[Xen-devel] [PATCH v12 1/7] remus: make postcopy callback asynchronous

[Yang Hongyang <yanghy@xxxxxxxxxxxxxx>]

Make postcopy callback asynchronous.
This is a prepare patch of the following patch series.

Signed-off-by: Yang Hongyang <yanghy@xxxxxxxxxxxxxx>
Acked-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
---
 tools/libxl/libxl_dom.c            | 10 +++++++---
 tools/libxl/libxl_save_msgs_gen.pl |  2 +-
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/tools/libxl/libxl_dom.c b/tools/libxl/libxl_dom.c
index 661999c..c11993d 100644
--- a/tools/libxl/libxl_dom.c
+++ b/tools/libxl/libxl_dom.c
@@ -1451,18 +1451,22 @@ static void 
remus_domain_suspend_callback_common_done(libxl__egc *egc,
     libxl__xc_domain_saverestore_async_callback_done(egc, &dss->shs, ok);
 }
 
-static int libxl__remus_domain_resume_callback(void *data)
+static void libxl__remus_domain_resume_callback(void *data)
 {
+    int ok = 0;
     libxl__save_helper_state *shs = data;
+    libxl__egc *egc = shs->egc;
     libxl__domain_suspend_state *dss = CONTAINER_OF(shs, *dss, shs);
     STATE_AO_GC(dss->ao);
 
     /* Resumes the domain and the device model */
     if (libxl__domain_resume(gc, dss->domid, /* Fast Suspend */1))
-        return 0;
+        goto out;
 
     /* REMUS TODO: Deal with disk. Start a new network output buffer */
-    return 1;
+    ok = 1;
+out:
+    libxl__xc_domain_saverestore_async_callback_done(egc, shs, ok);
 }
 
 /*----- remus asynchronous checkpoint callback -----*/
diff --git a/tools/libxl/libxl_save_msgs_gen.pl 
b/tools/libxl/libxl_save_msgs_gen.pl
index 745e2ac..36bae04 100755
--- a/tools/libxl/libxl_save_msgs_gen.pl
+++ b/tools/libxl/libxl_save_msgs_gen.pl
@@ -24,7 +24,7 @@ our @msgs = (
                                                 'unsigned long', 'done',
                                                 'unsigned long', 'total'] ],
     [  3, 'scxA',   "suspend", [] ],
-    [  4, 'scxW',   "postcopy", [] ],
+    [  4, 'scxA',   "postcopy", [] ],
     [  5, 'scxA',   "checkpoint", [] ],
     [  6, 'scxA',   "switch_qemu_logdirty",  [qw(int domid
                                               unsigned enable)] ],
-- 
1.9.1


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