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 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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
Powered by JetHome