Messages in this thread | | | Date | Sat, 27 Aug 2022 10:21:51 +0100 | From | "Sudip Mukherjee (Codethink)" <> | Subject | mainline build failure due to 8238b4579866 ("wait_on_bit: add an acquire memory barrier") |
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Hi All,
The latest mainline kernel branch fails to build alpha and s390 allmodconfig.
alpha error is:
In file included from ./include/linux/thread_info.h:27, from ./include/asm-generic/current.h:5, from ./arch/alpha/include/generated/asm/current.h:1, from ./include/linux/sched.h:12, from arch/alpha/kernel/asm-offsets.c:10: ./include/linux/wait_bit.h: In function 'wait_on_bit': ./include/asm-generic/bitops/non-instrumented-non-atomic.h:15:33: error: implicit declaration of function 'arch_test_bit_acquire'; did you mean '_test_bit_acquire'? [-Werror=implicit-function-declaration] 15 | #define _test_bit_acquire arch_test_bit_acquire | ^~~~~~~~~~~~~~~~~~~~~ ./include/linux/bitops.h:53:32: note: in definition of macro 'bitop' 53 | const##op(nr, addr) : op(nr, addr)) | ^~ ./include/linux/bitops.h:62:47: note: in expansion of macro '_test_bit_acquire' 62 | #define test_bit_acquire(nr, addr) bitop(_test_bit_acquire, nr, addr) | ^~~~~~~~~~~~~~~~~ ./include/linux/wait_bit.h:74:14: note: in expansion of macro 'test_bit_acquire' 74 | if (!test_bit_acquire(bit, word)) | ^~~~~~~~~~~~~~~~
s390 error is:
In file included from ./arch/s390/include/asm/bitops.h:211, from ./include/linux/bitops.h:68, from ./include/linux/log2.h:12, from kernel/bounds.c:13: ./include/asm-generic/bitops/instrumented-non-atomic.h: In function '_test_bit_acquire': ./include/asm-generic/bitops/instrumented-non-atomic.h:154:16: error: implicit declaration of function 'arch_test_bit_acquire'; did you mean '_test_bit_acquire'? [-Werror=implicit-function-declaration] 154 | return arch_test_bit_acquire(nr, addr); | ^~~~~~~~~~~~~~~~~~~~~ | _test_bit_acquire
git bisect pointed to 8238b4579866 ("wait_on_bit: add an acquire memory barrier"). And, reverting that commit has fixed the build failure.
I will be happy to test any patch or provide any extra log if needed.
-- Regards Sudip
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