Re: [PATCH v3 0/8] PM / ACPI / i2c: Deploy runtime PM centric path for system sleep

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Monday, September 4, 2017 7:46:37 AM CEST Lukas Wunner wrote:
> On Mon, Sep 04, 2017 at 02:17:21AM +0200, Rafael J. Wysocki wrote:
> > OTOH I'm starting to think that direct_complete is only theoretically
> > useful and may not be actually set very often in practice, whereas it
> > adds significant complexity to the code, so I'm not sure about it any
> > more.
> 
> That makes me come out of the woodwork as a direct_complete fan:
> 
> Runtime resuming a discrete GPU on a modern dual GPU laptop takes about
> 1.5 sec, runtime resuming Thunderbolt controllers more than 2 sec.
> A discrete GPU easily consumes 10W, a Thunderbolt controller 2W.
> 
> So not having direct_complete would noticeably delay system suspend and
> resume as well as reduce battery life.

Well, that's a good reason for having it. :-)

Thanks,
Rafael




[Index of Archives]     [Linux GPIO]     [Linux SPI]     [Linux Hardward Monitoring]     [LM Sensors]     [Linux USB Devel]     [Linux Media]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux