qapi: introduce x-query-opcount QMP command

This is a counterpart to the HMP "info opcount" command. It is being
added with an "x-" prefix because this QMP command is intended as an
ad hoc debugging tool and will thus not be modelled in QAPI as fully
structured data, nor will it have long term guaranteed stability.
The existing HMP command is rewritten to call the QMP command.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c
index 4212645cb6..c0620b4cc7 100644
--- a/accel/tcg/cpu-exec.c
+++ b/accel/tcg/cpu-exec.c
@@ -1066,4 +1066,18 @@ HumanReadableText *qmp_x_query_jit(Error **errp)
     return human_readable_text_from_str(buf);
 }
 
+HumanReadableText *qmp_x_query_opcount(Error **errp)
+{
+    g_autoptr(GString) buf = g_string_new("");
+
+    if (!tcg_enabled()) {
+        error_setg(errp, "Opcode count information is only available with accel=tcg");
+        return NULL;
+    }
+
+    dump_opcount_info(buf);
+
+    return human_readable_text_from_str(buf);
+}
+
 #endif /* !CONFIG_USER_ONLY */