lkml.org 
[lkml]   [2013]   [Sep]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH 2/7] sched: Add NEED_RESCHED to the preempt_count
From
Date
On Wed, 2013-09-11 at 15:34 +0200, Mike Galbraith wrote: 
> On Wed, 2013-09-11 at 13:06 +0200, Peter Zijlstra wrote:

> > Mike does it fix the funny you saw?
>
> Yup, modulo test_need_resched() not existing in master.

...

> while I haven't yet booted Q6600 box, core2
> Toshiba Satellite lappy is using mwait_idle_with_hints() in master.

Heh. Core2 lappy uses mwait_idle_with_hints().. unless you boot
processor.max_cstate=1 so it doesn't use piece of shite hpet. Q6600
always has idle woes, seemingly because box doesn't do deep enough
cstate to make something (acpi?) happy, despite mwait_idle() having
worked fine for years.

Seems I need to find the cstate dependency spot, and rap it upside the
head if I want my core2 boxen to regain happy campers status.

-Mike



\
 
 \ /
  Last update: 2013-09-12 08:21    [W:0.093 / U:0.736 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site