linux-kernel - Re: [PATCH 0/4] scsi: hisi_sas: Switch to use tasklet over threaded irq handling

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Message-ID: <bfdffd81-d844-4984-a8dd-ffad3e906f96@acm.org>
Date: Tue, 26 Aug 2025 20:18:29 -0700
From: Bart Van Assche <bvanassche@....org>
To: Yihang Li <liyihang9@...artners.com>, martin.petersen@...cle.com,
 James.Bottomley@...senPartnership.com
Cc: linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
 linuxarm@...wei.com, liuyonglong@...wei.com, prime.zeng@...ilicon.com
Subject: Re: [PATCH 0/4] scsi: hisi_sas: Switch to use tasklet over threaded
 irq handling

On 8/26/25 7:11 PM, Yihang Li wrote:
> In the interrupt thread context, the main tasks are handling abnormal I/O
> and calling.task_done()->scsi_done(). I believe these tasks are not
> suitable for execution in the interrupt context.

Most code that can be used in tasklet context is also safe to use in 
interrupt context. Does this patch series complete I/O requests from
tasklet context? Does that mean that it is also possible to complete
I/O requests from interrupt context? Or am I perhaps missing something?

Thanks,

Bart.