From: Namhyung Kim <namhyung@kernel.org>
Date: Thu, 16 Jan 2014 02:31:14 +0000 (+0900)
Subject: tools lib traceevent: Unregister handler when mac80211 plugin is unloaded
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=ec7c6debdd446ad2262f236d13964efae90ba0f7;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

tools lib traceevent: Unregister handler when mac80211 plugin is unloaded

The event handler should be unregistered when the plugin is unloaded
otherwise it'll try to access invalid memory.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Reviewed-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1389839478-5887-9-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---

diff --git a/tools/lib/traceevent/plugin_mac80211.c b/tools/lib/traceevent/plugin_mac80211.c
index 558a3b91c046..7e15a0f1c2fd 100644
--- a/tools/lib/traceevent/plugin_mac80211.c
+++ b/tools/lib/traceevent/plugin_mac80211.c
@@ -93,3 +93,10 @@ int PEVENT_PLUGIN_LOADER(struct pevent *pevent)
 				      drv_bss_info_changed, NULL);
 	return 0;
 }
+
+void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent)
+{
+	pevent_unregister_event_handler(pevent, -1, "mac80211",
+					"drv_bss_info_changed",
+					drv_bss_info_changed, NULL);
+}