From: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Date: Mon, 18 Nov 2019 20:12:20 +0000 (-0500)
Subject: Fix: update apps on untrack only when session is active
X-Git-Tag: v2.11.1~33
X-Git-Url: http://git.liburcu.org/?p=lttng-tools.git;a=commitdiff_plain;h=606d9182a1cc67f309b1b1f1515e08b0313f4e4e

Fix: update apps on untrack only when session is active

This mimics what is done on the track side.

Fixes #1210

Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
---

diff --git a/src/bin/lttng-sessiond/trace-ust.c b/src/bin/lttng-sessiond/trace-ust.c
index cc166fd6f..fc3f3a7a0 100644
--- a/src/bin/lttng-sessiond/trace-ust.c
+++ b/src/bin/lttng-sessiond/trace-ust.c
@@ -883,6 +883,7 @@ end:
 int trace_ust_untrack_pid(struct ltt_ust_session *session, int pid)
 {
 	int retval = LTTNG_OK;
+	bool should_update_apps = false;
 
 	if (pid == -1) {
 		/* Create empty tracker, replace old tracker. */
@@ -899,7 +900,7 @@ int trace_ust_untrack_pid(struct ltt_ust_session *session, int pid)
 		fini_pid_tracker(&tmp_tracker);
 
 		/* Remove session from all applications */
-		ust_app_global_update_all(session);
+		should_update_apps = true;
 	} else {
 		int ret;
 		struct ust_app *app;
@@ -918,9 +919,12 @@ int trace_ust_untrack_pid(struct ltt_ust_session *session, int pid)
 		/* Remove session from application. */
 		app = ust_app_find_by_pid(pid);
 		if (app) {
-			ust_app_global_update(session, app);
+			should_update_apps = true;
 		}
 	}
+	if (should_update_apps && session->active) {
+		ust_app_global_update_all(session);
+	}
 end:
 	return retval;
 }