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authorWei Wang <wei.w.wang@intel.com>2018-12-11 16:24:51 +0800
committerDr. David Alan Gilbert <dgilbert@redhat.com>2019-03-06 10:49:18 +0000
commitbd2270608fa0112108aafcba89b87282c68db741 (patch)
tree979a6b79d0f1a56f6fe6a134d77a6f5bf6acd312 /migration/savevm.c
parent6bcb05fc4211d2bd88fe73c65e93602428c51e5b (diff)
migration/ram.c: add a notifier chain for precopy
This patch adds a notifier chain for the memory precopy. This enables various precopy optimizations to be invoked at specific places. Signed-off-by: Wei Wang <wei.w.wang@intel.com> CC: Dr. David Alan Gilbert <dgilbert@redhat.com> CC: Juan Quintela <quintela@redhat.com> CC: Michael S. Tsirkin <mst@redhat.com> CC: Peter Xu <peterx@redhat.com> Reviewed-by: Peter Xu <peterx@redhat.com> Message-Id: <1544516693-5395-6-git-send-email-wei.w.wang@intel.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Diffstat (limited to 'migration/savevm.c')
-rw-r--r--migration/savevm.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/migration/savevm.c b/migration/savevm.c
index 013098581f..1415001d1c 100644
--- a/migration/savevm.c
+++ b/migration/savevm.c
@@ -1088,6 +1088,7 @@ void qemu_savevm_state_header(QEMUFile *f)
void qemu_savevm_state_setup(QEMUFile *f)
{
SaveStateEntry *se;
+ Error *local_err = NULL;
int ret;
trace_savevm_state_setup();
@@ -1109,6 +1110,10 @@ void qemu_savevm_state_setup(QEMUFile *f)
break;
}
}
+
+ if (precopy_notify(PRECOPY_NOTIFY_SETUP, &local_err)) {
+ error_report_err(local_err);
+ }
}
int qemu_savevm_state_resume_prepare(MigrationState *s)
@@ -1251,6 +1256,11 @@ int qemu_savevm_state_complete_precopy(QEMUFile *f, bool iterable_only,
SaveStateEntry *se;
int ret;
bool in_postcopy = migration_in_postcopy();
+ Error *local_err = NULL;
+
+ if (precopy_notify(PRECOPY_NOTIFY_COMPLETE, &local_err)) {
+ error_report_err(local_err);
+ }
trace_savevm_state_complete_precopy();
@@ -1383,6 +1393,11 @@ void qemu_savevm_state_pending(QEMUFile *f, uint64_t threshold_size,
void qemu_savevm_state_cleanup(void)
{
SaveStateEntry *se;
+ Error *local_err = NULL;
+
+ if (precopy_notify(PRECOPY_NOTIFY_CLEANUP, &local_err)) {
+ error_report_err(local_err);
+ }
trace_savevm_state_cleanup();
QTAILQ_FOREACH(se, &savevm_state.handlers, entry) {