[Qemu-devel] [PATCH 03/15] dma-helpers: add accounting wrappers

[Paolo Bonzini <pbonzini@redhat.com>]

The length of the transfer is already in the sglist, and may be opaque to
the device if it is not in hw/.  So add a wrapper that fetches it.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 dma-helpers.c |    6 ++++++
 dma.h         |    3 +++
 2 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/dma-helpers.c b/dma-helpers.c
index f53a51f..a773489 100644
--- a/dma-helpers.c
+++ b/dma-helpers.c
@@ -234,3 +234,9 @@ uint64_t dma_buf_write(uint8_t *ptr, int32_t len, QEMUSGList *sg)
 {
     return dma_buf_rw(ptr, len, sg, 1);
 }
+
+void dma_acct_start(BlockDriverState *bs, BlockAcctCookie *cookie,
+                    QEMUSGList *sg, enum BlockAcctType type)
+{
+    bdrv_acct_start(bs, cookie, sg->size, type);
+}
diff --git a/dma.h b/dma.h
index 346ac4f..20e86d2 100644
--- a/dma.h
+++ b/dma.h
@@ -61,4 +61,7 @@ BlockDriverAIOCB *dma_bdrv_write(BlockDriverState *bs,
 uint64_t dma_buf_read(uint8_t *ptr, int32_t len, QEMUSGList *sg);
 uint64_t dma_buf_write(uint8_t *ptr, int32_t len, QEMUSGList *sg);
 
+void dma_acct_start(BlockDriverState *bs, BlockAcctCookie *cookie,
+                    QEMUSGList *sg, enum BlockAcctType type);
+
 #endif
-- 
1.7.7.1