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Fix from a while back that unfortunately got ignored. Dave Gilbert says

Browse source 
it may actually fix a case where autoconverge would break on a repeat
 migration (and not just fix stats).
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Merge remote-tracking branch 'remotes/amit-migration/tags/for-2.2-2' into staging

Fix from a while back that unfortunately got ignored.  Dave Gilbert says
it may actually fix a case where autoconverge would break on a repeat
migration (and not just fix stats).

# gpg: Signature made Thu 20 Nov 2014 12:52:41 GMT using RSA key ID 854083B6
# gpg: Good signature from "Amit Shah <amit@amitshah.net>"
# gpg:                 aka "Amit Shah <amit@kernel.org>"
# gpg:                 aka "Amit Shah <amitshah@gmx.net>"

* remotes/amit-migration/tags/for-2.2-2:
  migration: static variables will not be reset at second migration

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2014-11-20 13:00:28 +00:00
parent af3ff19b48 6c1b663c4c
commit f75ad80f6c
1 changed files with 12 additions and 3 deletions
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15
arch_init.c
View file

@ -486,15 +486,23 @@ static void migration_bitmap_sync_range(ram_addr_t start, ram_addr_t length)
/* Needs iothread lock! */
/* Fix me: there are too many global variables used in migration process. */
static int64_t start_time;
static int64_t bytes_xfer_prev;
static int64_t num_dirty_pages_period;
static void migration_bitmap_sync_init(void)
{
start_time = 0;
bytes_xfer_prev = 0;
num_dirty_pages_period = 0;
}
static void migration_bitmap_sync(void)
{
RAMBlock *block;
uint64_t num_dirty_pages_init = migration_dirty_pages;
MigrationState *s = migrate_get_current();
static int64_t start_time;
static int64_t bytes_xfer_prev;
static int64_t num_dirty_pages_period;
int64_t end_time;
int64_t bytes_xfer_now;
static uint64_t xbzrle_cache_miss_prev;
@ -774,6 +782,7 @@ static int ram_save_setup(QEMUFile *f, void *opaque)
mig_throttle_on = false;
dirty_rate_high_cnt = 0;
bitmap_sync_count = 0;
migration_bitmap_sync_init();
if (migrate_use_xbzrle()) {
XBZRLE_cache_lock();