-#define LTTNG_KERNEL_METADATA \
- _IOW(0xF6, 0x50, struct lttng_kernel_channel)
-#define LTTNG_KERNEL_CHANNEL \
- _IOW(0xF6, 0x51, struct lttng_kernel_channel)
-#define LTTNG_KERNEL_SESSION_START _IO(0xF6, 0x52)
-#define LTTNG_KERNEL_SESSION_STOP _IO(0xF6, 0x53)
+#define LTTNG_KERNEL_METADATA \
+ _IOW(0xF6, 0x50, struct lttng_channel_attr)
+
+#define LTTNG_KERNEL_CHANNEL \
+ _IOW(0xF6, 0x51, struct lttng_channel_attr)
+
+#define LTTNG_KERNEL_SESSION_START _IO(0xF6, 0x52)
+#define LTTNG_KERNEL_SESSION_STOP _IO(0xF6, 0x53)