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s390/bitops: add for_each_set_bit_inv helper

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Same helper function like for_each_set_bit in generic code.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens 2017-02-25 12:16:31 +01:00 committed by Martin Schwidefsky
parent bffc880b45
commit 09214545c4
1 changed files with 5 additions and 0 deletions
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5
arch/s390/include/asm/bitops.h
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@ -253,6 +253,11 @@ unsigned long find_first_bit_inv(const unsigned long *addr, unsigned long size);
unsigned long find_next_bit_inv(const unsigned long *addr, unsigned long size,
unsigned long offset);
#define for_each_set_bit_inv(bit, addr, size) \
for ((bit) = find_first_bit_inv((addr), (size)); \
(bit) < (size); \
(bit) = find_next_bit_inv((addr), (size), (bit) + 1))
static inline void set_bit_inv(unsigned long nr, volatile unsigned long *ptr)
{
return set_bit(nr ^ (BITS_PER_LONG - 1), ptr);