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migration: add "exists" info to load-state-field trace 

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Fiona Ebner <f.ebner@proxmox.com>
Tested-by: Fiona Ebner <f.ebner@proxmox.com>
Signed-off-by: Fabiano Rosas <farosas@suse.de>
This commit is contained in:
Marc-André Lureau 2024-05-16 12:40:20 +04:00 committed by Fabiano Rosas
parent 3dc27fac25
commit 3f879f2f31
2 changed files with 4 additions and 3 deletions
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2
migration/trace-events
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@ -58,7 +58,7 @@ postcopy_page_req_sync(void *host_addr) "sync page req %p"
vmstate_load_field_error(const char *field, int ret) "field \"%s\" load failed, ret = %d"
vmstate_load_state(const char *name, int version_id) "%s v%d"
vmstate_load_state_end(const char *name, const char *reason, int val) "%s %s/%d"
vmstate_load_state_field(const char *name, const char *field) "%s:%s"
vmstate_load_state_field(const char *name, const char *field, bool exists) "%s:%s exists=%d"
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"

5
migration/vmstate.c
View File

@ -128,8 +128,9 @@ int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd,
}
}
while (field->name) {
trace_vmstate_load_state_field(vmsd->name, field->name);
if (vmstate_field_exists(vmsd, field, opaque, version_id)) {
bool exists = vmstate_field_exists(vmsd, field, opaque, version_id);
trace_vmstate_load_state_field(vmsd->name, field->name, exists);
if (exists) {
void *first_elem = opaque + field->offset;
int i, n_elems = vmstate_n_elems(opaque, field);
int size = vmstate_size(opaque, field);