[PATCH 1/5] trace/control: introduce trace_opt_parse_opts()

[Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>]

Add a function same as trace_opt_parse, but parameter is QemuOpts.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
 trace/control.h |  7 +++++++
 trace/control.c | 18 ++++++++++++------
 2 files changed, 19 insertions(+), 6 deletions(-)

diff --git a/trace/control.h b/trace/control.h
index 23b8393b29..fb898e2c4a 100644
--- a/trace/control.h
+++ b/trace/control.h
@@ -251,6 +251,13 @@ extern QemuOptsList qemu_trace_opts;
  */
 void trace_opt_parse(const char *optarg);
 
+/**
+ * Same as trace_opt_parse, but accept QemuOpts instead of options string.
+ *
+ * Releases @opts at the end.
+ */
+void trace_opt_parse_opts(QemuOpts *opts);
+
 /**
  * trace_get_vcpu_event_count:
  *
diff --git a/trace/control.c b/trace/control.c
index d5b68e846e..4bcbd96511 100644
--- a/trace/control.c
+++ b/trace/control.c
@@ -313,13 +313,8 @@ bool trace_init_backends(void)
     return true;
 }
 
-void trace_opt_parse(const char *optarg)
+void trace_opt_parse_opts(QemuOpts *opts)
 {
-    QemuOpts *opts = qemu_opts_parse_noisily(qemu_find_opts("trace"),
-                                             optarg, true);
-    if (!opts) {
-        exit(1);
-    }
     if (qemu_opt_get(opts, "enable")) {
         trace_enable_events(qemu_opt_get(opts, "enable"));
     }
@@ -330,6 +325,17 @@ void trace_opt_parse(const char *optarg)
     qemu_opts_del(opts);
 }
 
+void trace_opt_parse(const char *optarg)
+{
+    QemuOpts *opts = qemu_opts_parse_noisily(qemu_find_opts("trace"),
+                                             optarg, true);
+    if (!opts) {
+        exit(1);
+    }
+
+    trace_opt_parse_opts(opts);
+}
+
 uint32_t trace_get_vcpu_event_count(void)
 {
     return next_vcpu_id;
-- 
2.29.2