lkml.org 
[lkml]   [2014]   [Feb]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC][PATCH 0/5] arch: atomic rework
On 02/06/14 18:25, David Howells wrote:
>
> Is it worth considering a move towards using C11 atomics and barriers and
> compiler intrinsics inside the kernel? The compiler _ought_ to be able to do
> these.


It sounds interesting to me, if we can make it work properly and
reliably. + gcc@gcc.gnu.org for others in the GCC community to chip in.

>
> One thing I'm not sure of, though, is how well gcc's atomics will cope with
> interrupt handlers touching atomics on CPUs without suitable atomic
> instructions - that said, userspace does have to deal with signals getting
> underfoot. but then userspace can't normally disable interrupts.
>
> David
>

Ramana



\
 
 \ /
  Last update: 2014-02-06 20:41    [W:0.109 / U:0.024 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site