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ram: Everything was init to zero, so use memset 

And then init only things that are not zero by default.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
This commit is contained in:
Juan Quintela 2017-03-13 21:29:54 +01:00
parent 0d8ec885ed
commit ceb4d16898
1 changed files with 3 additions and 22 deletions
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25
migration/ram.c
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@ -612,15 +612,6 @@ static void migration_bitmap_sync_range(RAMState *rs, ram_addr_t start,
&rs->num_dirty_pages_period);
}
static void migration_bitmap_sync_init(RAMState *rs)
{
rs->time_last_bitmap_sync = 0;
rs->bytes_xfer_prev = 0;
rs->num_dirty_pages_period = 0;
rs->xbzrle_cache_miss_prev = 0;
rs->iterations_prev = 0;
}
/**
* ram_pagesize_summary: calculate all the pagesizes of a VM
*
@ -1986,21 +1977,11 @@ err:
return ret;
}
static int ram_save_init_globals(RAMState *rs)
static int ram_state_init(RAMState *rs)
{
int64_t ram_bitmap_pages; /* Size of bitmap in pages, including gaps */
rs->dirty_rate_high_cnt = 0;
rs->bitmap_sync_count = 0;
rs->zero_pages = 0;
rs->norm_pages = 0;
rs->iterations = 0;
rs->xbzrle_bytes = 0;
rs->xbzrle_pages = 0;
rs->xbzrle_cache_miss = 0;
rs->xbzrle_cache_miss_rate = 0;
rs->xbzrle_overflows = 0;
migration_bitmap_sync_init(rs);
memset(rs, 0, sizeof(*rs));
qemu_mutex_init(&migration_bitmap_mutex);
if (migrate_use_xbzrle()) {
@ -2090,7 +2071,7 @@ static int ram_save_setup(QEMUFile *f, void *opaque)
/* migration has already setup the bitmap, reuse it. */
if (!migration_in_colo_state()) {
if (ram_save_init_globals(rs) < 0) {
if (ram_state_init(rs) < 0) {
return -1;
}
}