lkml.org 
[lkml]   [2021]   [Feb]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH for-next 00/32] spin lock usage optimization for SCSI drivers
On Sun, 7 Feb 2021, Xiaofei Tan wrote:

> Replace spin_lock_irqsave with spin_lock in hard IRQ of SCSI drivers.
> There are no function changes, but may speed up if interrupt happen too
> often.

This change doesn't necessarily work on platforms that support nested
interrupts.

Were you able to measure any benefit from this change on some other
platform?

Please see also,
https://lore.kernel.org/linux-scsi/89c5cb05cb844939ae684db0077f675f@h3c.com/

\
 
 \ /
  Last update: 2021-02-08 08:59    [W:3.174 / U:0.008 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site