From: David Vrabel <david.vrabel@citrix.com>
Date: Wed, 10 Jun 2015 10:06:02 +0000 (+0200)
Subject: evtchn: profile event channel lock
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~3115
X-Git-Url: https://dgit.raspbian.org/%22http://www.example.com/cgi/%22/%22http:/www.example.com/cgi/%22?a=commitdiff_plain;h=a3046cf809529f4fdd03850e084a94fa72cf78e9;p=xen.git

evtchn: profile event channel lock

The per-domain event channel lock may suffer from contention.  Add it to
the set of locks to be profiled when lock profiling is enabled.

Signed-off-by: David Vrabel <david.vrabel@citrix.com>
---

diff --git a/xen/common/event_channel.c b/xen/common/event_channel.c
index fae242daff..bf9b2f8ecd 100644
--- a/xen/common/event_channel.c
+++ b/xen/common/event_channel.c
@@ -1251,7 +1251,7 @@ int evtchn_init(struct domain *d)
     if ( !d->evtchn )
         return -ENOMEM;
 
-    spin_lock_init(&d->event_lock);
+    spin_lock_init_prof(d, event_lock);
     if ( get_free_port(d) != 0 )
     {
         free_evtchn_bucket(d, d->evtchn);