Add explicit vmalloc_sync_all

[lttng-modules.git] / ltt-ring-buffer-client.h

diff --git a/ltt-ring-buffer-client.h b/ltt-ring-buffer-client.h
index 5ce710cef7285c3da0000d11012ad5fd72f416d1..e889c571a5e81f4faba1490c92950fd05074b55b 100644 (file)
--- a/ltt-ring-buffer-client.h
+++ b/ltt-ring-buffer-client.h
@@ -10,6 +10,7 @@
 
 #include <linux/module.h>
 #include <linux/types.h>
+#include <linux/vmalloc.h>     /* for vmalloc_sync_all */
 #include "wrapper/trace-clock.h"
 #include "ltt-events.h"
 #include "ltt-tracer.h"
@@ -198,6 +199,11 @@ static struct ltt_transport ltt_relay_transport = {
 
 static int __init ltt_ring_buffer_client_init(void)
 {
+       /*
+        * This vmalloc sync all also takes care of the lib ring buffer
+        * vmalloc'd module pages when it is built as a module into LTTng.
+        */
+       vmalloc_sync_all();
        printk(KERN_INFO "LTT : ltt ring buffer client init\n");
        ltt_transport_register(&ltt_relay_transport);
        return 0;