From: David Vrabel <david.vrabel@citrix.com>
To: Wei Liu <wei.liu2@citrix.com>
Cc: "Keir (Xen.org)" <keir@xen.org>,
Ian Campbell <Ian.Campbell@citrix.com>,
"jbeulich@suse.com" <jbeulich@suse.com>,
"xen-devel@lists.xen.org" <xen-devel@lists.xen.org>
Subject: Re: [RFC PATCH V3 05/22] Change MAX_EVTCHNS macro to max_evtchns inline function
Date: Thu, 28 Feb 2013 11:58:00 +0000 [thread overview]
Message-ID: <512F4648.3020800@citrix.com> (raw)
In-Reply-To: <1361975655-22295-6-git-send-email-wei.liu2@citrix.com>
On 27/02/13 14:33, Wei Liu wrote:
> The calculation of max event channels depends on the actual ABI in use. Try to
> avoid gcc-ism macro.
[...]
> +static inline unsigned int max_evtchns(struct domain *d)
> +{
> + return BITS_PER_EVTCHN_WORD(d) * BITS_PER_EVTCHN_WORD(d);
> +}
This value doesn't change over the life of the domain. Calculate it once
and save it in a new d->max_evtchns field?
David
next prev parent reply other threads:[~2013-02-28 11:58 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-27 14:33 [RFC PATCH V3] Implement 3-level event channel in Xen Wei Liu
2013-02-27 14:33 ` [RFC PATCH V3 01/22] Clean up trailing whitespaces Wei Liu
2013-02-28 11:30 ` David Vrabel
2013-02-28 11:36 ` Wei Liu
2013-02-28 11:38 ` Jan Beulich
2013-02-28 12:14 ` Ian Campbell
2013-02-28 12:29 ` Wei Liu
2013-02-28 13:08 ` Jan Beulich
2013-02-27 14:33 ` [RFC PATCH V3 02/22] Dynamically allocate d->evtchn Wei Liu
2013-02-27 16:35 ` Jan Beulich
2013-02-27 14:33 ` [RFC PATCH V3 03/22] Move event channel macros / struct definition to proper place Wei Liu
2013-02-27 14:33 ` [RFC PATCH V3 04/22] flask: include xen/event.h Wei Liu
2013-02-28 11:20 ` David Vrabel
2013-02-28 11:22 ` Wei Liu
2013-02-27 14:33 ` [RFC PATCH V3 05/22] Change MAX_EVTCHNS macro to max_evtchns inline function Wei Liu
2013-02-28 11:58 ` David Vrabel [this message]
2013-02-28 13:59 ` Wei Liu
2013-02-27 14:33 ` [RFC PATCH V3 06/22] Define extended event channel registration interface Wei Liu
2013-02-27 16:42 ` Jan Beulich
2013-02-28 11:25 ` Wei Liu
2013-02-28 11:32 ` Jan Beulich
2013-02-28 11:41 ` Wei Liu
2013-02-28 12:32 ` David Vrabel
2013-02-28 15:04 ` Wei Liu
2013-02-27 14:34 ` [RFC PATCH V3 07/22] Add evtchn_extended in struct domain Wei Liu
2013-02-28 11:55 ` David Vrabel
2013-02-27 14:34 ` [RFC PATCH V3 08/22] Calculate max event channels for EVTCHN_EXTENDED_L3 Wei Liu
2013-02-27 14:34 ` [RFC PATCH V3 09/22] Bump EVTCHNS_PER_BUCKET to 512 Wei Liu
2013-02-27 14:34 ` [RFC PATCH V3 10/22] Add evtchn_is_{pending, masked} and evtchn_clear_pending Wei Liu
2013-02-27 14:34 ` [RFC PATCH V3 11/22] Update Xen public header Wei Liu
2013-02-28 12:00 ` David Vrabel
2013-02-27 14:34 ` [RFC PATCH V3 12/22] Add supported extended event channel ABI bitmap Wei Liu
2013-02-27 16:47 ` Jan Beulich
2013-02-28 11:21 ` Wei Liu
2013-02-27 14:34 ` [RFC PATCH V3 13/22] Add evtchn_abi_str Wei Liu
2013-02-27 16:51 ` Jan Beulich
2013-02-28 11:28 ` Wei Liu
2013-02-28 11:33 ` Jan Beulich
2013-02-27 14:34 ` [RFC PATCH V3 14/22] Add control structures for 3-level event channel Wei Liu
2013-02-27 14:34 ` [RFC PATCH V3 15/22] Genneralized event channel operations Wei Liu
2013-02-27 14:34 ` [RFC PATCH V3 16/22] Introduce some macros for event channels Wei Liu
2013-02-27 16:53 ` Jan Beulich
2013-02-27 17:04 ` Ian Campbell
2013-02-28 7:54 ` Jan Beulich
2013-02-28 8:35 ` Ian Campbell
2013-02-28 11:17 ` Wei Liu
2013-02-27 14:34 ` [RFC PATCH V3 17/22] Infrastructure to manipulate 3-level event channel pages Wei Liu
2013-02-27 14:34 ` [RFC PATCH V3 18/22] Implement EVTCHNOP_register_extended Wei Liu
2013-02-28 12:33 ` David Vrabel
2013-02-27 14:34 ` [RFC PATCH V3 19/22] Enable exteneded event channel ABI query Wei Liu
2013-02-28 12:36 ` David Vrabel
2013-02-27 14:34 ` [RFC PATCH V3 20/22] Implement 3-level event channel routines Wei Liu
2013-02-27 14:34 ` [RFC PATCH V3 21/22] Only allow extended event channel on Dom0 and driver domains Wei Liu
2013-02-27 16:58 ` Jan Beulich
2013-02-28 11:19 ` Wei Liu
2013-02-28 12:43 ` David Vrabel
2013-02-28 19:29 ` Wei Liu
2013-02-27 14:34 ` [RFC PATCH V3 22/22] libxl: add evtchn_extended flag Wei Liu
2013-02-28 12:48 ` David Vrabel
2013-03-01 11:55 ` Ian Jackson
2013-02-27 16:28 ` [RFC PATCH V3] Implement 3-level event channel in Xen Keir Fraser
2013-02-27 17:01 ` Jan Beulich
2013-02-27 19:49 ` Keir Fraser
2013-02-27 23:19 ` Wei Liu
2013-02-28 5:58 ` Keir Fraser
2013-02-28 7:23 ` Jan Beulich
2013-03-01 12:00 ` Ian Jackson
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