char: qemu_chr_ioctl() -> qemu_chr_fe_ioctl()

[qemu.git] / block-migration.c

diff --git a/block-migration.c b/block-migration.c
index c9d3e81dbfbfda9362babdb530597c192d40eb5c..e2775ee50b569136b41db5292baaf04ba434c891 100644 (file)
--- a/block-migration.c
+++ b/block-migration.c
@@ -19,6 +19,7 @@
 #include "monitor.h"
 #include "block-migration.h"
 #include "migration.h"
+#include "blockdev.h"
 #include <assert.h>
 
 #define BLOCK_SIZE (BDRV_SECTORS_PER_DIRTY_CHUNK << BDRV_SECTOR_BITS)
@@ -61,7 +62,6 @@ typedef struct BlkMigBlock {
     QEMUIOVector qiov;
     BlockDriverAIOCB *aiocb;
     int ret;
-    int64_t time;
     QSIMPLEQ_ENTRY(BlkMigBlock) entry;
 } BlkMigBlock;
 
@@ -77,6 +77,7 @@ typedef struct BlkMigState {
     int prev_progress;
     int bulk_completed;
     long double total_time;
+    long double prev_time_offset;
     int reads;
 } BlkMigState;
 
@@ -130,16 +131,10 @@ uint64_t blk_mig_bytes_total(void)
     return sum << BDRV_SECTOR_BITS;
 }
 
-static inline void add_avg_read_time(int64_t time)
-{
-    block_mig_state.reads++;
-    block_mig_state.total_time += time;
-}
-
 static inline long double compute_read_bwidth(void)
 {
     assert(block_mig_state.total_time != 0);
-    return  (block_mig_state.reads * BLOCK_SIZE)/ block_mig_state.total_time;
+    return (block_mig_state.reads / block_mig_state.total_time) * BLOCK_SIZE;
 }
 
 static int bmds_aio_inflight(BlkMigDevState *bmds, int64_t sector)
@@ -185,18 +180,19 @@ static void alloc_aio_bitmap(BlkMigDevState *bmds)
             BDRV_SECTORS_PER_DIRTY_CHUNK * 8 - 1;
     bitmap_size /= BDRV_SECTORS_PER_DIRTY_CHUNK * 8;
 
-    bmds->aio_bitmap = qemu_mallocz(bitmap_size);
+    bmds->aio_bitmap = g_malloc0(bitmap_size);
 }
 
 static void blk_mig_read_cb(void *opaque, int ret)
 {
+    long double curr_time = qemu_get_clock_ns(rt_clock);
     BlkMigBlock *blk = opaque;
 
     blk->ret = ret;
 
-    blk->time = qemu_get_clock_ns(rt_clock) - blk->time;
-
-    add_avg_read_time(blk->time);
+    block_mig_state.reads++;
+    block_mig_state.total_time += (curr_time - block_mig_state.prev_time_offset);
+    block_mig_state.prev_time_offset = curr_time;
 
     QSIMPLEQ_INSERT_TAIL(&block_mig_state.blk_list, blk, entry);
     bmds_set_aio_inflight(blk->bmds, blk->sector, blk->nr_sectors, 0);
@@ -239,8 +235,8 @@ static int mig_save_device_bulk(Monitor *mon, QEMUFile *f,
         nr_sectors = total_sectors - cur_sector;
     }
 
-    blk = qemu_malloc(sizeof(BlkMigBlock));
-    blk->buf = qemu_malloc(BLOCK_SIZE);
+    blk = g_malloc(sizeof(BlkMigBlock));
+    blk->buf = g_malloc(BLOCK_SIZE);
     blk->bmds = bmds;
     blk->sector = cur_sector;
     blk->nr_sectors = nr_sectors;
@@ -249,7 +245,9 @@ static int mig_save_device_bulk(Monitor *mon, QEMUFile *f,
     blk->iov.iov_len = nr_sectors * BDRV_SECTOR_SIZE;
     qemu_iovec_init_external(&blk->qiov, &blk->iov, 1);
 
-    blk->time = qemu_get_clock_ns(rt_clock);
+    if (block_mig_state.submitted == 0) {
+        block_mig_state.prev_time_offset = qemu_get_clock_ns(rt_clock);
+    }
 
     blk->aiocb = bdrv_aio_readv(bs, cur_sector, &blk->qiov,
                                 nr_sectors, blk_mig_read_cb, blk);
@@ -266,8 +264,8 @@ static int mig_save_device_bulk(Monitor *mon, QEMUFile *f,
 error:
     monitor_printf(mon, "Error reading sector %" PRId64 "\n", cur_sector);
     qemu_file_set_error(f);
-    qemu_free(blk->buf);
-    qemu_free(blk);
+    g_free(blk->buf);
+    g_free(blk);
     return 0;
 }
 
@@ -292,13 +290,15 @@ static void init_blk_migration_it(void *opaque, BlockDriverState *bs)
             return;
         }
 
