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| author | Jianjun Duan <duanj@linux.vnet.ibm.com> | 2017-01-19 11:00:51 -0800 |
|---|---|---|
| committer | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2017-01-24 17:54:47 +0000 |
| commit | 94869d5c528bf5df54f37cf5390bc979e6ed46fd (patch) | |
| tree | dd621b855e00c12d8f1e5aef9e2da8fe7a9fa28a /migration/trace-events | |
| parent | 2c21ee769e4674348560480cecc7b20f3750ee84 (diff) | |
| download | qemu-94869d5c528bf5df54f37cf5390bc979e6ed46fd.tar.gz | |
migration: migrate QTAILQ
Currently we cannot directly transfer a QTAILQ instance because of the
limitation in the migration code. Here we introduce an approach to
transfer such structures. We created VMStateInfo vmstate_info_qtailq
for QTAILQ. Similar VMStateInfo can be created for other data structures
such as list.
When a QTAILQ is migrated from source to target, it is appended to the
corresponding QTAILQ structure, which is assumed to have been properly
initialized.
This approach will be used to transfer pending_events and ccs_list in spapr
state.
We also create some macros in qemu/queue.h to access a QTAILQ using pointer
arithmetic. This ensures that we do not depend on the implementation
details about QTAILQ in the migration code.
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Jianjun Duan <duanj@linux.vnet.ibm.com>
Message-Id: <1484852453-12728-3-git-send-email-duanj@linux.vnet.ibm.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Diffstat (limited to 'migration/trace-events')
| -rw-r--r-- | migration/trace-events | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/migration/trace-events b/migration/trace-events index 94134f700b..c46f9e98df 100644 --- a/migration/trace-events +++ b/migration/trace-events @@ -52,6 +52,10 @@ vmstate_n_elems(const char *name, int n_elems) "%s: %d" vmstate_subsection_load(const char *parent) "%s" vmstate_subsection_load_bad(const char *parent, const char *sub, const char *sub2) "%s: %s/%s" vmstate_subsection_load_good(const char *parent) "%s" +get_qtailq(const char *name, int version_id) "%s v%d" +get_qtailq_end(const char *name, const char *reason, int val) "%s %s/%d" +put_qtailq(const char *name, int version_id) "%s v%d" +put_qtailq_end(const char *name, const char *reason) "%s %s" # migration/qemu-file.c qemu_file_fclose(void) "" |