Re: [PATCH] MIPS: Loongson64: Switch to SYNC_R4K

[Jiaxun Yang]

在2024年7月14日七月 上午11:00，Jiaxun Yang写道：
> 在2024年7月14日七月 上午10:54，Huacai Chen写道：
>> On Sun, Jul 14, 2024 at 10:41 AM Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx> wrote:
>>>
>>> Nowadays SYNC_R4K is performing better than Loongson64's
>>> custom sync mechanism.
>> Loongson64's preciseness is significantly better than SYNC_R4K.
>
> My updated implementation[1] uses a multi-pass regression methodology
> which can compensite communication overhead. I had measured delta
> with EJTAG DINT on Loongson-2K and it can be reduced to as low as 4
> cycles while ASK_C0_COUNT has ~50 cycles delta.
>
> [1]: 
> https://lore.kernel.org/linux-mips/20240511-mips-clks-v1-0-ddb4a10ee9f9@xxxxxxxxxxx/

This is currently in mips-next.

>
> Thanks
> - Jiaxun
>
>>
>> Huacai
>
>
> -- 
> - Jiaxun

-- 
- Jiaxun