linux-kernel - Re: [PATCH v2 2/4] mm/ksm: add sysfs knobs for advisor

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Message-ID: <87pm01r8eb.fsf@devkernel.io>
Date:   Wed, 22 Nov 2023 09:43:09 -0800
From:   Stefan Roesch <shr@...kernel.io>
To:     David Hildenbrand <david@...hat.com>
Cc:     kernel-team@...com, akpm@...ux-foundation.org, hannes@...xchg.org,
        riel@...riel.com, linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH v2 2/4] mm/ksm: add sysfs knobs for advisor


David Hildenbrand <david@...hat.com> writes:

> On 28.10.23 02:09, Stefan Roesch wrote:
>> This adds four new knobs for the KSM advisor to influence its behaviour.
>> The knobs are:
>> - advisor_mode:
>>      0: no advisor (default)
>>      1: scan time advisor
>> - advisor_min_cpu: 15 (default, cpu usage percent)
>> - advisor_max_cpu: 70 (default, cpu usage percent)
>> - advisor_min_pages: 500 (default)
>> - advisor_max_pages: 30000 (default)
>> - advisor_target_scan_time: 200 (default in seconds)
>
> Is there a way we can avoid exposing advisor_min_pages/advisor_max_pages and
> just have this internal e.g., as defines?

Yes, we can.