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
