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[PATCH V1 03/26] migration: SAVEVM_FOREACH
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From: |
Steve Sistare |
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Subject: |
[PATCH V1 03/26] migration: SAVEVM_FOREACH |
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Date: |
Mon, 29 Apr 2024 08:55:12 -0700 |
Define an abstraction SAVEVM_FOREACH to loop over all savevm state
handlers, and replace QTAILQ_FOREACH. Define variants for ALL so
we can loop over all handlers vs a subset of handlers in a subsequent
patch, but at this time there is no distinction between the two.
No functional change.
Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
---
migration/savevm.c | 55 +++++++++++++++++++++++++++++++-----------------------
1 file changed, 32 insertions(+), 23 deletions(-)
diff --git a/migration/savevm.c b/migration/savevm.c
index 4509482..6829ba3 100644
--- a/migration/savevm.c
+++ b/migration/savevm.c
@@ -237,6 +237,15 @@ static SaveState savevm_state = {
.global_section_id = 0,
};
+#define SAVEVM_FOREACH(se, entry) \
+ QTAILQ_FOREACH(se, &savevm_state.handlers, entry) \
+
+#define SAVEVM_FOREACH_ALL(se, entry) \
+ QTAILQ_FOREACH(se, &savevm_state.handlers, entry)
+
+#define SAVEVM_FOREACH_SAFE_ALL(se, entry, new_se) \
+ QTAILQ_FOREACH_SAFE(se, &savevm_state.handlers, entry, new_se)
+
static SaveStateEntry *find_se(const char *idstr, uint32_t instance_id);
static bool should_validate_capability(int capability)
@@ -674,7 +683,7 @@ static uint32_t calculate_new_instance_id(const char *idstr)
SaveStateEntry *se;
uint32_t instance_id = 0;
- QTAILQ_FOREACH(se, &savevm_state.handlers, entry) {
+ SAVEVM_FOREACH_ALL(se, entry) {
if (strcmp(idstr, se->idstr) == 0
&& instance_id <= se->instance_id) {
instance_id = se->instance_id + 1;
@@ -690,7 +699,7 @@ static int calculate_compat_instance_id(const char *idstr)
SaveStateEntry *se;
int instance_id = 0;
- QTAILQ_FOREACH(se, &savevm_state.handlers, entry) {
+ SAVEVM_FOREACH(se, entry) {
if (!se->compat) {
continue;
}
@@ -816,7 +825,7 @@ void unregister_savevm(VMStateIf *obj, const char *idstr,
void *opaque)
}
pstrcat(id, sizeof(id), idstr);
- QTAILQ_FOREACH_SAFE(se, &savevm_state.handlers, entry, new_se) {
+ SAVEVM_FOREACH_SAFE_ALL(se, entry, new_se) {
if (strcmp(se->idstr, id) == 0 && se->opaque == opaque) {
savevm_state_handler_remove(se);
g_free(se->compat);
@@ -939,7 +948,7 @@ void vmstate_unregister(VMStateIf *obj, const
VMStateDescription *vmsd,
{
SaveStateEntry *se, *new_se;
- QTAILQ_FOREACH_SAFE(se, &savevm_state.handlers, entry, new_se) {
+ SAVEVM_FOREACH_SAFE_ALL(se, entry, new_se) {
if (se->vmsd == vmsd && se->opaque == opaque) {
savevm_state_handler_remove(se);
g_free(se->compat);
@@ -1223,7 +1232,7 @@ bool qemu_savevm_state_blocked(Error **errp)
{
SaveStateEntry *se;
- QTAILQ_FOREACH(se, &savevm_state.handlers, entry) {
+ SAVEVM_FOREACH(se, entry) {
if (se->vmsd && se->vmsd->unmigratable) {
error_setg(errp, "State blocked by non-migratable device '%s'",
se->idstr);
@@ -1237,7 +1246,7 @@ void qemu_savevm_non_migratable_list(strList **reasons)
{
