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migration/block-dirty-bitmap: rename state structure types

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Rename types to be symmetrical for load/save part and shorter.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200727194236.19551-9-vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2020-07-27 22:42:23 +03:00 committed by Eric Blake
parent e6ce5e9224
commit fbbc6b1470
1 changed files with 37 additions and 33 deletions
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70
migration/block-dirty-bitmap.c
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@ -100,23 +100,25 @@
/* 0x04 was "AUTOLOAD" flags on elder versions, no it is ignored */
#define DIRTY_BITMAP_MIG_START_FLAG_RESERVED_MASK 0xf8
typedef struct DirtyBitmapMigBitmapState {
/* State of one bitmap during save process */
typedef struct SaveBitmapState {
/* Written during setup phase. */
BlockDriverState *bs;
const char *node_name;
BdrvDirtyBitmap *bitmap;
uint64_t total_sectors;
uint64_t sectors_per_chunk;
QSIMPLEQ_ENTRY(DirtyBitmapMigBitmapState) entry;
QSIMPLEQ_ENTRY(SaveBitmapState) entry;
uint8_t flags;
/* For bulk phase. */
bool bulk_completed;
uint64_t cur_sector;
} DirtyBitmapMigBitmapState;
} SaveBitmapState;
typedef struct DirtyBitmapMigState {
QSIMPLEQ_HEAD(, DirtyBitmapMigBitmapState) dbms_list;
/* State of the dirty bitmap migration (DBM) during save process */
typedef struct DBMSaveState {
QSIMPLEQ_HEAD(, SaveBitmapState) dbms_list;
bool bulk_completed;
bool no_bitmaps;
@ -124,23 +126,25 @@ typedef struct DirtyBitmapMigState {
/* for send_bitmap_bits() */
BlockDriverState *prev_bs;
BdrvDirtyBitmap *prev_bitmap;
} DirtyBitmapMigState;
} DBMSaveState;
typedef struct DirtyBitmapLoadState {
/* State of the dirty bitmap migration (DBM) during load process */
typedef struct DBMLoadState {
uint32_t flags;
char node_name[256];
char bitmap_name[256];
BlockDriverState *bs;
BdrvDirtyBitmap *bitmap;
} DirtyBitmapLoadState;
} DBMLoadState;
static DirtyBitmapMigState dirty_bitmap_mig_state;
static DBMSaveState dirty_bitmap_mig_state;
typedef struct DirtyBitmapLoadBitmapState {
/* State of one bitmap during load process */
typedef struct LoadBitmapState {
BlockDriverState *bs;
BdrvDirtyBitmap *bitmap;
bool migrated;
} DirtyBitmapLoadBitmapState;
} LoadBitmapState;
static GSList *enabled_bitmaps;
QemuMutex finish_lock;
@ -170,7 +174,7 @@ static void qemu_put_bitmap_flags(QEMUFile *f, uint32_t flags)
qemu_put_byte(f, flags);
}
static void send_bitmap_header(QEMUFile *f, DirtyBitmapMigBitmapState *dbms,
static void send_bitmap_header(QEMUFile *f, SaveBitmapState *dbms,
uint32_t additional_flags)
{
BlockDriverState *bs = dbms->bs;
@ -199,19 +203,19 @@ static void send_bitmap_header(QEMUFile *f, DirtyBitmapMigBitmapState *dbms,
}
}
static void send_bitmap_start(QEMUFile *f, DirtyBitmapMigBitmapState *dbms)
static void send_bitmap_start(QEMUFile *f, SaveBitmapState *dbms)
{
send_bitmap_header(f, dbms, DIRTY_BITMAP_MIG_FLAG_START);
