Re: [RFC PATCH 8/8] arm64: add sysfs cpu_capacity attribute

Mark Brown
2015-12-10T15:59:50Z

[-- Attachment #1: Type: text/plain, Size: 710 bytes --]

On Thu, Dec 10, 2015 at 02:15:04PM +0000, Dietmar Eggemann wrote:
> On 23/11/15 14:28, Juri Lelli wrote:

> > The new attribute shows up as:

> > /sys/devices/system/cpu/cpu*/cpu_capacity

> This sysfs interface is not really needed for arm or arm64. People can
> build the dt blob if they want to change the values. Less code to carry
> ... Let's focus on the core functionality, which is parsing cpu capacity
> from dt file to task scheduler for heterogeneous systems.

That does make the tuning process much more cumbersome - users have to
rebuild and reboot to tweak the numbers rather than just tweaking the
numbers and rerunning the benchmark (which seems like something people
would want to automate).

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 473 bytes --]