From: erik quanstrom <quanstro@quanstro.net>
To: 9fans@9fans.net
Subject: Re: [9fans] 9vx, kproc and *double sleep*
Date: Fri, 11 Jun 2010 10:49:09 -0400 [thread overview]
Message-ID: <f398e344c84e5946e0189ebb69638d57@kw.quanstro.net> (raw)
In-Reply-To: <AANLkTilQUS_JD8CWkcSJt_boJ1tBTG4i_xjZTfYfeyUl@mail.gmail.com>
> schedinit only runs once and sleep runs all the time. That's the part
> I don't get.
gotolabel in sleep sends you back to the
setlabel at the top of schedinit.
> But you might have found something, I sure wish I understood it all better :-)
i'm not entirely convinced that the problem isn't the fact that splhi()
doesn't do anything.
here's what i wonder:
- does richard miller's alternate implementation of wakeup
solve this problem.
- does changing spl* to manipulation of a per-cpu lock solve the problem?
sometimes preventing anything else from running on your mach is
exactly what you want.
in any event, given the long history with sleep/wakeup, changes should
be justified with a promula model. the current model omits the spl*
and the second lock. (http://swtch.com/spin/sleep_wakeup.txt).
- erik
next prev parent reply other threads:[~2010-06-11 14:49 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-11 14:06 Philippe Anel
2010-06-11 14:40 ` ron minnich
2010-06-11 14:49 ` erik quanstrom [this message]
2010-06-11 14:54 ` Philippe Anel
2010-06-11 15:03 ` erik quanstrom
2010-06-11 15:22 ` Philippe Anel
2010-06-11 15:25 ` Philippe Anel
2010-06-11 14:59 ` Philippe Anel
2010-06-11 17:11 ` Bakul Shah
2010-06-11 17:31 ` Philippe Anel
2010-06-11 18:34 ` Bakul Shah
2010-06-11 18:36 ` erik quanstrom
2010-06-11 18:51 ` Philippe Anel
2010-06-12 7:02 ` Philippe Anel
2010-06-12 9:22 ` Philippe Anel
2010-06-12 11:51 ` erik quanstrom
2010-06-13 13:01 ` Richard Miller
2010-06-13 13:43 ` Philippe Anel
2010-06-13 14:26 ` Philippe Anel
2010-06-13 16:20 ` ron minnich
2010-06-13 16:34 ` Philippe Anel
2010-06-13 17:23 ` Philippe Anel
2010-06-13 18:03 ` Philippe Anel
2010-06-14 19:15 ` Charles Forsyth
2010-06-14 19:36 ` Philippe Anel
2010-06-15 2:57 ` ron minnich
2010-06-15 3:36 ` ron minnich
2010-06-12 20:15 ` Richard Miller
2010-06-12 20:30 ` ron minnich
2010-06-12 22:15 ` Charles Forsyth
2010-06-13 0:04 ` ron minnich
2010-06-13 13:32 ` erik quanstrom
2010-06-13 22:34 ` Charles Forsyth
2010-06-13 9:00 ` Richard Miller
2010-06-11 14:49 ` Philippe Anel
2010-06-11 14:59 ` ron minnich
2010-06-11 15:02 ` ron minnich
2010-06-11 15:04 ` erik quanstrom
2010-06-11 15:43 ` ron minnich
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