h:208:11: note: in expansion of macro 'cpumask_bits'
cpumask_bits(srcp3), small_cpumask_bits);
^~~~~~~~~~~~
include/linux/cpumask.h: In function 'cpumask_last':
include/linux/cpumask_types.h:18:37: error: 'const struct cpumask' has no member named 'bits'
#define cpumask_bits(maskp) ((maskp)->bits)
^~
include/linux/cpumask.h:219:23: note: in expansion of macro 'cpumask_bits'
return find_last_bit(cpumask_bits(srcp), small_cpumask_bits);
^~~~~~~~~~~~
include/linux/cpumask.h: In function 'cpumask_next':
include/linux/cpumask_types.h:18:37: error: 'const struct cpumask' has no member named 'bits'
#define cpumask_bits(maskp) ((maskp)->bits)
^~
include/linux/cpumask.h:235:23: note: in expansion of macro 'cpumask_bits'
return find_next_bit(cpumask_bits(srcp), small_cpumask_bits, n + 1);
^~~~~~~~~~~~
include/linux/cpumask.h: In function 'cpumask_next_zero':
include/linux/cpumask_types.h:18:37: error: 'const struct cpumask' has no member named 'bits'
#define cpumask_bits(maskp) ((maskp)->bits)
^~
include/linux/cpumask.h:251:28: note: in expansion of macro 'cpumask_bits'
return find_next_zero_bit(cpumask_bits(srcp), small_cpumask_bits, n+1);
^~~~~~~~~~~~
include/linux/cpumask.h: In function 'cpumask_next_and':
include/linux/cpumask_types.h:18:37: error: 'const struct cpumask' has no member named 'bits'
#define cpumask_bits(maskp) ((maskp)->bits)
^~
include/linux/cpumask.h:296:27: note: in expansion of macro 'cpumask_bits'
return find_next_and_bit(cpumask_bits(src1p), cpumask_bits(src2p),
^~~~~~~~~~~~
include/linux/cpumask_types.h:18:37: error: 'const struct cpumask' has no member named 'bits'
#define cpumask_bits(maskp) ((maskp)->bits)
^~
include/linux/cpumask.h:296:48: note: in expansion of macro 'cpumask_bits'
return find_next_and_bit(cpumask_bits(src1p), cpumask_bits(src2p),
^~~~~~~~~~~~
include/linux/cpumask.h: In function 'cpumask_next_andnot':
include/linux/cpumask_types.h:18:37: error: 'const struct cpumask' has no member named 'bits'
#define cpumask_bits(maskp) ((maskp)->bits)
^~
include/linux/cpumask.h:315:30: note: in expansion of macro 'cpumask_bits'
return find_next_andnot_bit(cpumask_bits(src1p), cpumask_bits(src2p),
^~~~~~~~~~~~
include/linux/cpumask_types.h:18:37: error: 'const struct cpumask' has no member named 'bits'
#define cpumask_bits(maskp) ((maskp)->bits)
^~
include/linux/cpumask.h:315:51: note: in expansion of macro 'cpumask_bits'
return find_next_andnot_bit(cpumask_bits(src1p), cpumask_bits(src2p),
^~~~~~~~~~~~
include/linux/cpumask.h: In function 'cpumask_next_and_wrap':
include/linux/cpumask_types.h:18:37: error: 'const struct cpumask' has no member named 'bits'
#define cpumask_bits(maskp) ((maskp)->bits)
^~
include/linux/cpumask.h:336:32: note: in expansion of macro 'cpumask_bits'
return find_next_and_bit_wrap(cpumask_bits(src1p), cpumask_bits(src2p),
^~~~~~~~~~~~
include/linux/cpumask_types.h:18:37: error: 'const struct cpumask' has no member named 'bits'
#define cpumask_bits(maskp) ((maskp)->bits)
^~
include/linux/cpumask.h:336:53: note: in expansion of macro 'cpumask_bits'
return find_next_and_bit_wrap(cpumask_bits(src1p), cpumask_bits(src2p),
^~~~~~~~~~~~
include/linux/cpumask.h: In function 'cpumask_next_wrap':
include/linux/cpumask_types.h:18:37: error: 'const struct cpumask' has no member named 'bits'
#define cpumask_bits(maskp) ((maskp)->bits)
^~
include/linux/cpumask.h:354:28: note: in expansion of macro 'cpumask_bits'
