Re: [PATCH v5 2/7] units: complement the set of Hz units

[Jonathan Cameron]

On Fri, 12 Aug 2022 16:52:26 +0000
Dmitry Rokosov <DDRokosov@xxxxxxxxxxxxxx> wrote:

> Currently, Hz units do not have milli, micro and nano Hz coefficients.
> Some drivers (IIO especially) use their analogues to calculate
> appropriate Hz values. This patch includes them to units.h definitions,
> so they can be used from different kernel places.
> 
> Signed-off-by: Dmitry Rokosov <ddrokosov@xxxxxxxxxxxxxx>
I'm not really sure why Andrew Morton picked these up as no obviously
dependencies outside of IIO and we have other patches under review that
need these.

Anyhow, I see they are still in Andrew's nonmm-unstable tree, so
assuming he won't mind me picking them up through IIO instead / as well.
If nothing else git will sort this out when the two trees reach
linux-next or upstream anyway.

+Cc Andrew Morton.

this and next two patches applied to the togreg branch of iio.git.
I'll push that out as testing for 0-day to do it's sanity checks then
it'll go out as iio.git / togreg and get picked up by linux-next.

Thanks,

Jonathan

> ---
>  include/linux/units.h | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/include/linux/units.h b/include/linux/units.h
> index 681fc652e3d7..2793a41e73a2 100644
> --- a/include/linux/units.h
> +++ b/include/linux/units.h
> @@ -20,6 +20,9 @@
>  #define PICO	1000000000000ULL
>  #define FEMTO	1000000000000000ULL
>  
> +#define NANOHZ_PER_HZ		1000000000UL
> +#define MICROHZ_PER_HZ		1000000UL
> +#define MILLIHZ_PER_HZ		1000UL
>  #define HZ_PER_KHZ		1000UL
>  #define KHZ_PER_MHZ		1000UL
>  #define HZ_PER_MHZ		1000000UL