lkml.org 
[lkml]   [2013]   [Oct]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: perf events ring buffer memory barrier on powerpc
On Mon, Oct 28, 2013 at 10:58:58PM +0200, Victor Kaplansky wrote:
> Oleg Nesterov <oleg@redhat.com> wrote on 10/28/2013 10:17:35 PM:
>
> > mb(); // XXXXXXXX: do we really need it? I think yes.
>
> Oh, it is hard to argue with feelings. Also, it is easy to be on
> conservative side and put the barrier here just in case.
> But I still insist that the barrier is redundant in your example.

If you were to back up that insistence with a description of the orderings
you are relying on, why other orderings are not important, and how the
important orderings are enforced, I might be tempted to pay attention
to your opinion.

Thanx, Paul



\
 
 \ /
  Last update: 2013-10-30 10:41    [W:0.213 / U:0.408 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site