Fix: add "flush empty" ioctl for stream intersection

[lttng-modules.git] / lib / ringbuffer / ring_buffer_vfs.c

diff --git a/lib/ringbuffer/ring_buffer_vfs.c b/lib/ringbuffer/ring_buffer_vfs.c
index f1a8bab781cd2f5829c552067eefdb2365c1f2e7..4b1aa38ea674f18184aa4a684a0a6c9bc4051fed 100644 (file)
--- a/lib/ringbuffer/ring_buffer_vfs.c
+++ b/lib/ringbuffer/ring_buffer_vfs.c
@@ -270,6 +270,9 @@ long lib_ring_buffer_ioctl(struct file *filp, unsigned int cmd,
        case RING_BUFFER_FLUSH:
                lib_ring_buffer_switch_remote(buf);
                return 0;
+       case RING_BUFFER_FLUSH_EMPTY:
+               lib_ring_buffer_switch_remote_empty(buf);
+               return 0;
        default:
                return -ENOIOCTLCMD;
        }
@@ -415,6 +418,9 @@ long lib_ring_buffer_compat_ioctl(struct file *filp, unsigned int cmd,
        case RING_BUFFER_COMPAT_FLUSH:
                lib_ring_buffer_switch_remote(buf);
                return 0;
+       case RING_BUFFER_COMPAT_FLUSH_EMPTY:
+               lib_ring_buffer_switch_remote_empty(buf);
+               return 0;
        default:
                return -ENOIOCTLCMD;
        }