lkml.org 
[lkml]   [2011]   [Jun]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH 1/3] printk: Release console_sem after logbuf_lock
From
Date
On Thu, 2011-06-09 at 16:57 -0700, Hugh Dickins wrote:
>
> All console-related activity curently happens under spin_lock_irqsave(&console_lock).
> This causes interrutps to be blocked for 1-2 milliseconds with vgacon, and for
> hundreds of milliseconds with fbdevs. This results in network overruns, audio
> dropouts, dropped characters on serial ports and other such nice things.

Hmm, with these proposed patches we're actually back to that. I wonder
if fbdev is still that crappy..


\
 
 \ /
  Last update: 2011-06-10 13:31    [W:0.068 / U:0.276 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site