X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=lib%2Fringbuffer%2Fconfig.h;h=67caba0646acffcfa1b99c354f8f1dc7dccc3980;hb=cf262f57baebeb3db47b4a44d0ab153b4d2abb2d;hp=bd5ba77d3ebcd50b7ce17b35c10f4702eb6463fb;hpb=886d51a3d7ed5fa6b41d7f19b3e14ae6c535a44c;p=lttng-modules.git

diff --git a/lib/ringbuffer/config.h b/lib/ringbuffer/config.h
index bd5ba77d..67caba06 100644
--- a/lib/ringbuffer/config.h
+++ b/lib/ringbuffer/config.h
@@ -27,6 +27,7 @@
 #include <linux/types.h>
 #include <linux/percpu.h>
 #include "../align.h"
+#include "../../lttng-tracer-core.h"
 
 struct lib_ring_buffer;
 struct channel;
@@ -206,7 +207,7 @@ struct lib_ring_buffer_ctx {
  * @ctx: ring buffer context to initialize
  * @chan: channel
  * @priv: client private data
- * @data_size: size of record data payload
+ * @data_size: size of record data payload. It must be greater than 0.
  * @largest_align: largest alignment within data payload types
  * @cpu: processor id
  */
@@ -241,6 +242,10 @@ void lib_ring_buffer_ctx_init(struct lib_ring_buffer_ctx *ctx,
 #define	RING_BUFFER_RFLAG_FULL_TSC		(1U << 0)
 #define RING_BUFFER_RFLAG_END			(1U << 1)
 
+#ifndef LTTNG_TRACER_CORE_H
+#error "lttng-tracer-core.h is needed for RING_BUFFER_ALIGN define"
+#endif
+
 /*
  * We need to define RING_BUFFER_ALIGN_ATTR so it is known early at
  * compile-time. We have to duplicate the "config->align" information and the