From: Keir Fraser <keir.xen@gmail.com>
To: Jan Beulich <JBeulich@suse.com>
Cc: xen-devel <xen-devel@lists.xen.org>
Subject: Re: ns16550.c's poll_port variable
Date: Fri, 04 May 2012 09:25:38 +0100 [thread overview]
Message-ID: <CBC95112.324B8%keir.xen@gmail.com> (raw)
In-Reply-To: <4FA3ACDB0200007800081847@nat28.tlf.novell.com>
On 04/05/2012 09:18, "Jan Beulich" <JBeulich@suse.com> wrote:
> Hi Keir,
>
> does this really need to be a per-CPU variable? Can't a timer run only
> once at a time on the entire system (the more that it gets re-armed only
> at the end of the poll function, whereas the variable is consumed at the
> start), and hence the variable can be a simple one? Or else, what
> subtlety am I overlooking?
We set up a timer per initialised uart. There can be more than one (although
granted it is rare).
-- Keir
> Thanks, Jan
>
next prev parent reply other threads:[~2012-05-04 8:25 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-04 8:18 ns16550.c's poll_port variable Jan Beulich
2012-05-04 8:25 ` Keir Fraser [this message]
2012-05-04 9:12 ` Jan Beulich
2012-05-04 9:40 ` Keir Fraser
2012-05-04 11:05 ` Jan Beulich
2012-05-04 12:03 ` Keir Fraser
2012-05-04 12:46 ` Jan Beulich
2012-05-04 13:27 ` Keir Fraser
2012-05-04 13:55 ` Jan Beulich
2012-05-04 13:59 ` Keir Fraser
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