lkml.org 
[lkml]   [2008]   [Sep]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 0/2] x86: fix memory leaks when doing CPU hotplug
On Mon, Aug 11, 2008 at 09:40:15PM +0200, Ingo Molnar wrote:
>
> * Andreas Herrmann <andreas.herrmann3@amd.com> wrote:
>
> > Following patches fix two memory leaks with CPU hotplug. Some per CPU
> > data is allocated each time a CPU is set online. But this space is
> > never freed.
> >
> > Usually this memory leak is not a big deal (for normal CPU hotplug
> > usage). But during stress tests with lots of CPU offline/online cycles
> > this really matters.
> >
> > The entire leak is 40K (10 pages) for each offline/online cycle per
> > CPU. I've verified both fixes performing more than 90000 CPU
> > offline/online cycles.
>
> applied to tip/x86/core, thanks Andreas.
>
> > This is not a regression but I think it's still 2.6.27 material.
> > Please apply.
>
> it's tricky code so i guess it's best to let it cook in tip/master a
> bit. If it does not show up upstream by say -rc4 time could you please
> ping us about it?

Ping!

It's -rc5 time and

b55793f7528ce1b73c25b3ac8a86a6cda2a0f9a4 (x86: cpu_init(): fix memory leak when using CPU hotplug)
49800efcb17afdf973f33e8aa8807b7f83993cc6 (x86: pda_init(): fix memory leak when using CPU hotplug)

are in tip/master but not yet upstream.


Regards,

Andreas




\
 
 \ /
  Last update: 2008-09-02 09:17    [W:0.085 / U:0.168 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site