commit c57c465800a9d193f9b41c97dbbbb6cd4fb08ff6
author Kevin Wolf <kwolf@redhat.com> Thu Nov 24 06:15:28 2011 -0500
committer Kevin Wolf <kwolf@redhat.com> Mon Dec 05 14:51:38 2011 +0100
tree 727a83dbfe34beff4c41c1e11a3b9cd97b39377e
parent e94d13873334b1880746feca59ce84c0eabc1021

dma-helpers: Add trace events

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>

dma-helpers.c

diff --git a/dma-helpers.c b/dma-helpers.c
index bdcd38c..9d6b6fa 100644
--- a/dma-helpers.c
+++ b/dma-helpers.c
@@ -9,6 +9,7 @@
 
 #include "dma.h"
 #include "block_int.h"
+#include "trace.h"
 
 void qemu_sglist_init(QEMUSGList *qsg, int alloc_hint)
 {
@@ -83,6 +84,8 @@
 
 static void dma_complete(DMAAIOCB *dbs, int ret)
 {
+    trace_dma_complete(dbs, ret, dbs->common.cb);
+
     dma_bdrv_unmap(dbs);
     if (dbs->common.cb) {
         dbs->common.cb(dbs->common.opaque, ret);
@@ -106,6 +109,8 @@
     target_phys_addr_t cur_addr, cur_len;
     void *mem;
 
+    trace_dma_bdrv_cb(dbs, ret);
+
     dbs->acb = NULL;
     dbs->sector_num += dbs->iov.size / 512;
     dma_bdrv_unmap(dbs);
@@ -130,6 +135,7 @@
     }
 
     if (dbs->iov.size == 0) {
+        trace_dma_map_wait(dbs);
         cpu_register_map_client(dbs, continue_after_map_failure);
         return;
     }
@@ -145,6 +151,8 @@
 {
     DMAAIOCB *dbs = container_of(acb, DMAAIOCB, common);
 
+    trace_dma_aio_cancel(dbs);
+
     if (dbs->acb) {
         BlockDriverAIOCB *acb = dbs->acb;
         dbs->acb = NULL;
@@ -168,6 +176,8 @@
 {
     DMAAIOCB *dbs = qemu_aio_get(&dma_aio_pool, bs, cb, opaque);
 
+    trace_dma_bdrv_io(dbs, bs, sector_num, to_dev);
+
     dbs->acb = NULL;
     dbs->bs = bs;
     dbs->sg = sg;