From: "Jiaxun Yang" <jiaxun.yang@flygoat.com>
To: "Huacai Chen" <chenhuacai@kernel.org>
Cc: "Thomas Bogendoerfer" <tsbogend@alpha.franken.de>,
"linux-mips@vger.kernel.org" <linux-mips@vger.kernel.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] MIPS: Loongson64: Switch to SYNC_R4K
Date: Sun, 14 Jul 2024 11:02:55 +0800 [thread overview]
Message-ID: <87209180-c09f-4536-b515-82e0ff260644@app.fastmail.com> (raw)
In-Reply-To: <8223b782-5325-4628-b688-293b7f16c931@app.fastmail.com>
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@flygoat.com> 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@flygoat.com/
This is currently in mips-next.
>
> Thanks
> - Jiaxun
>
>>
>> Huacai
>
>
> --
> - Jiaxun
--
- Jiaxun
next prev parent reply other threads:[~2024-07-14 3:03 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-14 2:41 Jiaxun Yang
2024-07-14 2:54 ` Huacai Chen
2024-07-14 3:00 ` Jiaxun Yang
2024-07-14 3:02 ` Jiaxun Yang [this message]
2024-07-18 7:34 ` Jiaxun Yang
2024-07-18 17:28 ` Thomas Bogendoerfer
2024-07-23 2:53 ` Huacai Chen
2024-07-23 7:32 ` Thomas Bogendoerfer
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