[Xen-changelog] [xen-4.0-testing] Clean up event-channel debug-key output, and use spin_lock().

["Xen patchbot-4.0-testing" <patchbot-4.0-testing@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1281686418 -3600
# Node ID 4c180d7650f4c345aeb17d31bccdefbcd1531603
# Parent  12f1350d4a06e108d4c3807b48d6534599f5f469
Clean up event-channel debug-key output, and use spin_lock().

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>
xen-unstable changeset:   7d02b1046d14
xen-unstable date:        Fri Aug 13 08:39:11 2010 +0100
---
 xen/common/event_channel.c |   11 ++++-------
 1 files changed, 4 insertions(+), 7 deletions(-)

diff -r 12f1350d4a06 -r 4c180d7650f4 xen/common/event_channel.c
--- a/xen/common/event_channel.c        Fri Aug 13 08:59:52 2010 +0100
+++ b/xen/common/event_channel.c        Fri Aug 13 09:00:18 2010 +0100
@@ -1070,14 +1070,11 @@ static void domain_dump_evtchn_info(stru
 
     bitmap_scnlistprintf(keyhandler_scratch, sizeof(keyhandler_scratch),
                          d->poll_mask, d->max_vcpus);
-    printk("Domain %d polling vCPUs: {%s}\n",
-           d->domain_id, keyhandler_scratch);
-
-    if ( !spin_trylock(&d->event_lock) )
-        return;
-
     printk("Event channel information for domain %d:\n"
-           "    port [p/m]\n", d->domain_id);
+           "Polling vCPUs: {%s}\n"
+           "    port [p/m]\n", d->domain_id, keyhandler_scratch);
+
+    spin_lock(&d->event_lock);
 
     for ( port = 1; port < MAX_EVTCHNS(d); ++port )
     {

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