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Commit 11e99c55 authored by Namhyung Kim's avatar Namhyung Kim Committed by Arnaldo Carvalho de Melo
Browse files

tools lib traceevent: Unregister handler when kmem plugin is unloaded 



The kmem handlers should be unregistered when the plugin is unloaded
otherwise they'll try to access invalid memory.

Signed-off-by: default avatarNamhyung Kim <namhyung@kernel.org>
Reviewed-by: default avatarJiri Olsa <jolsa@redhat.com>
Acked-by: default avatarSteven 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/1389839478-5887-6-git-send-email-namhyung@kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 4061edaa

tools/lib/traceevent/plugin_kmem.c

+22 −0
Original line number Original line Diff line number Diff line
@@ -70,3 +70,25 @@ int PEVENT_PLUGIN_LOADER(struct pevent *pevent) 
				      call_site_handler, NULL);

				      call_site_handler, NULL);

	return 0;

	return 0;

}

}



void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent)

{

	pevent_unregister_event_handler(pevent, -1, "kmem", "kfree",

					call_site_handler, NULL);



	pevent_unregister_event_handler(pevent, -1, "kmem", "kmalloc",

					call_site_handler, NULL);



	pevent_unregister_event_handler(pevent, -1, "kmem", "kmalloc_node",

					call_site_handler, NULL);



	pevent_unregister_event_handler(pevent, -1, "kmem", "kmem_cache_alloc",

					call_site_handler, NULL);



	pevent_unregister_event_handler(pevent, -1, "kmem",

					"kmem_cache_alloc_node",

					call_site_handler, NULL);



	pevent_unregister_event_handler(pevent, -1, "kmem", "kmem_cache_free",

					call_site_handler, NULL);

}