From: Avi Kivity <avi@redhat.com>
To: Mike Galbraith <mgalbraith@suse.de>
Cc: Rik van Riel <riel@redhat.com>,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Chris Wright <chrisw@sous-sol.org>
Subject: Re: [RFC -v2 PATCH 2/3] sched: add yield_to function
Date: Sat, 18 Dec 2010 19:08:15 +0200 [thread overview]
Message-ID: <4D0CEA7F.9080603@redhat.com> (raw)
In-Reply-To: <1292570143.7772.84.camel@marge.simson.net>
On 12/17/2010 09:15 AM, Mike Galbraith wrote:
> BTW, with this vruntime donation thingy, what prevents a task from
> forking off accomplices who do nothing but wait for a wakeup and
> yield_to(exploit)?
>
What's the difference between that and forking off accomplices who
run(exploit) directly?
Many threads dominating the scheduler has been solved by group
scheduling. We need to make sure directed yield doesn't violate that,
but I don't see new problems.
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
next prev parent reply other threads:[~2010-12-18 17:08 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-14 3:44 [RFC -v2 PATCH 0/3] directed yield for Pause Loop Exiting Rik van Riel
2010-12-14 3:45 ` [RFC -v2 PATCH 1/3] kvm: keep track of which task is running a KVM vcpu Rik van Riel
2010-12-14 3:46 ` [RFC -v2 PATCH 2/3] sched: add yield_to function Rik van Riel
2010-12-14 6:08 ` Mike Galbraith
2010-12-14 10:24 ` Srivatsa Vaddagiri
2010-12-14 11:03 ` Mike Galbraith
2010-12-14 11:26 ` Srivatsa Vaddagiri
2010-12-14 12:47 ` Mike Galbraith
2010-12-16 19:49 ` Rik van Riel
2010-12-17 6:56 ` Mike Galbraith
2010-12-17 7:15 ` Mike Galbraith
2010-12-18 17:08 ` Avi Kivity [this message]
2010-12-18 19:13 ` Mike Galbraith
2010-12-19 6:08 ` Avi Kivity
2010-12-20 15:40 ` Rik van Riel
2010-12-20 16:04 ` Mike Galbraith
2010-12-28 5:54 ` Mike Galbraith
2010-12-28 6:08 ` Gene Heskett
2010-12-28 6:16 ` Mike Galbraith
2010-12-28 16:18 ` Gene Heskett
2010-12-28 22:34 ` Rik van Riel
2010-12-17 15:09 ` Avi Kivity
2010-12-17 19:51 ` Mike Galbraith
2010-12-18 17:02 ` Avi Kivity
2010-12-18 19:06 ` Mike Galbraith
2010-12-19 6:21 ` Avi Kivity
2010-12-19 10:05 ` Mike Galbraith
2010-12-19 9:19 ` Avi Kivity
2010-12-19 11:18 ` Mike Galbraith
2010-12-20 8:39 ` Mike Galbraith
2010-12-20 8:45 ` Avi Kivity
2010-12-20 8:55 ` Mike Galbraith
2010-12-20 9:03 ` Avi Kivity
2010-12-20 9:30 ` Mike Galbraith
2010-12-20 9:46 ` Avi Kivity
2010-12-20 10:33 ` Mike Galbraith
2010-12-20 10:39 ` Avi Kivity
2010-12-20 10:46 ` Mike Galbraith
2010-12-20 10:49 ` Avi Kivity
2010-12-20 10:50 ` Mike Galbraith
2010-12-20 11:06 ` Avi Kivity
2010-12-14 12:22 ` Peter Zijlstra
2010-12-18 14:50 ` Rik van Riel
2010-12-14 3:48 ` [RFC -v2 PATCH 3/3] kvm: use yield_to instead of sleep in kvm_vcpu_on_spin Rik van Riel
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=4D0CEA7F.9080603@redhat.com \
--to=avi@redhat.com \
--cc=a.p.zijlstra@chello.nl \
--cc=chrisw@sous-sol.org \
--cc=kvm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mgalbraith@suse.de \
--cc=riel@redhat.com \
--cc=vatsa@linux.vnet.ibm.com \
/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