From: Michael wang <wangyun@linux.vnet.ibm.com>
To: Alex Shi <alex.shi@linaro.org>, Mike Galbraith <efault@gmx.de>
Cc: mingo@redhat.com, peterz@infradead.org, morten.rasmussen@arm.com,
vincent.guittot@linaro.org, daniel.lezcano@linaro.org,
linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH] sched: select_idle_sibling macro optimize
Date: Fri, 17 Jan 2014 11:15:32 +0800 [thread overview]
Message-ID: <52D8A054.5030203@linux.vnet.ibm.com> (raw)
In-Reply-To: <52D891FB.9020308@linaro.org>
On 01/17/2014 10:14 AM, Alex Shi wrote:
[snip]
>>
>> When is that gonna happen?
>
> I had seen this in a Intel platform, you may have both CPU domain and MC
> domain layer, because the domain flag is different, then they can not be
> merged. and then the CPU domain just has one group.
CPU and MC are different domains, isn't it?
General should like:
CPU cpu0 cpu1
MC core0 core1 core0 core1
SMT cpu 0 cpu 1 cpu 2 cpu 3 cpu 4 cpu 5 cpu 6 cpu 7
So for cpu0:
CPU sg0:cpu0,1,2,3 sg1:cpu4,5,6,7
MC sg0:cpu0,1 sg1:cpu2,3
SMT sg0:cpu0 sg1:cpu1
If one domain only have one group, that's sounds really a weird topology...
Regards,
Michael Wang
>>
>> -Mike
>>
>>
>
>
next prev parent reply other threads:[~2014-01-17 3:15 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-15 14:23 [RFC PATCH] sched: select_idle_sibling macro optimize Alex Shi
2014-01-16 13:13 ` Alex Shi
2014-01-16 13:52 ` Mike Galbraith
2014-01-17 2:14 ` Alex Shi
2014-01-17 3:15 ` Michael wang [this message]
2014-01-17 3:36 ` Mike Galbraith
2014-01-17 5:40 ` Alex Shi
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=52D8A054.5030203@linux.vnet.ibm.com \
--to=wangyun@linux.vnet.ibm.com \
--cc=alex.shi@linaro.org \
--cc=daniel.lezcano@linaro.org \
--cc=efault@gmx.de \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=morten.rasmussen@arm.com \
--cc=peterz@infradead.org \
--cc=vincent.guittot@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.