On Mon, Oct 27, 2014 at 09:58:02AM -0400, Tejun Heo wrote:
> From 61e268068c92ed000f078dc1ab71d1228439fecd Mon Sep 17 00:00:00 2001
> From: Tejun Heo <tj@xxxxxxxxxx>
> Date: Mon, 27 Oct 2014 09:50:36 -0400
>
> This reverts commit 18dcf433f3ded61eb140a55e7048ec2fef79e723.
> IRQF_ONESHOT was missing from the conversion causing screaming
> interrupts problems on some setups and LKP detected measureable drop
> in IO performance. It looks like we'll first need to drop the
> threaded IRQ handling first before splitting locking.
Tejun,
Sorry for missing to mention - I think it is better to revert 33fb0d0
("AHCI: Do not acquire ata_host::lock from single IRQ handler") first,
unless you examined it is fine to leave (I did not).
Thanks!
--
Regards,
Alexander Gordeev
agordeev@xxxxxxxxxx
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