linux-kernel - Re: [PATCH v4 0/5] Add required-opps support to devfreq passive gov

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Date:   Thu, 14 Nov 2019 00:23:41 -0800
From:   Saravana Kannan <saravanak@...gle.com>
To:     Chanwoo Choi <cw00.choi@...sung.com>
Cc:     MyungJoo Ham <myungjoo.ham@...sung.com>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        Viresh Kumar <vireshk@...nel.org>, Nishanth Menon <nm@...com>,
        Stephen Boyd <sboyd@...nel.org>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Sibi Sankar <sibis@...eaurora.org>,
        Android Kernel Team <kernel-team@...roid.com>,
        Linux PM <linux-pm@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 0/5] Add required-opps support to devfreq passive gov

On Wed, Nov 13, 2019 at 11:48 PM Chanwoo Choi <cw00.choi@...sung.com> wrote:
>
> Dear Saravana,
>
> Any other progress of this series?

Hi Chanwoo,

Thanks for checking. I haven't abandoned this patch series. This patch
series depends on "lazy linking" of required-opps to avoid a cyclic
dependency between devfreq and OPP table population. But Viresh wasn't
happy with my implementation of the lazy liking for reasonable
reasons.

I had a chat with Viresh during one of the several conferences that I
met him at. To fix the lazy linking in the way he wanted it meant we
had to fix other issues in the OPP framework that arise when OPP
tables are shared in DT but not in memory. So he was kind enough to
sign up to add lazy linking support to OPPs so that I won't have to do
it. So, I'm waiting on that. So once that's added, I should be able to
drop a few patches in this series, do some minor updates and then this
will be good to go.

Thanks,
Saravana