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ram: Move bitmap_sync_count into RAMState 

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 19:39:02 +01:00
parent 8d820d6f67
commit 5a98773896
1 changed files with 12 additions and 11 deletions
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23
migration/ram.c
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@ -45,8 +45,6 @@
#include "qemu/rcu_queue.h"
#include "migration/colo.h"
static uint64_t bitmap_sync_count;
/***********************************************************/
/* ram save/restore */
@ -154,6 +152,8 @@ struct RAMState {
bool ram_bulk_stage;
/* How many times we have dirty too many pages */
int dirty_rate_high_cnt;
/* How many times we have synchronized the bitmap */
uint64_t bitmap_sync_count;
};
typedef struct RAMState RAMState;
@ -471,7 +471,7 @@ static void xbzrle_cache_zero_page(RAMState *rs, ram_addr_t current_addr)
/* We don't care if this fails to allocate a new cache page
* as long as it updated an old one */
cache_insert(XBZRLE.cache, current_addr, ZERO_TARGET_PAGE,
bitmap_sync_count);
rs->bitmap_sync_count);
}
#define ENCODING_FLAG_XBZRLE 0x1
@ -483,6 +483,7 @@ static void xbzrle_cache_zero_page(RAMState *rs, ram_addr_t current_addr)
* 0 means that page is identical to the one already sent
* -1 means that xbzrle would be longer than normal
*
* @rs: current RAM state
* @f: QEMUFile where to send the data
* @current_data: pointer to the address of the page contents
* @current_addr: addr of the page
@ -491,7 +492,7 @@ static void xbzrle_cache_zero_page(RAMState *rs, ram_addr_t current_addr)
* @last_stage: if we are at the completion stage
* @bytes_transferred: increase it with the number of transferred bytes
*/
static int save_xbzrle_page(QEMUFile *f, uint8_t **current_data,
static int save_xbzrle_page(RAMState *rs, QEMUFile *f, uint8_t **current_data,
ram_addr_t current_addr, RAMBlock *block,
ram_addr_t offset, bool last_stage,
uint64_t *bytes_transferred)
@ -499,11 +500,11 @@ static int save_xbzrle_page(QEMUFile *f, uint8_t **current_data,
int encoded_len = 0, bytes_xbzrle;
uint8_t *prev_cached_page;
if (!cache_is_cached(XBZRLE.cache, current_addr, bitmap_sync_count)) {
if (!cache_is_cached(XBZRLE.cache, current_addr, rs->bitmap_sync_count)) {
acct_info.xbzrle_cache_miss++;
if (!last_stage) {
if (cache_insert(XBZRLE.cache, current_addr, *current_data,
bitmap_sync_count) == -1) {
rs->bitmap_sync_count) == -1) {
return -1;
} else {
/* update *current_data when the page has been
@ -658,7 +659,7 @@ static void migration_bitmap_sync(RAMState *rs)
int64_t end_time;
int64_t bytes_xfer_now;
bitmap_sync_count++;
rs->bitmap_sync_count++;
if (!bytes_xfer_prev) {
bytes_xfer_prev = ram_bytes_transferred();
@ -720,9 +721,9 @@ static void migration_bitmap_sync(RAMState *rs)
start_time = end_time;
num_dirty_pages_period = 0;
}
s->dirty_sync_count = bitmap_sync_count;
s->dirty_sync_count = rs->bitmap_sync_count;
if (migrate_use_events()) {
qapi_event_send_migration_pass(bitmap_sync_count, NULL);
qapi_event_send_migration_pass(rs->bitmap_sync_count, NULL);
}
}
@ -829,7 +830,7 @@ static int ram_save_page(RAMState *rs, MigrationState *ms, QEMUFile *f,
ram_release_pages(ms, block->idstr, pss->offset, pages);
} else if (!rs->ram_bulk_stage &&
!migration_in_postcopy(ms) && migrate_use_xbzrle()) {
pages = save_xbzrle_page(f, &p, current_addr, block,
pages = save_xbzrle_page(rs, f, &p, current_addr, block,
offset, last_stage, bytes_transferred);
if (!last_stage) {
/* Can't send this cached data async, since the cache page
@ -1999,7 +2000,7 @@ static int ram_save_init_globals(RAMState *rs)
int64_t ram_bitmap_pages; /* Size of bitmap in pages, including gaps */
rs->dirty_rate_high_cnt = 0;
bitmap_sync_count = 0;
rs->bitmap_sync_count = 0;
migration_bitmap_sync_init();
qemu_mutex_init(&migration_bitmap_mutex);