lkml.org 
[lkml]   [2008]   [Aug]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH 1/3] powerpc - Initialize the irq radix tree earlier
From
Date

> - Remove the populating of the tree from the revmap function as
> you already do
> - Move it to irq_create_mapping() for the normal case
> - For pre-existing interrupt, have the generic code that initializes
> the radix tree walk through all interrupts and setup the revmap for
> them. If that needs locking vs. concurrent irq_create_mapping, it's
> easy to use one of the available spinlocks for that.

And in fact, you may even be able to avoid GFP_ATOMIC completely here
and switch it to GFP_KERNEL since irq_create_mapping() can sleep afaik,
provided that you avoid the spinlocking.

Ben.




\
 
 \ /
  Last update: 2008-08-05 03:11    [W:0.040 / U:0.584 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site