From: "Emilio G. Cota" <cota@braap.org>

Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 qemu-options.hx | 10 ++++++++++
 vl.c            |  3 +++
 2 files changed, 13 insertions(+)

diff --git a/qemu-options.hx b/qemu-options.hx
index 5515dfa..d66ab1b 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -3953,6 +3953,16 @@ Dump json-encoded vmstate information for current machine type to file
 in @var{file}
 ETEXI
 
+DEF("enable-sync-profile", 0, QEMU_OPTION_enable_sync_profile,
+    "-enable-sync-profile\n"
+    "                enable synchronization profiling\n",
+    QEMU_ARCH_ALL)
+STEXI
+@item -enable-sync-profile
+@findex -enable-sync-profile
+Enable synchronization profiling.
+ETEXI
+
 STEXI
 @end table
 ETEXI
diff --git a/vl.c b/vl.c
index 7055df3..d2af8ed 100644
--- a/vl.c
+++ b/vl.c
@@ -3959,6 +3959,9 @@ int main(int argc, char **argv, char **envp)
                     exit(1);
                 }
                 break;
+            case QEMU_OPTION_enable_sync_profile:
+                qsp_enable();
+                break;
             case QEMU_OPTION_nodefconfig:
             case QEMU_OPTION_nouserconfig:
                 /* Nothing to be parsed here. Especially, do not error out below. */
-- 
1.8.3.1