* [norov:find_and_bit 14/34] include/linux/find.h:859:9: warning: statement with no effect
@ 2023-11-26 23:32 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2023-11-26 23:32 UTC (permalink / raw)
To: Yury Norov; +Cc: oe-kbuild-all
tree: https://github.com/norov/linux find_and_bit
head: 0509c68d320cff2284c7fc39d37051e465c429ec
commit: 82d8aa9f9c50fa8c7049ba295a413770eefb41c1 [14/34] scsi: core: XXXX use atomic find_bit() API where appropriate
config: x86_64-defconfig (https://download.01.org/0day-ci/archive/20231127/202311270643.5nYR7aHv-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-12) 11.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231127/202311270643.5nYR7aHv-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/202311270643.5nYR7aHv-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from include/linux/bitmap.h:10,
from include/linux/cpumask.h:12,
from arch/x86/include/asm/cpumask.h:5,
from arch/x86/include/asm/msr.h:11,
from arch/x86/include/asm/processor.h:23,
from arch/x86/include/asm/cpufeature.h:5,
from arch/x86/include/asm/thread_info.h:53,
from include/linux/thread_info.h:60,
from arch/x86/include/asm/preempt.h:9,
from include/linux/preempt.h:79,
from include/linux/spinlock.h:56,
from include/linux/wait.h:9,
from include/linux/mempool.h:8,
from include/linux/bio.h:8,
from drivers/scsi/scsi_lib.c:12:
drivers/scsi/scsi_lib.c: In function 'scsi_evt_thread':
>> include/linux/find.h:859:9: warning: statement with no effect [-Wunused-value]
859 | for ((bit); \
| ^~~
drivers/scsi/scsi_lib.c:2502:9: note: in expansion of macro 'for_each_test_and_clear_bit_from'
2502 | for_each_test_and_clear_bit_from(evt_type, sdev->pending_events, SDEV_EVT_LAST + 1)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +859 include/linux/find.h
6b8ecb84f8f640 include/asm-generic/bitops/find.h Yury Norov 2021-08-14 828
bc9d6635c293a2 include/linux/find.h Yury Norov 2021-08-14 829 #define for_each_set_bit(bit, addr, size) \
fdae96a3fc7f70 include/linux/find.h Yury Norov 2022-09-19 830 for ((bit) = 0; (bit) = find_next_bit((addr), (size), (bit)), (bit) < (size); (bit)++)
bc9d6635c293a2 include/linux/find.h Yury Norov 2021-08-14 831
33e67710beda78 include/linux/find.h Yury Norov 2022-09-19 832 #define for_each_and_bit(bit, addr1, addr2, size) \
fdae96a3fc7f70 include/linux/find.h Yury Norov 2022-09-19 833 for ((bit) = 0; \
fdae96a3fc7f70 include/linux/find.h Yury Norov 2022-09-19 834 (bit) = find_next_and_bit((addr1), (addr2), (size), (bit)), (bit) < (size);\
fdae96a3fc7f70 include/linux/find.h Yury Norov 2022-09-19 835 (bit)++)
33e67710beda78 include/linux/find.h Yury Norov 2022-09-19 836
5f75ff295c662c include/linux/find.h Valentin Schneider 2022-10-03 837 #define for_each_andnot_bit(bit, addr1, addr2, size) \
5f75ff295c662c include/linux/find.h Valentin Schneider 2022-10-03 838 for ((bit) = 0; \
5f75ff295c662c include/linux/find.h Valentin Schneider 2022-10-03 839 (bit) = find_next_andnot_bit((addr1), (addr2), (size), (bit)), (bit) < (size);\
5f75ff295c662c include/linux/find.h Valentin Schneider 2022-10-03 840 (bit)++)
5f75ff295c662c include/linux/find.h Valentin Schneider 2022-10-03 841
1470afefc3c42d include/linux/find.h Dave Chinner 2023-03-15 842 #define for_each_or_bit(bit, addr1, addr2, size) \
1470afefc3c42d include/linux/find.h Dave Chinner 2023-03-15 843 for ((bit) = 0; \
1470afefc3c42d include/linux/find.h Dave Chinner 2023-03-15 844 (bit) = find_next_or_bit((addr1), (addr2), (size), (bit)), (bit) < (size);\
1470afefc3c42d include/linux/find.h Dave Chinner 2023-03-15 845 (bit)++)
1470afefc3c42d include/linux/find.h Dave Chinner 2023-03-15 846
bc9d6635c293a2 include/linux/find.h Yury Norov 2021-08-14 847 /* same as for_each_set_bit() but use bit as value to start with */
bc9d6635c293a2 include/linux/find.h Yury Norov 2021-08-14 848 #define for_each_set_bit_from(bit, addr, size) \
fdae96a3fc7f70 include/linux/find.h Yury Norov 2022-09-19 849 for (; (bit) = find_next_bit((addr), (size), (bit)), (bit) < (size); (bit)++)
bc9d6635c293a2 include/linux/find.h Yury Norov 2021-08-14 850
190bed278d94d3 include/linux/find.h Yury Norov 2023-11-18 851 /* same as for_each_set_bit() but atomically clears each found bit */
190bed278d94d3 include/linux/find.h Yury Norov 2023-11-18 852 #define for_each_test_and_clear_bit(bit, addr, size) \
190bed278d94d3 include/linux/find.h Yury Norov 2023-11-18 853 for ((bit) = 0; \
190bed278d94d3 include/linux/find.h Yury Norov 2023-11-18 854 (bit) = find_and_clear_next_bit((addr), (size), (bit)), (bit) < (size); \
190bed278d94d3 include/linux/find.h Yury Norov 2023-11-18 855 (bit)++)
190bed278d94d3 include/linux/find.h Yury Norov 2023-11-18 856
190bed278d94d3 include/linux/find.h Yury Norov 2023-11-18 857 /* same as for_each_set_bit_from() but atomically clears each found bit */
190bed278d94d3 include/linux/find.h Yury Norov 2023-11-18 858 #define for_each_test_and_clear_bit_from(bit, addr, size) \
190bed278d94d3 include/linux/find.h Yury Norov 2023-11-18 @859 for ((bit); \
190bed278d94d3 include/linux/find.h Yury Norov 2023-11-18 860 (bit) = find_and_clear_next_bit((addr), (size), (bit)), (bit) < (size); \
190bed278d94d3 include/linux/find.h Yury Norov 2023-11-18 861 (bit)++)
190bed278d94d3 include/linux/find.h Yury Norov 2023-11-18 862
:::::: The code at line 859 was first introduced by commit
:::::: 190bed278d94d37755ff6c1a6096536ff0c72e93 lib/find: add atomic find_bit() primitives
:::::: 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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