lkml.org 
[lkml]   [2011]   [Feb]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH V5 2/2] tracing, perf : add cpu hotplug trace events
> Anybody who is interested in the latency of cpu hotplug is deluding
> himself, also cpu hotplug is _NOT_ a power management feature, so the
> rest of your justification just disappeared as well.

Actually CPU hotplug is a power management feature on some devices where
you need to shutdown one of the cores to enter low power modes.
Remember we use it as part of the suspend paths and various processors
nowdays drop into a suspend to RAM type state on CPU idling.

Alan


\
 
 \ /
  Last update: 2011-02-24 21:11    [W:0.143 / U:0.384 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site