qemu_put_be32(f, bdrv_dirty_bitmap_granularity(dbms->bitmap));
qemu_put_byte(f, dbms->flags);
}
static void send_bitmap_complete(QEMUFile *f, DirtyBitmapMigBitmapState *dbms)
static void send_bitmap_complete(QEMUFile *f, SaveBitmapState *dbms)
{
send_bitmap_header(f, dbms, DIRTY_BITMAP_MIG_FLAG_COMPLETE);
}
static void send_bitmap_bits(QEMUFile *f, DirtyBitmapMigBitmapState *dbms,
static void send_bitmap_bits(QEMUFile *f, SaveBitmapState *dbms,
uint64_t start_sector, uint32_t nr_sectors)
{
/* align for buffer_is_zero() */
@ -257,7 +261,7 @@ static void send_bitmap_bits(QEMUFile *f, DirtyBitmapMigBitmapState *dbms,
/* Called with iothread lock taken. */
static void dirty_bitmap_mig_cleanup(void)
{
DirtyBitmapMigBitmapState *dbms;
SaveBitmapState *dbms;
while ((dbms = QSIMPLEQ_FIRST(&dirty_bitmap_mig_state.dbms_list)) != NULL) {
QSIMPLEQ_REMOVE_HEAD(&dirty_bitmap_mig_state.dbms_list, entry);
@ -271,7 +275,7 @@ static void dirty_bitmap_mig_cleanup(void)
static int add_bitmaps_to_list(BlockDriverState *bs, const char *bs_name)
{
BdrvDirtyBitmap *bitmap;
DirtyBitmapMigBitmapState *dbms;
SaveBitmapState *dbms;
Error *local_err = NULL;
FOR_EACH_DIRTY_BITMAP(bs, bitmap) {
@ -309,7 +313,7 @@ static int add_bitmaps_to_list(BlockDriverState *bs, const char *bs_name)
bdrv_ref(bs);
bdrv_dirty_bitmap_set_busy(bitmap, true);
dbms = g_new0(DirtyBitmapMigBitmapState, 1);
dbms = g_new0(SaveBitmapState, 1);
dbms->bs = bs;
dbms->node_name = bs_name;
dbms->bitmap = bitmap;
@ -334,7 +338,7 @@ static int add_bitmaps_to_list(BlockDriverState *bs, const char *bs_name)
static int init_dirty_bitmap_migration(void)
{
BlockDriverState *bs;
DirtyBitmapMigBitmapState *dbms;
SaveBitmapState *dbms;
GHashTable *handled_by_blk = g_hash_table_new(NULL, NULL);
BlockBackend *blk;
@ -408,7 +412,7 @@ fail:
}
/* Called with no lock taken. */
static void bulk_phase_send_chunk(QEMUFile *f, DirtyBitmapMigBitmapState *dbms)
static void bulk_phase_send_chunk(QEMUFile *f, SaveBitmapState *dbms)
{
uint32_t nr_sectors = MIN(dbms->total_sectors - dbms->cur_sector,
dbms->sectors_per_chunk);
@ -424,7 +428,7 @@ static void bulk_phase_send_chunk(QEMUFile *f, DirtyBitmapMigBitmapState *dbms)
/* Called with no lock taken. */
static void bulk_phase(QEMUFile *f, bool limit)
{
DirtyBitmapMigBitmapState *dbms;
SaveBitmapState *dbms;
QSIMPLEQ_FOREACH(dbms, &dirty_bitmap_mig_state.dbms_list, entry) {
while (!dbms->bulk_completed) {
@ -461,7 +465,7 @@ static int dirty_bitmap_save_iterate(QEMUFile *f, void *opaque)
static int dirty_bitmap_save_complete(QEMUFile *f, void *opaque)
{
DirtyBitmapMigBitmapState *dbms;
SaveBitmapState *dbms;
trace_dirty_bitmap_save_complete_enter();
if (!dirty_bitmap_mig_state.bulk_completed) {
@ -486,7 +490,7 @@ static void dirty_bitmap_save_pending(QEMUFile *f, void *opaque,
uint64_t *res_compatible,
uint64_t *res_postcopy_only)
{
DirtyBitmapMigBitmapState *dbms;
SaveBitmapState *dbms;
uint64_t pending = 0;
qemu_mutex_lock_iothread();
@ -507,7 +511,7 @@ static void dirty_bitmap_save_pending(QEMUFile *f, void *opaque,
