Subject: Re: [linuxppc-release] [PATCH v3 4/4] fsl-dma: use spin_lock_bh to instead of spin_lock_irqsave

From: Tabi Timur-B04825 <[email-masked]>
Date: Mon, 16 Jul 2012 14:25:18 +0000

Qiang Liu wrote:
> Use spin_lock_bh to instead of spin_lock_irqsave for improving performanc=
e.

You forgot to include the evidence that performance has improved, as well=20
as an explanation why it's okay to use spin_lock_bh, and why it's faster.=20
  I told you to respin the patch with that information in the patch=20
description.

--=20
Timur Tabi
Linux kernel developer at Freescale