-        bmds = qemu_mallocz(sizeof(BlkMigDevState));
+        bmds = g_malloc0(sizeof(BlkMigDevState));
         bmds->bs = bs;
         bmds->bulk_completed = 0;
         bmds->total_sectors = sectors;
         bmds->completed_sectors = 0;
         bmds->shared_base = block_mig_state.shared_base;
         alloc_aio_bitmap(bmds);
+        drive_get_ref(drive_get_by_blockdev(bs));
+        bdrv_set_in_use(bs, 1);
 
         block_mig_state.total_sector_sum += sectors;
 
@@ -395,8 +395,8 @@ static int mig_save_device_dirty(Monitor *mon, QEMUFile *f,
             } else {
                 nr_sectors = BDRV_SECTORS_PER_DIRTY_CHUNK;
             }
-            blk = qemu_malloc(sizeof(BlkMigBlock));
-            blk->buf = qemu_malloc(BLOCK_SIZE);
+            blk = g_malloc(sizeof(BlkMigBlock));
+            blk->buf = g_malloc(BLOCK_SIZE);
             blk->bmds = bmds;
             blk->sector = sector;
             blk->nr_sectors = nr_sectors;
@@ -406,7 +406,9 @@ static int mig_save_device_dirty(Monitor *mon, QEMUFile *f,
                 blk->iov.iov_len = nr_sectors * BDRV_SECTOR_SIZE;
                 qemu_iovec_init_external(&blk->qiov, &blk->iov, 1);
 
-                blk->time = qemu_get_clock_ns(rt_clock);
+                if (block_mig_state.submitted == 0) {
+                    block_mig_state.prev_time_offset = qemu_get_clock_ns(rt_clock);
+                }
 
                 blk->aiocb = bdrv_aio_readv(bmds->bs, sector, &blk->qiov,
                                             nr_sectors, blk_mig_read_cb, blk);
@@ -422,8 +424,8 @@ static int mig_save_device_dirty(Monitor *mon, QEMUFile *f,
                 }
                 blk_send(f, blk);
 
-                qemu_free(blk->buf);
-                qemu_free(blk);
+                g_free(blk->buf);
+                g_free(blk);
             }
 
             bdrv_reset_dirty(bmds->bs, sector, nr_sectors);
@@ -438,8 +440,8 @@ static int mig_save_device_dirty(Monitor *mon, QEMUFile *f,
 error:
     monitor_printf(mon, "Error reading sector %" PRId64 "\n", sector);
     qemu_file_set_error(f);
-    qemu_free(blk->buf);
-    qemu_free(blk);
+    g_free(blk->buf);
+    g_free(blk);
     return 0;
 }
 
@@ -477,8 +479,8 @@ static void flush_blks(QEMUFile* f)
         blk_send(f, blk);
 
         QSIMPLEQ_REMOVE_HEAD(&block_mig_state.blk_list, entry);
-        qemu_free(blk->buf);
-        qemu_free(blk);
+        g_free(blk->buf);
+        g_free(blk);
 
         block_mig_state.read_done--;
         block_mig_state.transferred++;
@@ -533,20 +535,22 @@ static void blk_mig_cleanup(Monitor *mon)
     BlkMigDevState *bmds;
     BlkMigBlock *blk;
 
+    set_dirty_tracking(0);
+
     while ((bmds = QSIMPLEQ_FIRST(&block_mig_state.bmds_list)) != NULL) {
         QSIMPLEQ_REMOVE_HEAD(&block_mig_state.bmds_list, entry);
-        qemu_free(bmds->aio_bitmap);
-        qemu_free(bmds);
+        bdrv_set_in_use(bmds->bs, 0);
+        drive_put_ref(drive_get_by_blockdev(bmds->bs));
+        g_free(bmds->aio_bitmap);
+        g_free(bmds);
     }
 
     while ((blk = QSIMPLEQ_FIRST(&block_mig_state.blk_list)) != NULL) {
         QSIMPLEQ_REMOVE_HEAD(&block_mig_state.blk_list, entry);
-        qemu_free(blk->buf);
-        qemu_free(blk);
+        g_free(blk->buf);
+        g_free(blk);
     }
 
-    set_dirty_tracking(0);
-
     monitor_printf(mon, "\n");
 }
 
@@ -667,7 +671,7 @@ static int block_load(QEMUFile *f, void *opaque, int version_id)
                 bs_prev = bs;
                 total_sectors = bdrv_getlength(bs) >> BDRV_SECTOR_BITS;
                 if (total_sectors <= 0) {
-                    error_report("Error getting length of block device %s\n",
+                    error_report("Error getting length of block device %s",
                                  device_name);
                     return -EINVAL;
                 }
@@ -679,12 +683,12 @@ static int block_load(QEMUFile *f, void *opaque, int version_id)
                 nr_sectors = BDRV_SECTORS_PER_DIRTY_CHUNK;
             }
 
-            buf = qemu_malloc(BLOCK_SIZE);
+            buf = g_malloc(BLOCK_SIZE);
 
             qemu_get_buffer(f, buf, BLOCK_SIZE);
             ret = bdrv_write(bs, addr, buf, nr_sectors);
 
-            qemu_free(buf);
+            g_free(buf);
             if (ret < 0) {
                 return ret;
             }