[lkml]   [2010]   [Jan]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [RFC][PATCH 6/8] mm: handle_speculative_fault()
On Tue, 5 Jan 2010, Andi Kleen wrote:

> > Oh well. Somebody who is bored might look at trying to make the wrapper
> > code in arch/x86/lib/semaphore_32.S work on x86-64 too. It should make the
> > successful rwsem cases much faster.
> Maybe, maybe not.

What we saw in the past was that the cost of acquiring exclusive
access to the contended cachelines containing mmap_sem and rss counters
was most important.

 \ /
  Last update: 2010-01-05 18:53    [W:0.065 / U:1.696 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site