SaveStateEntry *se;
- QTAILQ_FOREACH(se, &savevm_state.handlers, entry) {
+ SAVEVM_FOREACH(se, entry) {
if (se->vmsd && se->vmsd->unmigratable) {
QAPI_LIST_PREPEND(*reasons,
g_strdup_printf("non-migratable device: %s",
@@ -1276,7 +1285,7 @@ bool qemu_savevm_state_guest_unplug_pending(void)
{
SaveStateEntry *se;
- QTAILQ_FOREACH(se, &savevm_state.handlers, entry) {
+ SAVEVM_FOREACH(se, entry) {
if (se->vmsd && se->vmsd->dev_unplug_pending &&
se->vmsd->dev_unplug_pending(se->opaque)) {
return true;
@@ -1291,7 +1300,7 @@ int qemu_savevm_state_prepare(Error **errp)
SaveStateEntry *se;
int ret;
- QTAILQ_FOREACH(se, &savevm_state.handlers, entry) {
+ SAVEVM_FOREACH(se, entry) {
if (!se->ops || !se->ops->save_prepare) {
continue;
}
@@ -1321,7 +1330,7 @@ int qemu_savevm_state_setup(QEMUFile *f, Error **errp)
json_writer_start_array(ms->vmdesc, "devices");
trace_savevm_state_setup();
- QTAILQ_FOREACH(se, &savevm_state.handlers, entry) {
+ SAVEVM_FOREACH(se, entry) {
if (se->vmsd && se->vmsd->early_setup) {
ret = vmstate_save(f, se, ms->vmdesc, errp);
if (ret) {
@@ -1365,7 +1374,7 @@ int qemu_savevm_state_resume_prepare(MigrationState *s)
trace_savevm_state_resume_prepare();
- QTAILQ_FOREACH(se, &savevm_state.handlers, entry) {
+ SAVEVM_FOREACH(se, entry) {
if (!se->ops || !se->ops->resume_prepare) {
continue;
}
@@ -1396,7 +1405,7 @@ int qemu_savevm_state_iterate(QEMUFile *f, bool postcopy)
int ret;
trace_savevm_state_iterate();
- QTAILQ_FOREACH(se, &savevm_state.handlers, entry) {
+ SAVEVM_FOREACH(se, entry) {
if (!se->ops || !se->ops->save_live_iterate) {
continue;
}
@@ -1461,7 +1470,7 @@ void qemu_savevm_state_complete_postcopy(QEMUFile *f)
SaveStateEntry *se;
int ret;
- QTAILQ_FOREACH(se, &savevm_state.handlers, entry) {
+ SAVEVM_FOREACH(se, entry) {
if (!se->ops || !se->ops->save_live_complete_postcopy) {
continue;
}
@@ -1495,7 +1504,7 @@ int qemu_savevm_state_complete_precopy_iterable(QEMUFile
*f, bool in_postcopy)
SaveStateEntry *se;
int ret;
- QTAILQ_FOREACH(se, &savevm_state.handlers, entry) {
+ SAVEVM_FOREACH(se, entry) {
if (!se->ops ||
(in_postcopy && se->ops->has_postcopy &&
se->ops->has_postcopy(se->opaque)) ||
@@ -1543,7 +1552,7 @@ int
qemu_savevm_state_complete_precopy_non_iterable(QEMUFile *f,
Error *local_err = NULL;
int ret;
- QTAILQ_FOREACH(se, &savevm_state.handlers, entry) {
+ SAVEVM_FOREACH(se, entry) {
if (se->vmsd && se->vmsd->early_setup) {
/* Already saved during qemu_savevm_state_setup(). */
continue;
@@ -1649,7 +1658,7 @@ void qemu_savevm_state_pending_estimate(uint64_t
*must_precopy,
*must_precopy = 0;
*can_postcopy = 0;
- QTAILQ_FOREACH(se, &savevm_state.handlers, entry) {
+ SAVEVM_FOREACH(se, entry) {
if (!se->ops || !se->ops->state_pending_estimate) {
continue;
}
@@ -1670,7 +1679,7 @@ void qemu_savevm_state_pending_exact(uint64_t
*must_precopy,
*must_precopy = 0;
*can_postcopy = 0;
- QTAILQ_FOREACH(se, &savevm_state.handlers, entry) {
+ SAVEVM_FOREACH(se, entry) {
if (!se->ops || !se->ops->state_pending_exact) {
continue;
}
@@ -1693,7 +1702,7 @@ void qemu_savevm_state_cleanup(void)
}
trace_savevm_state_cleanup();
- QTAILQ_FOREACH(se, &savevm_state.handlers, entry) {
