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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [qemu-xen master] migration/block-dirty-bitmap: rename state structure types
commit fbbc6b14705ea8c2f6326d4fab455d6432d83d08
Author: Vladimir Sementsov-Ogievskiy <vsementsov@xxxxxxxxxxxxx>
AuthorDate: Mon Jul 27 22:42:23 2020 +0300
Commit: Eric Blake <eblake@xxxxxxxxxx>
CommitDate: Mon Jul 27 15:39:59 2020 -0500
migration/block-dirty-bitmap: rename state structure types
Rename types to be symmetrical for load/save part and shorter.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@xxxxxxxxxxxxx>
Reviewed-by: Andrey Shinkevich <andrey.shinkevich@xxxxxxxxxxxxx>
Reviewed-by: Eric Blake <eblake@xxxxxxxxxx>
Message-Id: <20200727194236.19551-9-vsementsov@xxxxxxxxxxxxx>
Signed-off-by: Eric Blake <eblake@xxxxxxxxxx>
---
migration/block-dirty-bitmap.c | 70 ++++++++++++++++++++++--------------------
1 file changed, 37 insertions(+), 33 deletions(-)
diff --git a/migration/block-dirty-bitmap.c b/migration/block-dirty-bitmap.c
index 0739f1259e..1d57bff4f6 100644
--- a/migration/block-dirty-bitmap.c
+++ b/migration/block-dirty-bitmap.c
@@ -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;
}
--
generated by git-patchbot for /home/xen/git/qemu-xen.git#master
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