diff options
| author | Mikulas Patocka <mpatocka@redhat.com> | 2022-08-26 16:43:51 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-08-27 09:49:54 -0700 |
| commit | d6ffe6067a54972564552ea45d320fb98db1ac5e (patch) | |
| tree | f5e9fe0bc2a8eaa1669802af515b91498ea806af /arch/s390 | |
| parent | e022620b5d056e822e42eb9bc0f24fcb97389d86 (diff) | |
provide arch_test_bit_acquire for architectures that define test_bit
Some architectures define their own arch_test_bit and they also need
arch_test_bit_acquire, otherwise they won't compile. We also clean up
the code by using the generic test_bit if that is equivalent to the
arch-specific version.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Fixes: 8238b4579866 ("wait_on_bit: add an acquire memory barrier")
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/bitops.h | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/arch/s390/include/asm/bitops.h b/arch/s390/include/asm/bitops.h index 9a7d15da966e..2de74fcd0578 100644 --- a/arch/s390/include/asm/bitops.h +++ b/arch/s390/include/asm/bitops.h @@ -176,14 +176,8 @@ arch___test_and_change_bit(unsigned long nr, volatile unsigned long *addr) return old & mask; } -static __always_inline bool -arch_test_bit(unsigned long nr, const volatile unsigned long *addr) -{ - const volatile unsigned long *p = __bitops_word(nr, addr); - unsigned long mask = __bitops_mask(nr); - - return *p & mask; -} +#define arch_test_bit generic_test_bit +#define arch_test_bit_acquire generic_test_bit_acquire static inline bool arch_test_and_set_bit_lock(unsigned long nr, volatile unsigned long *ptr) |