X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=include%2Flttng%2Fchannel.h;h=bb5bbcd382f47723eae934e94da69fc9eb11375e;hb=12dfd2b961163e9c076f49b37bc42334f3bc463e;hp=6ab0c7b62a5a0a5bd4ad867b91ce0996f42ef27b;hpb=1239a312e7e0e4c33948fdaf04e7637cb93c8b10;p=lttng-tools.git

diff --git a/include/lttng/channel.h b/include/lttng/channel.h
index 6ab0c7b62..bb5bbcd38 100644
--- a/include/lttng/channel.h
+++ b/include/lttng/channel.h
@@ -33,7 +33,7 @@ extern "C" {
 #define LTTNG_CHANNEL_ATTR_PADDING1        LTTNG_SYMBOL_NAME_LEN + 12
 struct lttng_channel_attr {
 	int overwrite;                      /* 1: overwrite, 0: discard */
-	uint64_t subbuf_size;               /* bytes */
+	uint64_t subbuf_size;               /* bytes, power of 2 */
 	uint64_t num_subbuf;                /* power of 2 */
 	unsigned int switch_timer_interval; /* usec */
 	unsigned int read_timer_interval;   /* usec */