lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:   Mon, 20 Feb 2017 14:48:48 +0530
From:   Viresh Kumar <>
To:     Kevin Hilman <>
Cc:     Rafael Wysocki <>,,
        Pavel Machek <>, Len Brown <>,,,,
        Vincent Guittot <>,,,,,
Subject: Re: [PATCH V2 5/6] PM / domain: Save/restore performance state at
 runtime suspend/resume

On 17-02-17, 15:58, Kevin Hilman wrote:
> Viresh Kumar <> writes:
> > With runtime PM, the devices get suspended while the system is up and
> > running in order to save power. At such times, it is important to
> > re-evaluate the required performance state of the domain, in order to
> > choose a lower state if possible.
> >
> > This patch updates the genpd suspend/resume callbacks to do that.
> >
> > Signed-off-by: Viresh Kumar <>
> Doesn't this assume that a device in the domain would need to change
> performance state while runtime suspended.  How would that happen?
> Rather than adding this here, I would think that drivers would instead
> remove any QoS requests before going into runtime suspend, which would
> trigger an update before runtime suspending.

Okay, lets leave it for the drivers, at least for the time being. I
will drop this patch.


Powered by blists - more mailing lists