From: Andi Kleen <andi@firstfloor.org>
To: "Robert P. J. Day" <rpjday@crashcourse.ca>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: backwards busy wait using "time_before()"??
Date: Fri, 01 Jan 2010 16:17:07 +0100 [thread overview]
Message-ID: <87tyv57t3g.fsf@basil.nowhere.org> (raw)
In-Reply-To: <alpine.LFD.2.00.0912311136560.3596@localhost> (Robert P. J. Day's message of "Thu, 31 Dec 2009 11:40:42 -0500 (EST)")
"Robert P. J. Day" <rpjday@crashcourse.ca> writes:
> cpu_relax(); \
> } while (time_before(end_jiffies, jiffies)); \
> succeeded; \
> })
>
>
> is it just me, or do those arguments to time_before() look
> backwards?
Yes it looks backwards. The timeout path probably has been never
tested.
-Andi
--
ak@linux.intel.com -- Speaking for myself only.
prev parent reply other threads:[~2010-01-01 15:17 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-31 16:40 backwards busy wait using "time_before()"?? Robert P. J. Day
2009-12-31 19:23 ` Robert P. J. Day
2010-01-01 15:17 ` Andi Kleen [this message]
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=87tyv57t3g.fsf@basil.nowhere.org \
--to=andi@firstfloor.org \
--cc=linux-kernel@vger.kernel.org \
--cc=rpjday@crashcourse.ca \
/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.