Merge remote-tracking branch 'remotes/amit-migration/tags/migration-for-2.7-5' into staging

Migration:

 - many compression/decompression fixes
 - trace improvements
 - static checker fix for detecting size mismatch in unused fields
 - fix VM save after snapshot

# gpg: Signature made Fri 17 Jun 2016 13:59:44 BST
# gpg:                using RSA key 0xEB0B4DFC657EF670
# gpg: Good signature from "Amit Shah <amit@amitshah.net>"
# gpg:                 aka "Amit Shah <amit@kernel.org>"
# gpg:                 aka "Amit Shah <amitshah@gmx.net>"
# Primary key fingerprint: 48CA 3722 5FE7 F4A8 B337  2735 1E9A 3B5F 8540 83B6
#      Subkey fingerprint: CC63 D332 AB8F 4617 4529  6534 EB0B 4DFC 657E F670

* remotes/amit-migration/tags/migration-for-2.7-5:
  vmstate-static-checker: fix size mismatch detection in unused fields
  migration: code clean up
  migration: refine the decompression code
  migration: refine the compression code
  migration: protect the quit flag by lock
  migration: refine ram_save_compressed_page
  qemu-file: Fix qemu_put_compression_data flaw
  migration: remove useless code
  migration: Fix a potential issue
  migration: Fix multi-thread compression bug
  migration: fix inability to save VM after snapshot
  migration: Trace improvements
  migration: Don't use *_to_cpup() and cpu_to_*w()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 7 insertions, 6 deletions

diff --git a/migration/vmstate.c b/migration/vmstate.c
index 46dc55ea40..fc29acf74d 100644
--- a/migration/vmstate.c
+++ b/migration/vmstate.c
@@ -32,6 +32,7 @@ static int vmstate_n_elems(void *opaque, VMStateField *field)
         n_elems *= field->num;
     }
 
+    trace_vmstate_n_elems(field->name, n_elems);
     return n_elems;
 }
 
@@ -381,25 +382,25 @@ static int vmstate_subsection_load(QEMUFile *f, const VMStateDescription *vmsd,
         len = qemu_peek_byte(f, 1);
         if (len < strlen(vmsd->name) + 1) {
             /* subsection name has be be "section_name/a" */
-            trace_vmstate_subsection_load_bad(vmsd->name, "(short)");
+            trace_vmstate_subsection_load_bad(vmsd->name, "(short)", "");
             return 0;
         }
         size = qemu_peek_buffer(f, (uint8_t **)&idstr_ret, len, 2);
         if (size != len) {
-            trace_vmstate_subsection_load_bad(vmsd->name, "(peek fail)");
+            trace_vmstate_subsection_load_bad(vmsd->name, "(peek fail)", "");
             return 0;
         }
         memcpy(idstr, idstr_ret, size);
         idstr[size] = 0;
 
         if (strncmp(vmsd->name, idstr, strlen(vmsd->name)) != 0) {
-            trace_vmstate_subsection_load_bad(vmsd->name, idstr);
-            /* it don't have a valid subsection name */
+            trace_vmstate_subsection_load_bad(vmsd->name, idstr, "(prefix)");
+            /* it doesn't have a valid subsection name */
             return 0;
         }
         sub_vmsd = vmstate_get_subsection(vmsd->subsections, idstr);
         if (sub_vmsd == NULL) {
-            trace_vmstate_subsection_load_bad(vmsd->name, "(lookup)");
+            trace_vmstate_subsection_load_bad(vmsd->name, idstr, "(lookup)");
             return -ENOENT;
         }
         qemu_file_skip(f, 1); /* subsection */
@@ -409,7 +410,7 @@ static int vmstate_subsection_load(QEMUFile *f, const VMStateDescription *vmsd,
 
         ret = vmstate_load_state(f, sub_vmsd, opaque, version_id);
         if (ret) {
-            trace_vmstate_subsection_load_bad(vmsd->name, "(child)");
+            trace_vmstate_subsection_load_bad(vmsd->name, idstr, "(child)");
             return ret;
         }
     }