X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fcommon%2Fkernel-consumer%2Fkernel-consumer.c;h=c7c1413104b4a0dec3b34e63fc8e1efbf6b8242e;hp=3554b8f05ec98fe5ddfeb0c7969552f778efdf69;hb=001b7e62c1cb15f9d6cb835647b81028d56cf2d8;hpb=e99f9447b5be2deee54dde16b404a12b3fcd88ee

diff --git a/src/common/kernel-consumer/kernel-consumer.c b/src/common/kernel-consumer/kernel-consumer.c
index 3554b8f05..c7c141310 100644
--- a/src/common/kernel-consumer/kernel-consumer.c
+++ b/src/common/kernel-consumer/kernel-consumer.c
@@ -196,6 +196,7 @@ int lttng_kconsumer_snapshot_channel(uint64_t key, char *path,
 				ERR("sending streams sent to relayd");
 				goto end_unlock;
 			}
+			channel->streams_sent_to_relayd = true;
 		}
 
 		ret = kernctl_buffer_flush(stream->wait_fd);
@@ -741,6 +742,19 @@ int lttng_kconsumer_recv_cmd(struct lttng_consumer_local_data *ctx,
 				consumer_stream_free(new_stream);
 				goto end_nosignal;
 			}
+
+			/*
+			 * If adding an extra stream to an already
+			 * existing channel (e.g. cpu hotplug), we need
+			 * to send the "streams_sent" command to relayd.
+			 */
+			if (channel->streams_sent_to_relayd) {
+				ret = consumer_send_relayd_streams_sent(
+						new_stream->net_seq_idx);
+				if (ret < 0) {
+					goto end_nosignal;
+				}
+			}
 		}
 
 		/* Get the right pipe where the stream will be sent. */
@@ -834,6 +848,7 @@ int lttng_kconsumer_recv_cmd(struct lttng_consumer_local_data *ctx,
 			if (ret < 0) {
 				goto end_nosignal;
 			}
+			channel->streams_sent_to_relayd = true;
 		}
 		break;
 	}