X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=lttng-context-prio.c;h=c786f5d312d644094da09479e61b9991a8e838f5;hb=refs%2Fheads%2Fstable-2.12;hp=8a0839cf04d73f40eecaefda1784c473d66dceaf;hpb=241ae9a8fb62c3ce467d244e280062c24e73eb7a;p=lttng-modules.git

diff --git a/lttng-context-prio.c b/lttng-context-prio.c
index 8a0839cf..c786f5d3 100644
--- a/lttng-context-prio.c
+++ b/lttng-context-prio.c
@@ -1,23 +1,10 @@
-/*
+/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
+ *
  * lttng-context-prio.c
  *
  * LTTng priority context.
  *
  * Copyright (C) 2009-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; only
- * version 2.1 of the License.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #include <linux/module.h>
@@ -42,6 +29,19 @@ int wrapper_task_prio_init(void)
 	return 0;
 }
 
+/*
+ * Canary function to check for 'task_prio()' at compile time.
+ *
+ * From 'include/linux/sched.h':
+ *
+ *   extern int task_prio(const struct task_struct *p);
+ */
+__attribute__((unused)) static
+int __canary__task_prio(const struct task_struct *p)
+{
+	return task_prio(p);
+}
+
 static
 size_t prio_get_size(size_t offset)
 {
@@ -102,7 +102,7 @@ int lttng_add_prio_to_ctx(struct lttng_ctx **ctx)
 	field->record = prio_record;
 	field->get_value = prio_get_value;
 	lttng_context_update(*ctx);
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_prio_to_ctx);