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migration: Make dirty_sync_missed_zero_copy atomic 

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
master
Juan Quintela 2023-04-11 17:33:56 +02:00
parent cf671116fa
commit 4291823694
4 changed files with 3 additions and 10 deletions
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2
migration/migration.c
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@ -1150,7 +1150,7 @@ static void populate_ram_info(MigrationInfo *info, MigrationState *s)
info->ram->mbps = s->mbps;
info->ram->dirty_sync_count = ram_counters.dirty_sync_count;
info->ram->dirty_sync_missed_zero_copy =
ram_counters.dirty_sync_missed_zero_copy;
stat64_get(&ram_counters.dirty_sync_missed_zero_copy);
info->ram->postcopy_requests = ram_counters.postcopy_requests;
info->ram->page_size = page_size;
info->ram->multifd_bytes = stat64_get(&ram_counters.multifd_bytes);

2
migration/multifd.c
View File

@ -576,7 +576,7 @@ static int multifd_zero_copy_flush(QIOChannel *c)
return -1;
}
if (ret == 1) {
dirty_sync_missed_zero_copy();
stat64_add(&ram_counters.dirty_sync_missed_zero_copy, 1);
}
return ret;

5
migration/ram.c
View File

@ -472,11 +472,6 @@ void ram_transferred_add(uint64_t bytes)
stat64_add(&ram_counters.transferred, bytes);
}
void dirty_sync_missed_zero_copy(void)
{
ram_counters.dirty_sync_missed_zero_copy++;
}
struct MigrationOps {
int (*ram_save_target_page)(RAMState *rs, PageSearchStatus *pss);
};

4
migration/ram.h
View File

@ -43,7 +43,7 @@
typedef struct {
int64_t dirty_pages_rate;
int64_t dirty_sync_count;
uint64_t dirty_sync_missed_zero_copy;
Stat64 dirty_sync_missed_zero_copy;
uint64_t downtime_bytes;
Stat64 duplicate;
Stat64 multifd_bytes;
@ -114,6 +114,4 @@ void ram_write_tracking_prepare(void);
int ram_write_tracking_start(void);
void ram_write_tracking_stop(void);
void dirty_sync_missed_zero_copy(void);
#endif