+ SAVEVM_FOREACH(se, entry) {
if (se->ops && se->ops->save_cleanup) {
se->ops->save_cleanup(se->opaque);
}
@@ -1778,7 +1787,7 @@ int qemu_save_device_state(QEMUFile *f)
}
cpu_synchronize_all_states();
- QTAILQ_FOREACH(se, &savevm_state.handlers, entry) {
+ SAVEVM_FOREACH(se, entry) {
int ret;
if (se->is_ram) {
@@ -1801,7 +1810,7 @@ static SaveStateEntry *find_se(const char *idstr,
uint32_t instance_id)
{
SaveStateEntry *se;
- QTAILQ_FOREACH(se, &savevm_state.handlers, entry) {
+ SAVEVM_FOREACH_ALL(se, entry) {
if (!strcmp(se->idstr, idstr) &&
(instance_id == se->instance_id ||
instance_id == se->alias_id))
@@ -2680,7 +2689,7 @@ qemu_loadvm_section_part_end(QEMUFile *f,
MigrationIncomingState *mis,
}
trace_qemu_loadvm_state_section_partend(section_id);
- QTAILQ_FOREACH(se, &savevm_state.handlers, entry) {
+ SAVEVM_FOREACH(se, entry) {
if (se->load_section_id == section_id) {
break;
}
@@ -2755,7 +2764,7 @@ static void
qemu_loadvm_state_switchover_ack_needed(MigrationIncomingState *mis)
{
SaveStateEntry *se;
- QTAILQ_FOREACH(se, &savevm_state.handlers, entry) {
+ SAVEVM_FOREACH(se, entry) {
if (!se->ops || !se->ops->switchover_ack_needed) {
continue;
}
@@ -2775,7 +2784,7 @@ static int qemu_loadvm_state_setup(QEMUFile *f, Error
**errp)
int ret;
trace_loadvm_state_setup();
- QTAILQ_FOREACH(se, &savevm_state.handlers, entry) {
+ SAVEVM_FOREACH(se, entry) {
if (!se->ops || !se->ops->load_setup) {
continue;
}
@@ -2801,7 +2810,7 @@ void qemu_loadvm_state_cleanup(void)
SaveStateEntry *se;
trace_loadvm_state_cleanup();
- QTAILQ_FOREACH(se, &savevm_state.handlers, entry) {
+ SAVEVM_FOREACH(se, entry) {
if (se->ops && se->ops->load_cleanup) {
se->ops->load_cleanup(se->opaque);
}
--
1.8.3.1
- [PATCH V1 00/26] Live update: cpr-exec, Steve Sistare, 2024/04/29
- [PATCH V1 02/26] vl: helper to request re-exec, Steve Sistare, 2024/04/29
- [PATCH V1 01/26] oslib: qemu_clear_cloexec, Steve Sistare, 2024/04/29
- [PATCH V1 06/26] migration: precreate vmstate for exec, Steve Sistare, 2024/04/29
- [PATCH V1 11/26] migration: vmstate_register at init time, Steve Sistare, 2024/04/29
- [PATCH V1 12/26] migration: vmstate factory object, Steve Sistare, 2024/04/29
- [PATCH V1 04/26] migration: delete unused parameter mis, Steve Sistare, 2024/04/29
- [PATCH V1 03/26] migration: SAVEVM_FOREACH,
Steve Sistare <=
- [PATCH V1 05/26] migration: precreate vmstate, Steve Sistare, 2024/04/29
- [PATCH V1 22/26] migration: ram block cpr-exec blockers, Steve Sistare, 2024/04/29
- [PATCH V1 10/26] migration: vmstate_unregister_named, Steve Sistare, 2024/04/29
- [PATCH V1 24/26] seccomp: cpr-exec blocker, Steve Sistare, 2024/04/29
- [PATCH V1 09/26] migration: vmstate_register_named, Steve Sistare, 2024/04/29
- [PATCH V1 07/26] migration: VMStateId, Steve Sistare, 2024/04/29
- [PATCH V1 25/26] migration: fix mismatched GPAs during cpr-exec, Steve Sistare, 2024/04/29
- [PATCH V1 17/26] machine: memfd-alloc option, Steve Sistare, 2024/04/29
- [PATCH V1 19/26] physmem: preserve ram blocks for cpr, Steve Sistare, 2024/04/29
- [PATCH V1 26/26] migration: only-migratable-modes, Steve Sistare, 2024/04/29