return find_next_bit_wrap(cpumask_bits(src), small_cpumask_bits, n + 1);
^~~~~~~~~~~~
include/linux/cpumask.h: In function 'cpumask_random':
include/linux/cpumask_types.h:18:37: error: 'const struct cpumask' has no member named 'bits'
#define cpumask_bits(maskp) ((maskp)->bits)
^~
include/linux/cpumask.h:366:25: note: in expansion of macro 'cpumask_bits'
return find_random_bit(cpumask_bits(src), nr_cpu_ids);
^~~~~~~~~~~~
In file included from include/linux/bitmap.h:11,
from include/linux/cpumask.h:12,
from include/linux/smp.h:13,
from include/linux/lockdep.h:14,
from include/linux/spinlock.h:63,
from include/linux/sched.h:37,
from arch/m68k/kernel/asm-offsets.c:15:
include/linux/cpumask.h: In function 'cpumask_any_but':
include/linux/cpumask_types.h:18:37: error: 'const struct cpumask' has no member named 'bits'
#define cpumask_bits(maskp) ((maskp)->bits)
^~
include/linux/find.h:586:41: note: in definition of macro 'for_each_set_bit'
for ((bit) = 0; (bit) = find_next_bit((addr), (size), (bit)), (bit) < (size); (bit)++)
^~~~
include/linux/cpumask.h:377:24: note: in expansion of macro 'cpumask_bits'
for_each_set_bit(cpu, cpumask_bits(mask), small_cpumask_bits)
^~~~~~~~~~~~
include/linux/cpumask.h:472:2: note: in expansion of macro 'for_each_cpu'
for_each_cpu(i, mask)
^~~~~~~~~~~~
>> include/linux/find.h:586:62: warning: left-hand operand of comma expression has no effect [-Wunused-value]
for ((bit) = 0; (bit) = find_next_bit((addr), (size), (bit)), (bit) < (size); (bit)++)
^
include/linux/cpumask.h:377:2: note: in expansion of macro 'for_each_set_bit'
for_each_set_bit(cpu, cpumask_bits(mask), small_cpumask_bits)
^~~~~~~~~~~~~~~~
include/linux/cpumask.h:472:2: note: in expansion of macro 'for_each_cpu'
for_each_cpu(i, mask)
^~~~~~~~~~~~
In file included from include/linux/sched.h:16,
from arch/m68k/kernel/asm-offsets.c:15:
include/linux/cpumask.h: In function 'cpumask_nth':
include/linux/cpumask_types.h:18:37: error: 'const struct cpumask' has no member named 'bits'
#define cpumask_bits(maskp) ((maskp)->bits)
^~
include/linux/cpumask.h:542:22: note: in expansion of macro 'cpumask_bits'
return find_nth_bit(cpumask_bits(srcp), small_cpumask_bits, cpumask_check(cpu));
^~~~~~~~~~~~
include/linux/cpumask.h: In function 'cpumask_nth_and':
include/linux/cpumask_types.h:18:37: error: 'const struct cpumask' has no member named 'bits'
#define cpumask_bits(maskp) ((maskp)->bits)
^~
include/linux/cpumask.h:557:26: note: in expansion of macro 'cpumask_bits'
return find_nth_and_bit(cpumask_bits(srcp1), cpumask_bits(srcp2),
^~~~~~~~~~~~
include/linux/cpumask_types.h:18:37: error: 'const struct cpumask' has no member named 'bits'
#define cpumask_bits(maskp) ((maskp)->bits)
^~
include/linux/cpumask.h:557:47: note: in expansion of macro 'cpumask_bits'
return find_nth_and_bit(cpumask_bits(srcp1), cpumask_bits(srcp2),
^~~~~~~~~~~~
include/linux/cpumask.h: In function 'cpumask_nth_and_andnot':
include/linux/cpumask_types.h:18:37: error: 'const struct cpumask' has no member named 'bits'
#define cpumask_bits(maskp) ((maskp)->bits)
^~
include/linux/cpumask.h:575:33: note: in expansion of macro 'cpumask_bits'
return find_nth_and_andnot_bit(cpumask_bits(srcp1),
^~~~~~~~~~~~
include/linux/cpumask_types.h:18:37: error: 'const struct cpumask' has no member named 'bits'
#define cpumask_bits(maskp) ((maskp)->bits)
^~
