netdev - Re: [PATCH net-next] mlxsw: update adjfine to use adjust_by_scaled

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Date:   Tue, 15 Nov 2022 11:23:53 +0200
From:   Ido Schimmel <idosch@...dia.com>
To:     Jacob Keller <jacob.e.keller@...el.com>, petrm@...dia.com
Cc:     netdev@...r.kernel.org, Amit Cohen <amcohen@...dia.com>,
        Petr Machata <petrm@...dia.com>
Subject: Re: [PATCH net-next] mlxsw: update adjfine to use
 adjust_by_scaled_ppm

On Mon, Nov 14, 2022 at 01:37:01PM -0800, Jacob Keller wrote:
> The mlxsw adjfine implementation in the spectrum_ptp.c file converts
> scaled_ppm into ppb before updating a cyclecounter multiplier using the
> standard "base * ppb / 1billion" calculation.
> 
> This can be re-written to use adjust_by_scaled_ppm, directly using the
> scaled parts per million and reducing the amount of code required to
> express this calculation.
> 
> We still calculate the parts per billion for passing into
> mlxsw_sp_ptp_phc_adjfreq because this function requires the input to be in
> parts per billion.
> 
> Signed-off-by: Jacob Keller <jacob.e.keller@...el.com>
> Cc: Amit Cohen <amcohen@...dia.com>
> Cc: Ido Schimmel <idosch@...dia.com>
> Cc: Petr Machata <petrm@...dia.com>

Thanks for the patch, code looks good to me.

Petr, please apply this patch to our tree for testing.