lkml.org 
[lkml]   [2000]   [Mar]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: new IRQ scalability changes in 2.3.48


On Wed, 8 Mar 2000 yodaiken@fsmlabs.com wrote:
> On a UP -- no change except code is more complex
> On a SMP box performance loss without using affinity.
> Take two spinlocks instead of one, more cache boucing etc.

You've said that now several times, and you always ignore the answer that
you are always given: normally you don't need any other spinlock if your
interrupt controller can do the operations atomically. Which they actually
usually can, at least the better ones.

Ignoring that answer only makes you look silly. Don't do it.

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 13:56    [W:0.154 / U:0.132 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site