Update comments regarding the power of 2 constraint on sub-buffer sizes

[lttng-tools.git] / src / bin / lttng-sessiond / lttng-ust-abi.h

diff --git a/src/bin/lttng-sessiond/lttng-ust-abi.h b/src/bin/lttng-sessiond/lttng-ust-abi.h
index 81b61492a8ff1144d1c7f17af42fd62d569e0c82..27771e25da55d29ecca9b4a272f16212db8d54d4 100644 (file)
--- a/src/bin/lttng-sessiond/lttng-ust-abi.h
+++ b/src/bin/lttng-sessiond/lttng-ust-abi.h
@@ -166,7 +166,7 @@ struct lttng_ust_context {
  */
 #define LTTNG_UST_CHANNEL_ATTR_PADDING (LTTNG_UST_SYM_NAME_LEN + 32)
 struct lttng_ust_channel_attr {
-       uint64_t subbuf_size;                   /* bytes */
+       uint64_t subbuf_size;                   /* bytes, power of 2 */
        uint64_t num_subbuf;                    /* power of 2 */
        int overwrite;                          /* 1: overwrite, 0: discard */
        unsigned int switch_timer_interval;     /* usec */