diff options
| author | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2016-06-14 10:36:26 +0100 |
|---|---|---|
| committer | Amit Shah <amit.shah@redhat.com> | 2016-06-17 18:23:53 +0530 |
| commit | 023ad1a6e9296470d8fd81db3bf0379057fc8994 (patch) | |
| tree | 64923406016a35e0579002162567031908d37dd7 | |
| parent | 4d885131574ba530e48ef90d5c0ca4dffc9c3759 (diff) | |
migration: Trace improvements
A couple of improvements to tracing that have come out of helping
people with migration problems:
* vmstate_n_elems trace the count/name - for when you have problems
getting array counts right
* vmstate_subsection_load_bad - add the idstr, for when you receive a
subsection you weren't expecting.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <1465896986-16132-1-git-send-email-dgilbert@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
| -rw-r--r-- | migration/vmstate.c | 13 | ||||
| -rw-r--r-- | trace-events | 3 |
2 files changed, 9 insertions, 7 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; } } diff --git a/trace-events b/trace-events index 104b64fae1..17e901bdc3 100644 --- a/trace-events +++ b/trace-events @@ -1271,8 +1271,9 @@ vmstate_load_field_error(const char *field, int ret) "field \"%s\" load failed, 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_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) "%s: %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" # qemu-file.c |