X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=lttng-abi.c;h=0f01d3d7df558b3ad6515edddc5006d865693d8b;hb=de9b16cda94d0e1cab5f9980f2a699e2b2fb93a1;hp=bdc6c7660601761bc42b999a3e99b5515916e6e2;hpb=afbb7f1f732082fea302d5c821b8b67fae445e2b;p=lttng-modules.git

diff --git a/lttng-abi.c b/lttng-abi.c
index bdc6c766..0f01d3d7 100644
--- a/lttng-abi.c
+++ b/lttng-abi.c
@@ -629,6 +629,18 @@ long lttng_metadata_ring_buffer_ioctl(struct file *filp,
 			goto err;
 		break;
 	}
+	case RING_BUFFER_SNAPSHOT:
+	{
+		/*
+		 * Force the buffer to quiescent so the ring buffer
+		 * don't attempt to perform a SWITCH_FLUSH, which would
+		 * desynchronize the client accounting of the amount of
+		 * data available in the buffer from the ring buffer
+		 * view.
+		 */
+		buf->quiescent = true;
+		break;
+	}
 	default:
 		break;
 	}
@@ -684,6 +696,33 @@ 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;
+	}
+	case RING_BUFFER_SNAPSHOT:
+	{
+		/*
+		 * Force the buffer to quiescent so the ring buffer
+		 * don't attempt to perform a SWITCH_FLUSH, which would
+		 * desynchronize the client accounting of the amount of
+		 * data available in the buffer from the ring buffer
+		 * view.
+		 */
+		buf->quiescent = true;
+		break;
+	}
 	default:
 		break;
 	}