On Thu, 25 Jan 2018 14:28:39 +0100
Christian Borntraeger <borntraeger@xxxxxxxxxx> wrote:
> From: Jens Freimann <jfrei@xxxxxxxxxxxxxxxxxx>
>
> This patch adds a MSB0 bit numbering version of test_and_clear_bit().
>
> Signed-off-by: Jens Freimann <jfrei@xxxxxxxxxxxxxxxxxx>
> Signed-off-by: Michael Mueller <mimu@xxxxxxxxxxxxxxxxxx>
> Reviewed-by: Pierre Morel <pmorel@xxxxxxxxxxxxxxxxxx>
> Reviewed-by: Halil Pasic <pasic@xxxxxxxxxxxxxxxxxx>
> Reviewed-by: Christian Borntraeger <borntraeger@xxxxxxxxxx>
> Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
> Reviewed-by: Cornelia Huck <cohuck@xxxxxxxxxx>
> Signed-off-by: Christian Borntraeger <borntraeger@xxxxxxxxxx>
> ---
> arch/s390/include/asm/bitops.h | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/arch/s390/include/asm/bitops.h b/arch/s390/include/asm/bitops.h
> index 31e400c..86e5b2f 100644
> --- a/arch/s390/include/asm/bitops.h
> +++ b/arch/s390/include/asm/bitops.h
> @@ -261,6 +261,11 @@ static inline void clear_bit_inv(unsigned long nr, volatile unsigned long *ptr)
> return clear_bit(nr ^ (BITS_PER_LONG - 1), ptr);
> }
>
> +static inline int test_and_clear_bit_inv(unsigned long nr, volatile unsigned long *ptr)
> +{
> + return test_and_clear_bit(nr ^ (BITS_PER_LONG - 1), ptr);
> +}
> +
> static inline void __set_bit_inv(unsigned long nr, volatile unsigned long *ptr)
> {
> return __set_bit(nr ^ (BITS_PER_LONG - 1), ptr);
Acked-by: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
--
blue skies,
Martin.
"Reality continues to ruin my life." - Calvin.
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