[lkml]   [2012]   [Feb]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH] ARM: cache-v7: Disable preemption when reading CCSIDR
On Thu, 2 Feb 2012, Russell King - ARM Linux wrote:

> On Thu, Feb 02, 2012 at 11:24:46AM -0800, Stephen Boyd wrote:
> > Should we move get_thread_info into assembler.h? It seems odd
> > to include entry-header.S but I saw that vfp was doing the same.
> Probably yes, and probably also have preempt_disable and preempt_enable
> assembler macros. That's going to get rather icky if we have to
> explicitly call the scheduler though (to solve (1)).

What about a pair of helpers written in C instead?

v7_flush_dcache_all() could be renamed, and a wrapper function called
v7_flush_dcache_all() would call the preemption disable helper, call the
former v7_flush_dcache_all code, then call the preemption enable helper.

Then __v7_setup() could still call the core cache flush code without


 \ /
  Last update: 2012-02-02 22:41    [W:0.055 / U:1.760 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site