Re: [PATCH] - Fix get_model_name() for mixed cpu type systems

From: KAMEZAWA Hiroyuki <kamezawa.hiroyu_at_jp.fujitsu.com>
Date: 2006-10-20 11:54:06
On Thu, 19 Oct 2006 15:57:20 -0500 (CDT)
Russ Anderson <rja@sgi.com> wrote:

> Attached is a test patch for supporting mixed CPUs.  It changes pmu_conf to
> an array, to keep track of the different CPU characteristics.  At initialization
> information is saved for each of the CPUs.
> 
> Routines have been modified to access the corresponding CPU information.  There
> are likely mistakes accessing the correct CPU, but it is a start.
> 
> It boots on a mixed CPU system.  I can help test.
>
(maybe off topic ?)

While I was testing cpu-hotplug  (2.6.18-git tree), mistakenly I hot-plugged
different-frequency-cpu.
	Booted with : Itanium2 1.6GHz
	Hot-added   : Itanium2 1.5GHz

What happend was ...hrtimer delayed.
timers based on jiffies (ex. select()) worked well but timer based on hrtimer
can't work. For example, sleep(1) sleeps very long..

Mixed-cpu system works well in other environment ?

-Kame

-
To unsubscribe from this list: send the line "unsubscribe linux-ia64" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Received on Fri Oct 20 11:56:58 2006

This archive was generated by hypermail 2.1.8 : 2006-10-20 11:57:13 EST