[v6,09/19] migration/multifd: Remove total pages tracing

Commit Message

Fabiano Rosas Aug. 27, 2024, 5:45 p.m. UTC

The total_normal_pages and total_zero_pages elements are used only for
the end tracepoints of the multifd threads. These are not super useful
since they record per-channel numbers and are just the sum of all the
pages that are transmitted per-packet, for which we already have
tracepoints. Remove the totals from the tracing.

Reviewed-by: Peter Xu <[e-mail]>
Signed-off-by: Fabiano Rosas <[e-mail]>
---
 migration/multifd.c    | 12 ++----------
 migration/multifd.h    |  8 --------
 migration/trace-events |  4 ++--
 3 files changed, 4 insertions(+), 20 deletions(-)

Patch

diff --git a/migration/multifd.c b/migration/multifd.c
index 410b7e12cc..df8dfcc98f 100644
--- a/migration/multifd.c
+++ b/migration/multifd.c
@@ -453,8 +453,6 @@  void multifd_send_fill_packet(MultiFDSendParams *p)
     }
 
     p->packets_sent++;
-    p->total_normal_pages += pages->normal_num;
-    p->total_zero_pages += zero_num;
 
     trace_multifd_send(p->id, packet_num, pages->normal_num, zero_num,
                        p->flags, p->next_packet_size);
@@ -516,8 +514,6 @@  static int multifd_recv_unfill_packet(MultiFDRecvParams *p, Error **errp)
     p->next_packet_size = be32_to_cpu(packet->next_packet_size);
     p->packet_num = be64_to_cpu(packet->packet_num);
     p->packets_recved++;
-    p->total_normal_pages += p->normal_num;
-    p->total_zero_pages += p->zero_num;
 
     trace_multifd_recv(p->id, p->packet_num, p->normal_num, p->zero_num,
                        p->flags, p->next_packet_size);
@@ -1036,8 +1032,7 @@  out:
 
     rcu_unregister_thread();
     migration_threads_remove(thread);
-    trace_multifd_send_thread_end(p->id, p->packets_sent, p->total_normal_pages,
-                                  p->total_zero_pages);
+    trace_multifd_send_thread_end(p->id, p->packets_sent);
 
     return NULL;
 }
@@ -1561,7 +1556,6 @@  static void *multifd_recv_thread(void *opaque)
                 qemu_sem_wait(&p->sem_sync);
             }
         } else {
-            p->total_normal_pages += p->data->size / qemu_target_page_size();
             p->data->size = 0;
             /*
              * Order data->size update before clearing
@@ -1578,9 +1572,7 @@  static void *multifd_recv_thread(void *opaque)
     }
 
     rcu_unregister_thread();
-    trace_multifd_recv_thread_end(p->id, p->packets_recved,
-                                  p->total_normal_pages,
-                                  p->total_zero_pages);
+    trace_multifd_recv_thread_end(p->id, p->packets_recved);
 
     return NULL;
 }
diff --git a/migration/multifd.h b/migration/multifd.h
index c2ba4cad13..9175104aea 100644
--- a/migration/multifd.h
+++ b/migration/multifd.h
@@ -162,10 +162,6 @@  typedef struct {
     uint32_t next_packet_size;
     /* packets sent through this channel */
     uint64_t packets_sent;
-    /* non zero pages sent through this channel */
-    uint64_t total_normal_pages;
-    /* zero pages sent through this channel */
-    uint64_t total_zero_pages;
     /* buffers to send */
     struct iovec *iov;
     /* number of iovs used */
@@ -218,10 +214,6 @@  typedef struct {
     RAMBlock *block;
     /* ramblock host address */
     uint8_t *host;
-    /* non zero pages recv through this channel */
-    uint64_t total_normal_pages;
-    /* zero pages recv through this channel */
-    uint64_t total_zero_pages;
     /* buffers to recv */
     struct iovec *iov;
     /* Pages that are not zero */
diff --git a/migration/trace-events b/migration/trace-events
index 0b7c3324fb..0887cef912 100644
--- a/migration/trace-events
+++ b/migration/trace-events
@@ -134,7 +134,7 @@  multifd_recv_sync_main(long packet_num) "packet num %ld"
 multifd_recv_sync_main_signal(uint8_t id) "channel %u"
 multifd_recv_sync_main_wait(uint8_t id) "iter %u"
 multifd_recv_terminate_threads(bool error) "error %d"
-multifd_recv_thread_end(uint8_t id, uint64_t packets, uint64_t normal_pages, uint64_t zero_pages) "channel %u packets %" PRIu64 " normal pages %" PRIu64 " zero pages %" PRIu64
+multifd_recv_thread_end(uint8_t id, uint64_t packets) "channel %u packets %" PRIu64
 multifd_recv_thread_start(uint8_t id) "%u"
 multifd_send(uint8_t id, uint64_t packet_num, uint32_t normal_pages, uint32_t zero_pages, uint32_t flags, uint32_t next_packet_size) "channel %u packet_num %" PRIu64 " normal pages %u zero pages %u flags 0x%x next packet size %u"
 multifd_send_error(uint8_t id) "channel %u"
@@ -142,7 +142,7 @@  multifd_send_sync_main(long packet_num) "packet num %ld"
 multifd_send_sync_main_signal(uint8_t id) "channel %u"
 multifd_send_sync_main_wait(uint8_t id) "channel %u"
 multifd_send_terminate_threads(void) ""
-multifd_send_thread_end(uint8_t id, uint64_t packets, uint64_t normal_pages, uint64_t zero_pages) "channel %u packets %" PRIu64 " normal pages %"  PRIu64 " zero pages %"  PRIu64
+multifd_send_thread_end(uint8_t id, uint64_t packets) "channel %u packets %" PRIu64
 multifd_send_thread_start(uint8_t id) "%u"
 multifd_tls_outgoing_handshake_start(void *ioc, void *tioc, const char *hostname) "ioc=%p tioc=%p hostname=%s"
 multifd_tls_outgoing_handshake_error(void *ioc, const char *err) "ioc=%p err=%s"