From: Ulf Hansson <ulf.hansson@linaro.org>
To: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Kevin Hilman <khilman@baylibre.com>,
Rafael Wysocki <rjw@rjwysocki.net>,
Len Brown <len.brown@intel.com>, Pavel Machek <pavel@ucw.cz>,
linaro-kernel <linaro-kernel@lists.linaro.org>,
"linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Vincent Guittot <vincent.guittot@linaro.org>,
Stephen Boyd <sboyd@codeaurora.org>, Nishanth Menon <nm@ti.com>,
Rob Herring <robh+dt@kernel.org>,
Lina Iyer <lina.iyer@linaro.org>,
Rajendra Nayak <rnayak@codeaurora.org>
Subject: Re: [PATCH V2 4/6] PM / domain: Register for PM QOS performance notifier
Date: Tue, 21 Feb 2017 16:28:13 +0100 [thread overview]
Message-ID: <CAPDyKFqsJsXqR--EL-srPTLLZXxHLYJMGWhTor+YJCO1XxjmQA@mail.gmail.com> (raw)
In-Reply-To: <20170220050138.GO21911@vireshk-i7>
[...]
>
>> > + /* Propagate only if this domain has a single parent */
>>
>> Why? This limitation should be explained in the cover letter and
>> changelog. I would also expect some sort of WARN here since this could
>> otherwise be a rather silent failures.
>
> I think this limitation can just be removed, but I am confused a bit.
>
> I thought that support for multiple parent domains isn't yet there,
> isn't it? And that few people are trying to add it in kernel and the
> stuff is still under review. Like this thread:
A genpd PM domain can have several parents (or to use the genpd
terminology, masters).
This is different from allowing a device to be attached to more than
one PM domains, which is what I think you are referring to. That isn't
supported.
>
> https://lkml.org/lkml/2016/11/22/792
>
> --
> viresh
Kind regards
Uffe
next prev parent reply other threads:[~2017-02-21 15:28 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-09 3:41 [PATCH V2 0/6] PM / Domains: Implement domain performance states Viresh Kumar
2017-02-09 3:41 ` [PATCH V2 1/6] PM / QOS: Add default case to the switch Viresh Kumar
2017-02-09 14:24 ` Pavel Machek
2017-02-10 6:00 ` Viresh Kumar
2017-02-10 12:15 ` Pavel Machek
2017-02-13 3:11 ` Viresh Kumar
2017-02-10 21:24 ` Pavel Machek
2017-02-09 3:41 ` [PATCH V2 2/6] PM / QOS: Pass request type to dev_pm_qos_{add|remove}_notifier() Viresh Kumar
2017-02-09 3:41 ` [PATCH V2 3/6] PM / QOS: Add 'performance' request Viresh Kumar
2017-02-21 15:37 ` Ulf Hansson
2017-02-09 3:41 ` [PATCH V2 4/6] PM / domain: Register for PM QOS performance notifier Viresh Kumar
2017-02-17 23:54 ` Kevin Hilman
2017-02-20 5:01 ` Viresh Kumar
2017-02-21 15:28 ` Ulf Hansson [this message]
2017-02-22 3:25 ` Viresh Kumar
2017-02-09 3:41 ` [PATCH V2 5/6] PM / domain: Save/restore performance state at runtime suspend/resume Viresh Kumar
2017-02-17 23:58 ` Kevin Hilman
2017-02-20 9:18 ` Viresh Kumar
2017-02-09 3:41 ` [PATCH V2 6/6] PM / OPP: Add support to parse domain-performance-state Viresh Kumar
2017-02-17 5:38 ` [PATCH V2 0/6] PM / Domains: Implement domain performance states Viresh Kumar
2017-02-17 7:46 ` Ulf Hansson
2017-02-17 23:22 ` Kevin Hilman
2017-02-20 9:35 ` Viresh Kumar
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