Thread (7 messages) 7 messages, 5 authors, 2021-08-19

Re: [PATCH] cpuidle: governor: export cpuidle governor functions

From: "Rafael J. Wysocki" <rafael@kernel.org>
Date: 2020-09-22 17:27:45
Also in: linux-arm-msm

Hi Lina,

On Tue, Sep 22, 2020 at 6:12 PM Lina Iyer [off-list ref] wrote:
Hi Rafael,

On Tue, Sep 22 2020 at 10:00 -0600, Rafael J. Wysocki wrote:
quoted
Sorry for the delay.

On Wed, Sep 9, 2020 at 12:15 AM Lina Iyer [off-list ref] wrote:
quoted
Commit 83788c0caed3 ("cpuidle: remove unused exports") removed
capability of registering cpuidle governors, which was unused at that
time. By exporting the symbol, let's allow platform specific modules to
register cpuidle governors and use cpuidle_governor_latency_req() to get
the QoS for the CPU.
Which platform-specific modules may want to do that and why?
We are planning a custom cpuidle governor for QCOM SoCs. With Android,
the idea is to make them loadable modules so they can be in a separate
partition.
Well, the $subject patch is not applicable without a mainline user
requiring this, so it needs to be posted along with that user.

Cheers!
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