lkml.org 
[lkml]   [2000]   [Jul]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] removal of unnecessary irq save/restore in tasklet_hi_schedule


On Wed, 26 Jul 2000, Daniel Marmier wrote:
>
> If my understanding is correct :
> a) tasklet_hi_schedule is to be called by hardirqs
> b) hardirqs cannot be re-entered

No, hard-irq's _can_ be re-entered. One hard-irq cannot re-enter itself,
but you can have _different_ irq's enter each other. As such, to avoid
deadlock in on the local CPU the current code is needed..

Linus


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:57    [W:0.074 / U:0.028 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site