From: Lin Feng <linfeng@cn.fujitsu.com>
To: Lenky Gao <lenky.gao@gmail.com>
Cc: linux-kernel@vger.kernel.org, yinghai@kernel.org, mingo@elte.hu,
gorcunov@gmail.com, rusty@rustcorp.com.au, sivanich@sgi.com,
agordeev@redhat.com
Subject: Re: Question: How to distribute the interrupts over multiple cores?
Date: Mon, 25 Mar 2013 17:41:10 +0800 [thread overview]
Message-ID: <51501BB6.5000306@cn.fujitsu.com> (raw)
In-Reply-To: <CAAO_Xo7CTzow1TN+4bmmHH9KB4NSLRv5ZsOmwEC2KGTxDc-1Ug@mail.gmail.com>
Hi,
On 03/25/2013 05:00 PM, Lenky Gao wrote:
> I have found a comment in function physflat_cpu_mask_to_apicid to explain why.
>
> static unsigned int physflat_cpu_mask_to_apicid(const struct cpumask *cpumask)
> {
> int cpu;
>
> /*
> * We're using fixed IRQ delivery, can only return one phys APIC ID.
> * May as well be the first.
> */
> ...
>
> This is mean i can not distribute the interrupts over multiple cores
> when the machine have more than 8 cores?
>
>
Sorry I can't find physflat_cpu_mask_to_apicid() in latest Linux tree, seems it has
been removed out.. But just consider what you said that it's limited by "8 cores"
IMHO it's impossible or it is a bug.
thanks,
linfeng
next prev parent reply other threads:[~2013-03-25 9:39 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-25 2:33 Question: How to distribute the interrupts over multiple cores? Lenky Gao
2013-03-25 2:58 ` Lin Feng
2013-03-25 3:18 ` Lenky Gao
2013-03-25 3:24 ` Lin Feng
2013-03-25 3:44 ` Lenky Gao
2013-03-25 5:19 ` Lin Feng
2013-03-25 6:46 ` Lenky Gao
2013-03-25 7:04 ` Lin Feng
2013-03-25 7:10 ` Lenky Gao
2013-03-25 9:00 ` Lenky Gao
2013-03-25 9:41 ` Lin Feng [this message]
2013-03-25 9:45 ` Lenky Gao
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=51501BB6.5000306@cn.fujitsu.com \
--to=linfeng@cn.fujitsu.com \
--cc=agordeev@redhat.com \
--cc=gorcunov@gmail.com \
--cc=lenky.gao@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=rusty@rustcorp.com.au \
--cc=sivanich@sgi.com \
--cc=yinghai@kernel.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.