lkml.org 
[lkml]   [2013]   [Jun]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v2 15/45] rcu: Use get/put_online_cpus_atomic() to prevent CPU offline
On Wed, Jun 26, 2013 at 10:51:11AM -0400, Steven Rostedt wrote:
> > It would also increase the latency of CPU-hotunplug operations.
>
> Is that a big deal?

I thought that was the whole deal with this patchset - making cpu
hotunplugs lighter and faster mostly for powersaving. That said, just
removing stop_machine call would be a pretty good deal and I don't
know how meaningful reducing CPU hotunplug latency is. Srivatsa?

Thanks.

--
tejun


\
 
 \ /
  Last update: 2013-06-26 18:41    [W:0.228 / U:0.700 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site