migration: Add multifd traces for start/end thread

We want to know how many pages/packets each channel has sent.  Add
counters for those.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

--
sort trace-events (dave)

1 files changed, 22 insertions, 0 deletions

diff --git a/migration/ram.c b/migration/ram.c
index fd144fd..5c040e3 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -570,6 +570,11 @@ typedef struct {
     uint32_t flags;
     /* global number of generated multifd packets */
     uint64_t packet_num;
+    /* thread local variables */
+    /* packets sent through this channel */
+    uint64_t num_packets;
+    /* pages sent through this channel */
+    uint64_t num_pages;
 }  MultiFDSendParams;
 
 typedef struct {
@@ -600,6 +605,11 @@ typedef struct {
     uint32_t flags;
     /* global number of generated multifd packets */
     uint64_t packet_num;
+    /* thread local variables */
+    /* packets sent through this channel */
+    uint64_t num_packets;
+    /* pages sent through this channel */
+    uint64_t num_pages;
 } MultiFDRecvParams;
 
 static int multifd_send_initial_packet(MultiFDSendParams *p, Error **errp)
@@ -856,9 +866,13 @@ static void *multifd_send_thread(void *opaque)
     MultiFDSendParams *p = opaque;
     Error *local_err = NULL;
 
+    trace_multifd_send_thread_start(p->id);
+
     if (multifd_send_initial_packet(p, &local_err) < 0) {
         goto out;
     }
+    /* initial packet */
+    p->num_packets = 1;
 
     while (true) {
         qemu_mutex_lock(&p->mutex);
@@ -880,6 +894,8 @@ out:
     p->running = false;
     qemu_mutex_unlock(&p->mutex);
 
+    trace_multifd_send_thread_end(p->id, p->num_packets, p->num_pages);
+
     return NULL;
 }
 
@@ -1007,6 +1023,8 @@ static void *multifd_recv_thread(void *opaque)
     Error *local_err = NULL;
     int ret;
 
+    trace_multifd_recv_thread_start(p->id);
+
     while (true) {
         qemu_mutex_lock(&p->mutex);
         if (false)  {
@@ -1029,6 +1047,8 @@ static void *multifd_recv_thread(void *opaque)
     p->running = false;
     qemu_mutex_unlock(&p->mutex);
 
+    trace_multifd_recv_thread_end(p->id, p->num_packets, p->num_pages);
+
     return NULL;
 }
 
@@ -1094,6 +1114,8 @@ void multifd_recv_new_channel(QIOChannel *ioc)
     }
     p->c = ioc;
     object_ref(OBJECT(ioc));
+    /* initial packet */
+    p->num_packets = 1;
 
     p->running = true;
     qemu_thread_create(&p->thread, p->name, multifd_recv_thread, p,