linux-kernel - Re: [PATCH v2] average: Clarify the restrictions

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Message-ID: <97352295-6527-f146-6f55-c4577a80f3a2@infradead.org>
Date:   Wed, 1 Jun 2022 08:58:20 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Jui-Tse Huang <juitse.huang@...il.com>,
        linux-kernel@...r.kernel.org
Cc:     Mark Rutland <mark.rutland@....com>,
        Johannes Berg <johannes.berg@...el.com>,
        Bruno Randolf <br1@...fach.org>,
        Ching-Chun Huang <jserv@...s.ncku.edu.tw>
Subject: Re: [PATCH v2] average: Clarify the restrictions



On 6/1/22 00:19, Jui-Tse Huang wrote:
> There is several restrictions in the EWMA helper macro that the
> developers should take care of, but the comment does not mentioned yet,
> thus, this patch clarify the restrictions.
> 
> Signed-off-by: Jui-Tse Huang <juitse.huang@...il.com>
> ---
> 
> Notes:
>     v2: fix spelling and wording (Bruno Randolf)
> 
>  include/linux/average.h | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/include/linux/average.h b/include/linux/average.h
> index a1a8f09631ce..ff0953ba2820 100644
> --- a/include/linux/average.h
> +++ b/include/linux/average.h
> @@ -13,6 +13,9 @@
>   * precision and fall-off coefficient determined at compile-time
>   * and built into the generated helper funtions.

                                          functions.
>   *
> + * This implementation supports up to 30 bits of precition, and only

                                                    precision,

> + * the API for fetching non-fractional part is provided for now.
> + *
>   * The first argument to the macro is the name that will be used
>   * for the struct and helper functions.
>   *

-- 
~Randy