X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=lttng-context-prio.c;h=1ee3a54daf2c33b331a1a3d97e247478b8a65679;hb=80996790fa42072d6525f2adb9a910312077bef6;hp=d159e02d4dbf270bcd3059e31d6fc41e88120b31;hpb=979133c547728a541098dd7051e1e72ab7631788;p=lttng-modules.git

diff --git a/lttng-context-prio.c b/lttng-context-prio.c
index d159e02d..1ee3a54d 100644
--- a/lttng-context-prio.c
+++ b/lttng-context-prio.c
@@ -13,6 +13,7 @@
 #include "ltt-events.h"
 #include "wrapper/ringbuffer/frontend_types.h"
 #include "wrapper/vmalloc.h"
+#include "wrapper/kallsyms.h"
 #include "ltt-tracer.h"
 
 static
@@ -20,7 +21,7 @@ int (*wrapper_task_prio_sym)(struct task_struct *t);
 
 int wrapper_task_prio_init(void)
 {
-	wrapper_task_prio_sym = (void *) kallsyms_lookup_name("task_prio");
+	wrapper_task_prio_sym = (void *) kallsyms_lookup_funcptr("task_prio");
 	if (!wrapper_task_prio_sym) {
 		printk(KERN_WARNING "LTTng: task_prio symbol lookup failed.\n");
 		return -EINVAL;
@@ -63,7 +64,11 @@ int lttng_add_prio_to_ctx(struct lttng_ctx **ctx)
 
 	field = lttng_append_context(ctx);
 	if (!field)
-		return ret;
+		return -ENOMEM;
+	if (lttng_find_context(*ctx, "prio")) {
+		lttng_remove_context_field(ctx, field);
+		return -EEXIST;
+	}
 	field->event_field.name = "prio";
 	field->event_field.type.atype = atype_integer;
 	field->event_field.type.u.basic.integer.size = sizeof(int) * CHAR_BIT;