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colo: make colo_checkpoint_notify static and provide simpler API

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colo_checkpoint_notify() is mostly used in colo.c. Outside we use it
once when x-checkpoint-delay migration parameter is set. So, let's
simplify the external API to only that function - notify COLO that
parameter was set. This make external API more robust and hides
implementation details from external callers. Also this helps us to
make COLO module optional in further patch (i.e. we are going to add
possibility not build the COLO module).

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Zhang Chen <chen.zhang@intel.com>
Message-Id: <20230428194928.1426370-3-vsementsov@yandex-team.ru>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2023-04-28 22:49:20 +03:00 • committed by Juan Quintela
parent 43c71fe3b8
commit 4332ffcd7b
3 changed files with 27 additions and 15 deletions
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9
include/migration/colo.h
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@ -36,6 +36,13 @@ COLOMode get_colo_mode(void);
/* failover */
void colo_do_failover(void);
void colo_checkpoint_notify(void *opaque);
/*
* colo_checkpoint_delay_set
*
* Handles change of x-checkpoint-delay migration parameter, called from
* migrate_params_apply() to notify COLO module about the change.
*/
void colo_checkpoint_delay_set(void);
void colo_shutdown(void);
#endif