}
/* First occurrence of this bitmap. It should be created if doesn't exist */
static int dirty_bitmap_load_start(QEMUFile *f, DirtyBitmapLoadState *s)
static int dirty_bitmap_load_start(QEMUFile *f, DBMLoadState *s)
{
Error *local_err = NULL;
uint32_t granularity = qemu_get_be32(f);
@ -538,7 +542,7 @@ static int dirty_bitmap_load_start(QEMUFile *f, DirtyBitmapLoadState *s)
bdrv_disable_dirty_bitmap(s->bitmap);
if (flags & DIRTY_BITMAP_MIG_START_FLAG_ENABLED) {
DirtyBitmapLoadBitmapState *b;
LoadBitmapState *b;
bdrv_dirty_bitmap_create_successor(s->bitmap, &local_err);
if (local_err) {
@ -546,7 +550,7 @@ static int dirty_bitmap_load_start(QEMUFile *f, DirtyBitmapLoadState *s)
return -EINVAL;
}
b = g_new(DirtyBitmapLoadBitmapState, 1);
b = g_new(LoadBitmapState, 1);
b->bs = s->bs;
b->bitmap = s->bitmap;
b->migrated = false;
@ -563,7 +567,7 @@ void dirty_bitmap_mig_before_vm_start(void)
qemu_mutex_lock(&finish_lock);
for (item = enabled_bitmaps; item; item = g_slist_next(item)) {
DirtyBitmapLoadBitmapState *b = item->data;
LoadBitmapState *b = item->data;
if (b->migrated) {
bdrv_enable_dirty_bitmap(b->bitmap);
@ -580,7 +584,7 @@ void dirty_bitmap_mig_before_vm_start(void)
qemu_mutex_unlock(&finish_lock);
}
static void dirty_bitmap_load_complete(QEMUFile *f, DirtyBitmapLoadState *s)
static void dirty_bitmap_load_complete(QEMUFile *f, DBMLoadState *s)
{
GSList *item;
trace_dirty_bitmap_load_complete();
@ -589,7 +593,7 @@ static void dirty_bitmap_load_complete(QEMUFile *f, DirtyBitmapLoadState *s)
qemu_mutex_lock(&finish_lock);
for (item = enabled_bitmaps; item; item = g_slist_next(item)) {
DirtyBitmapLoadBitmapState *b = item->data;
LoadBitmapState *b = item->data;
if (b->bitmap == s->bitmap) {
b->migrated = true;
@ -621,7 +625,7 @@ static void dirty_bitmap_load_complete(QEMUFile *f, DirtyBitmapLoadState *s)
qemu_mutex_unlock(&finish_lock);
}
static int dirty_bitmap_load_bits(QEMUFile *f, DirtyBitmapLoadState *s)
static int dirty_bitmap_load_bits(QEMUFile *f, DBMLoadState *s)
{
uint64_t first_byte = qemu_get_be64(f) << BDRV_SECTOR_BITS;
uint64_t nr_bytes = (uint64_t)qemu_get_be32(f) << BDRV_SECTOR_BITS;
@ -666,7 +670,7 @@ static int dirty_bitmap_load_bits(QEMUFile *f, DirtyBitmapLoadState *s)
return 0;
}
static int dirty_bitmap_load_header(QEMUFile *f, DirtyBitmapLoadState *s)
static int dirty_bitmap_load_header(QEMUFile *f, DBMLoadState *s)
{
Error *local_err = NULL;
bool nothing;
@ -715,7 +719,7 @@ static int dirty_bitmap_load_header(QEMUFile *f, DirtyBitmapLoadState *s)
static int dirty_bitmap_load(QEMUFile *f, void *opaque, int version_id)
{
static DirtyBitmapLoadState s;
static DBMLoadState s;
int ret = 0;
trace_dirty_bitmap_load_enter();
@ -753,7 +757,7 @@ static int dirty_bitmap_load(QEMUFile *f, void *opaque, int version_id)
static int dirty_bitmap_save_setup(QEMUFile *f, void *opaque)
{
DirtyBitmapMigBitmapState *dbms = NULL;
SaveBitmapState *dbms = NULL;
if (init_dirty_bitmap_migration() < 0) {
return -1;
}