wrapper: remove vmalloc_sync_all

[lttng-modules.git] / lttng-events.c

diff --git a/lttng-events.c b/lttng-events.c
index 1ca4d519b817730ea03b5c88da307ee40a36c10d..aa0f2e2abc3fa9632f16353f374d5aa5bb2ad8dd 100644 (file)
--- a/lttng-events.c
+++ b/lttng-events.c
@@ -26,11 +26,10 @@
 #include <wrapper/file.h>
 #include <linux/jhash.h>
 #include <linux/uaccess.h>
-#include <linux/vmalloc.h>
 #include <linux/uuid.h>
 #include <linux/dmi.h>
+#include <linux/vmalloc.h>
 
-#include <wrapper/vmalloc.h>   /* for wrapper_vmalloc_sync_all() */
 #include <wrapper/random.h>
 #include <wrapper/tracepoint.h>
 #include <wrapper/list.h>
@@ -129,7 +128,8 @@ struct lttng_session *lttng_session_create(void)
        int i;
 
        mutex_lock(&sessions_mutex);
-       session = lttng_kvzalloc(sizeof(struct lttng_session), GFP_KERNEL);
+       session = kvzalloc_node(sizeof(struct lttng_session), GFP_KERNEL,
+                               NUMA_NO_NODE);
        if (!session)
                goto err;
        INIT_LIST_HEAD(&session->chan);
@@ -172,7 +172,7 @@ struct lttng_session *lttng_session_create(void)
 err_free_cache:
        kfree(metadata_cache);
 err_free_session:
-       lttng_kvfree(session);
+       kvfree(session);
 err:
        mutex_unlock(&sessions_mutex);
        return NULL;
@@ -225,7 +225,7 @@ void lttng_session_destroy(struct lttng_session *session)
        kref_put(&session->metadata_cache->refcount, metadata_cache_destroy);
        list_del(&session->list);
        mutex_unlock(&sessions_mutex);
-       lttng_kvfree(session);
+       kvfree(session);
 }
 
 int lttng_session_statedump(struct lttng_session *session)
@@ -2793,22 +2793,10 @@ end:
  * @transport: transport structure
  *
  * Registers a transport which can be used as output to extract the data out of
- * LTTng. The module calling this registration function must ensure that no
- * trap-inducing code will be executed by the transport functions. E.g.
- * vmalloc_sync_all() must be called between a vmalloc and the moment the memory
- * is made visible to the transport function. This registration acts as a
- * vmalloc_sync_all. Therefore, only if the module allocates virtual memory
- * after its registration must it synchronize the TLBs.
+ * LTTng.
  */
 void lttng_transport_register(struct lttng_transport *transport)
 {
-       /*
-        * Make sure no page fault can be triggered by the module about to be
-        * registered. We deal with this here so we don't have to call
-        * vmalloc_sync_all() in each module's init.
-        */
-       wrapper_vmalloc_sync_all();
-
        mutex_lock(&sessions_mutex);
        list_add_tail(&transport->node, &lttng_transport_list);
        mutex_unlock(&sessions_mutex);