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Fix: update writeback instrumentation for kernel 4.0+
[lttng-modules.git]
/
lttng-events.c
diff --git
a/lttng-events.c
b/lttng-events.c
index b2d0d754907d863903566921d0ac3521619978df..135c8c527123acd43266c7191148d9bc314121a8 100644
(file)
--- a/
lttng-events.c
+++ b/
lttng-events.c
@@
-379,8
+379,14
@@
struct lttng_event *lttng_event_create(struct lttng_channel *chan,
*/
list_for_each_entry(event, &chan->session->events, list) {
if (!strcmp(event->desc->name, event_param->name)) {
*/
list_for_each_entry(event, &chan->session->events, list) {
if (!strcmp(event->desc->name, event_param->name)) {
- ret = -EEXIST;
- goto exist;
+ /*
+ * Allow events with the same name to appear in
+ * different channels.
+ */
+ if (event->chan == chan) {
+ ret = -EEXIST;
+ goto exist;
+ }
}
}
event = kmem_cache_zalloc(event_cache, GFP_KERNEL);
}
}
event = kmem_cache_zalloc(event_cache, GFP_KERNEL);
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