Subject: [PATCH 1/2] arm64: dts: r8a7795: Add Cortex-A53 CPU cores

From: [email-masked] (Dirk Behme)
Date: Fri, 18 Dec 2015 12:58:33 +0100

Hi Geert,

On 18.12.2015 12:02, Geert Uytterhoeven wrote:
> Hi Dirk,
>
> On Sat, Dec 12, 2015 at 8:16 AM, Dirk Behme <[email-masked]> wrote:
>> From: Takeshi Kihara <[email-masked]>
>>
>> This patch adds Cortex-A53 CPU cores to r8a7795 SoC for a total of 8
>> cores (4 x Cortex-A57 + 4 x Cortex-A53).
>>
>> Signed-off-by: Takeshi Kihara <[email-masked]>
>> Signed-off-by: Dirk Behme <[email-masked]>
>
> Thanks, I can confirm this works.
>
> However, as the scheduler is not big.LITTLE aware (running processes are not
> migrated automatically to the faster CA57 cores when these are idle), it makes
> performance less deterministic.

What's the plan, then?

Waiting for big.LITTLE getting merged before enabling the A53? Or not 
using the A53 at all?

Best regards

Dirk