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[Xen-devel] [PATCH 04/12] xenpaging: print page-in/page-out progress

To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] [PATCH 04/12] xenpaging: print page-in/page-out progress
From: Olaf Hering <olaf@xxxxxxxxx>
Date: Mon, 10 Jan 2011 17:43:49 +0100
Delivery-date: Mon, 10 Jan 2011 08:47:16 -0800
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Now that DPRINTF is triggered only when the environment variable
XENPAGING_DEBUG is found, make such a debug session actually useful by
printing the entire page-out/page-in process. The 'Got event from Xen'
message alone is not helpful.

Signed-off-by: Olaf Hering <olaf@xxxxxxxxx>

 tools/xenpaging/xenpaging.c |    2 ++
 1 file changed, 2 insertions(+)

--- xen-unstable.hg-4.1.22571.orig/tools/xenpaging/xenpaging.c
+++ xen-unstable.hg-4.1.22571/tools/xenpaging/xenpaging.c
@@ -387,6 +387,7 @@ int xenpaging_evict_page(xenpaging_t *pa
         goto out;
+    DPRINTF("evict_page > gfn %lx pageslot %d\n", victim->gfn, i);
     /* Notify policy of page being paged out */
@@ -427,6 +428,7 @@ static int xenpaging_populate_page(xenpa
     unsigned char oom = 0;
     _gfn = *gfn;
+    DPRINTF("populate_page < gfn %lx pageslot %d\n", _gfn, i);
         /* Tell Xen to allocate a page for the domain */

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