From: David Vrabel <david.vrabel@citrix.com>
To: xen-devel@lists.xen.org
Cc: Wei Liu <wei.liu2@citrix.com>, Keir Fraser <keir@xen.org>,
David Vrabel <david.vrabel@citrix.com>
Subject: [PATCH 4/8] evtchn: use a per-domain variable for the max number of event channels
Date: Fri, 9 Aug 2013 19:08:36 +0100 [thread overview]
Message-ID: <1376071720-17644-5-git-send-email-david.vrabel@citrix.com> (raw)
In-Reply-To: <1376071720-17644-1-git-send-email-david.vrabel@citrix.com>
From: David Vrabel <david.vrabel@citrix.com>
Instead of the MAX_EVTCHNS(d) macro, use d->max_evtchns instead. This
avoids having to repeatedly check the ABI type.
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
---
xen/common/event_2l.c | 1 +
xen/common/event_channel.c | 4 ++--
xen/common/schedule.c | 2 +-
xen/include/xen/event.h | 2 +-
xen/include/xen/sched.h | 1 +
5 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/xen/common/event_2l.c b/xen/common/event_2l.c
index 18c0c6e..0f6606e 100644
--- a/xen/common/event_2l.c
+++ b/xen/common/event_2l.c
@@ -86,6 +86,7 @@ static const struct evtchn_port_ops evtchn_port_ops_2l =
void evtchn_2l_init(struct domain *d)
{
d->evtchn_port_ops = &evtchn_port_ops_2l;
+ d->max_evtchns = BITS_PER_EVTCHN_WORD(d) * BITS_PER_EVTCHN_WORD(d);
}
/*
diff --git a/xen/common/event_channel.c b/xen/common/event_channel.c
index d0fbe82..1a1636e 100644
--- a/xen/common/event_channel.c
+++ b/xen/common/event_channel.c
@@ -134,7 +134,7 @@ static int get_free_port(struct domain *d)
if ( evtchn_from_port(d, port)->state == ECS_FREE )
return port;
- if ( port == MAX_EVTCHNS(d) )
+ if ( port == d->max_evtchns )
return -ENOSPC;
chn = xzalloc_array(struct evtchn, EVTCHNS_PER_BUCKET);
@@ -1247,7 +1247,7 @@ static void domain_dump_evtchn_info(struct domain *d)
spin_lock(&d->event_lock);
- for ( port = 1; port < MAX_EVTCHNS(d); ++port )
+ for ( port = 1; port < d->max_evtchns; ++port )
{
const struct evtchn *chn;
char *ssid;
diff --git a/xen/common/schedule.c b/xen/common/schedule.c
index 7e6884d..a5a0010 100644
--- a/xen/common/schedule.c
+++ b/xen/common/schedule.c
@@ -748,7 +748,7 @@ static long do_poll(struct sched_poll *sched_poll)
goto out;
rc = -EINVAL;
- if ( port >= MAX_EVTCHNS(d) )
+ if ( port >= d->max_evtchns )
goto out;
rc = 0;
diff --git a/xen/include/xen/event.h b/xen/include/xen/event.h
index 05d8091..a49697c 100644
--- a/xen/include/xen/event.h
+++ b/xen/include/xen/event.h
@@ -73,7 +73,7 @@ void notify_via_xen_event_channel(struct domain *ld, int lport);
#define bucket_from_port(d,p) \
((d)->evtchn[(p)/EVTCHNS_PER_BUCKET])
#define port_is_valid(d,p) \
- (((p) >= 0) && ((p) < MAX_EVTCHNS(d)) && \
+ (((p) >= 0) && ((p) < d->max_evtchns) && \
(bucket_from_port(d,p) != NULL))
#define evtchn_from_port(d,p) \
(&(bucket_from_port(d,p))[(p)&(EVTCHNS_PER_BUCKET-1)])
diff --git a/xen/include/xen/sched.h b/xen/include/xen/sched.h
index 9e42220..0ca984d 100644
--- a/xen/include/xen/sched.h
+++ b/xen/include/xen/sched.h
@@ -273,6 +273,7 @@ struct domain
/* Event channel information. */
struct evtchn *evtchn[NR_EVTCHN_BUCKETS];
+ unsigned max_evtchns;
spinlock_t event_lock;
const struct evtchn_port_ops *evtchn_port_ops;
--
1.7.2.5
next prev parent reply other threads:[~2013-08-09 18:08 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-09 18:08 [RFC PATCH 0/8] Xen: FIFO-based event channel ABI David Vrabel
2013-08-09 18:08 ` [PATCH 1/8] debug: remove some event channel info from the 'i' and 'q' debug keys David Vrabel
2013-08-15 13:55 ` Jan Beulich
2013-08-09 18:08 ` [PATCH 2/8] evtchn: refactor low-level event channel port ops David Vrabel
2013-08-15 14:05 ` Jan Beulich
2013-09-06 14:25 ` David Vrabel
2013-09-06 14:55 ` Jan Beulich
2013-08-09 18:08 ` [PATCH 3/8] evtchn: add a hook to bind an event port to a VCPU David Vrabel
2013-08-09 18:08 ` David Vrabel [this message]
2013-08-15 14:09 ` [PATCH 4/8] evtchn: use a per-domain variable for the max number of event channels Jan Beulich
2013-08-09 18:08 ` [PATCH 5/8] evtchn: dynamically allocate d->evtchn David Vrabel
2013-08-15 14:10 ` Jan Beulich
2013-08-09 18:08 ` [PATCH 6/8] evtchn: alter internal object handling scheme David Vrabel
2013-08-15 14:21 ` Jan Beulich
2013-08-15 15:46 ` David Vrabel
2013-08-16 7:14 ` Jan Beulich
2013-08-16 16:55 ` Wei Liu
2013-08-09 18:08 ` [PATCH 7/8] evtchn: add FIFO-based event channel ABI David Vrabel
2013-08-15 14:25 ` Jan Beulich
2013-08-09 18:08 ` [PATCH 8/8] evtchn: add FIFO-based event channel hypercalls and port ops David Vrabel
2013-08-16 16:33 ` Wei Liu
2013-08-19 10:32 ` David Vrabel
2013-08-19 10:46 ` Wei Liu
2013-08-23 10:33 ` Jan Beulich
2013-08-23 11:00 ` David Vrabel
2013-08-12 13:06 ` [RFC PATCH 0/8] Xen: FIFO-based event channel ABI George Dunlap
2013-08-12 13:49 ` David Vrabel
2013-08-16 16:55 ` Wei Liu
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