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Re: [PATCH 2/2] xen/cpu: round up cpu_khz calculations
- To: Tu Dinh <ngoc-tu.dinh@xxxxxxxxxx>
- From: Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Date: Tue, 14 Apr 2026 13:56:02 +0200
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- Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Alistair Francis <alistair.francis@xxxxxxx>, Connor Davis <connojdavis@xxxxxxxxx>, Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Teddy Astie <teddy.astie@xxxxxxxxxx>
- Delivery-date: Tue, 14 Apr 2026 11:56:18 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On Tue, Apr 14, 2026 at 11:36:22AM +0000, Tu Dinh wrote:
> On 14/04/2026 12:36, Roger Pau Monne wrote:
> > All arches truncate the cpu_khz without taking into account the less
> > significant digits. Instead use DIV_ROUND_UP() when scaling from Hz to kHz
> > to get as more accurate kHz value.
> >
> > Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
>
> Couldn't DIV_ROUND be used here instead for a round-to-closest?
My bad, I got confused with the macro names.
Roger.
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