include/linux/cpumask.h:576:6: note: in expansion of macro 'cpumask_bits'
cpumask_bits(srcp2),
^~~~~~~~~~~~
include/linux/cpumask_types.h:18:37: error: 'const struct cpumask' has no member named 'bits'
#define cpumask_bits(maskp) ((maskp)->bits)
^~
include/linux/cpumask.h:577:6: note: in expansion of macro 'cpumask_bits'
cpumask_bits(srcp3),
^~~~~~~~~~~~
In file included from include/linux/bitops.h:67,
from include/linux/thread_info.h:27,
from arch/m68k/include/asm/current.h:16,
from include/linux/sched.h:12,
from arch/m68k/kernel/asm-offsets.c:15:
include/linux/cpumask.h: In function 'cpumask_set_cpu':
include/linux/cpumask_types.h:18:37: error: 'struct cpumask' has no member named 'bits'
#define cpumask_bits(maskp) ((maskp)->bits)
^~
arch/m68k/include/asm/bitops.h:61:49: note: in definition of macro 'set_bit'
#define set_bit(nr, vaddr) bset_mem_set_bit(nr, vaddr)
^~~~~
include/linux/cpumask.h:599:30: note: in expansion of macro 'cpumask_bits'
set_bit(cpumask_check(cpu), cpumask_bits(dstp));
^~~~~~~~~~~~
In file included from include/linux/thread_info.h:27,
from arch/m68k/include/asm/current.h:16,
from include/linux/sched.h:12,
from arch/m68k/kernel/asm-offsets.c:15:
include/linux/cpumask.h: In function '__cpumask_set_cpu':
include/linux/cpumask_types.h:18:37: error: 'struct cpumask' has no member named 'bits'
#define cpumask_bits(maskp) ((maskp)->bits)
^~
include/linux/bitops.h:44:37: note: in definition of macro 'bitop'
__builtin_constant_p((uintptr_t)(addr) != (uintptr_t)NULL) && \
^~~~
include/linux/cpumask.h:605:2: note: in expansion of macro '__set_bit'
__set_bit(cpumask_check(cpu), cpumask_bits(dstp));
^~~~~~~~~
include/linux/cpumask.h:605:32: note: in expansion of macro 'cpumask_bits'
__set_bit(cpumask_check(cpu), cpumask_bits(dstp));
^~~~~~~~~~~~
include/linux/cpumask_types.h:18:37: error: 'struct cpumask' has no member named 'bits'
#define cpumask_bits(maskp) ((maskp)->bits)
^~
include/linux/bitops.h:45:16: note: in definition of macro 'bitop'
(uintptr_t)(addr) != (uintptr_t)NULL && \
^~~~
include/linux/cpumask.h:605:2: note: in expansion of macro '__set_bit'
__set_bit(cpumask_check(cpu), cpumask_bits(dstp));
^~~~~~~~~
include/linux/cpumask.h:605:32: note: in expansion of macro 'cpumask_bits'
__set_bit(cpumask_check(cpu), cpumask_bits(dstp));
^~~~~~~~~~~~
include/linux/cpumask_types.h:18:37: error: 'struct cpumask' has no member named 'bits'
#define cpumask_bits(maskp) ((maskp)->bits)
^~
include/linux/bitops.h:46:50: note: in definition of macro 'bitop'
__builtin_constant_p(*(const unsigned long *)(addr))) ? \
^~~~
include/linux/cpumask.h:605:2: note: in expansion of macro '__set_bit'
vim +586 include/linux/find.h
6b8ecb84f8f640 include/asm-generic/bitops/find.h Yury Norov 2021-08-14 584
bc9d6635c293a2 include/linux/find.h Yury Norov 2021-08-14 585 #define for_each_set_bit(bit, addr, size) \
fdae96a3fc7f70 include/linux/find.h Yury Norov 2022-09-19 @586 for ((bit) = 0; (bit) = find_next_bit((addr), (size), (bit)), (bit) < (size); (bit)++)
bc9d6635c293a2 include/linux/find.h Yury Norov 2021-08-14 587
:::::: The code at line 586 was first introduced by commit
:::::: fdae96a3fc7f70eb8ff9619550d7fa604719626a lib/find: optimize for_each() macros
:::::: TO: Yury Norov <yury.norov@gmail.com>
:::::: CC: Yury Norov <yury.norov@gmail.com>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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