linux-kernel - Re: [PATCH v1 0/2] svc-i3c-master: Reduce IBI transaction time

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Message-ID: <87ikn5ygfd.fsf@bootlin.com>
Date: Tue, 15 Apr 2025 10:31:18 +0200
From: Miquel Raynal <miquel.raynal@...tlin.com>
To: Stanley Chu <stanley.chuys@...il.com>
Cc: frank.li@....com,  alexandre.belloni@...tlin.com,
  linux-i3c@...ts.infradead.org,  linux-kernel@...r.kernel.org,
  tomer.maimon@...oton.com,  kwliu@...oton.com,  yschu@...oton.com
Subject: Re: [PATCH v1 0/2] svc-i3c-master: Reduce IBI transaction time

On 15/04/2025 at 13:18:06 +08, Stanley Chu <stanley.chuys@...il.com> wrote:

> This patchset reduces the IBI transaction time by the following
> improvements.
> 1. Receive the request in interrupt context.

I initially had a few concerns about that, especially since the wait
periods were bounded to 1s, but actually we are already in the irqsave
situation when running this code, so your series might not have
such a huge system-wide performance impact in the end.

> 2. Emit the STOP as soon as possible.

Acked-by: Miquel Raynal <miquel.raynal@...tlin.com>

Thanks,
Miquèl