[Qemu-devel] [PATCH V19 6/8] add debug event for add-cow

[Dongxu Wang <wdongxu@linux.vnet.ibm.com>]

From: Dong Xu Wang <wdongxu@linux.vnet.ibm.com>

Signed-off-by: Dong Xu Wang <wdongxu@linux.vnet.ibm.com>
Signed-off-by: Dongxu Wang <wdongxu@linux.vnet.ibm.com>
---
 block/blkdebug.c      | 3 +++
 block/block-cache.c   | 4 ++--
 include/block/block.h | 3 +++
 3 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/block/blkdebug.c b/block/blkdebug.c
index 71f99e4..2bd6a53 100644
--- a/block/blkdebug.c
+++ b/block/blkdebug.c
@@ -182,6 +182,9 @@ static const char *event_names[BLKDBG_EVENT_MAX] = {
     [BLKDBG_CLUSTER_ALLOC]                  = "cluster_alloc",
     [BLKDBG_CLUSTER_ALLOC_BYTES]            = "cluster_alloc_bytes",
     [BLKDBG_CLUSTER_FREE]                   = "cluster_free",
+
+    [BLKDBG_ADDCOW_READ]                    = "add_cow_read",
+    [BLKDBG_ADDCOW_WRITE]                   = "add_cow_write",
 };
 
 static int get_event_by_name(const char *name, BlkDebugEvent *event)
diff --git a/block/block-cache.c b/block/block-cache.c
index f5d75d1..454269c 100644
--- a/block/block-cache.c
+++ b/block/block-cache.c
@@ -125,7 +125,7 @@ static int block_cache_entry_flush(BlockDriverState *bs, BlockCache *c, int i)
     } else if (c->table_type == BLOCK_TABLE_L2) {
         BLKDBG_EVENT(bs->file, BLKDBG_L2_UPDATE);
     } else if (c->table_type == BLOCK_TABLE_BITMAP) {
-        BLKDBG_EVENT(bs->file, BLKDBG_COW_WRITE);
+        BLKDBG_EVENT(bs->file, BLKDBG_ADDCOW_WRITE);
     }
 
     ret = bdrv_pwrite(bs->file, c->entries[i].offset,
@@ -260,7 +260,7 @@ static int block_cache_do_get(BlockDriverState *bs, BlockCache *c,
         if (c->table_type == BLOCK_TABLE_L2) {
             BLKDBG_EVENT(bs->file, BLKDBG_L2_LOAD);
         } else if (c->table_type == BLOCK_TABLE_BITMAP) {
-            BLKDBG_EVENT(bs->file, BLKDBG_COW_READ);
+            BLKDBG_EVENT(bs->file, BLKDBG_ADDCOW_READ);
         }
 
         ret = bdrv_pread(bs->file, offset, c->entries[i].table,
diff --git a/include/block/block.h b/include/block/block.h
index 2989da6..3573e3e 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -451,6 +451,9 @@ typedef enum {
     BLKDBG_CLUSTER_ALLOC_BYTES,
     BLKDBG_CLUSTER_FREE,
 
+    BLKDBG_ADDCOW_READ,
+    BLKDBG_ADDCOW_WRITE,
+
     BLKDBG_EVENT_MAX,
 } BlkDebugEvent;
 
-- 
1.7.11.7