X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=lttng-abi.c;h=cc3d4b5bf37765a50f8b8860b28b22e9639a241e;hb=e795690f41343b02cb6e78aa5edfe126c072a53c;hp=b51434a17a9e28aee7de71f24437511f31e3bb55;hpb=4ce9f32b8ec6ff1de14d734607a5f4a20fb743e5;p=lttng-modules.git

diff --git a/lttng-abi.c b/lttng-abi.c
index b51434a1..cc3d4b5b 100644
--- a/lttng-abi.c
+++ b/lttng-abi.c
@@ -739,6 +739,21 @@ long lttng_metadata_ring_buffer_compat_ioctl(struct file *filp,
 		 */
 		return -ENOSYS;
 	}
+	case RING_BUFFER_FLUSH:
+	{
+		struct lttng_metadata_stream *stream = filp->private_data;
+		struct lib_ring_buffer *buf = stream->priv;
+		struct channel *chan = buf->backend.chan;
+
+		/*
+		 * Before doing the actual ring buffer flush, write up to one
+		 * packet of metadata in the ring buffer.
+		 */
+		ret = lttng_metadata_output_channel(stream, chan);
+		if (ret < 0)
+			goto err;
+		break;
+	}
 	default:
 		break;
 	}
@@ -993,6 +1008,7 @@ int lttng_abi_create_event(struct file *channel_file,
 	/* The event holds a reference on the channel */
 	if (atomic_long_add_unless(&channel_file->f_count,
 		1, INT_MAX) == INT_MAX) {
+		ret = -EOVERFLOW;
 		goto refcount_error;
 	}
 	if (event_param->instrumentation == LTTNG_KERNEL_TRACEPOINT