Add extended info to liblttng-ctl's struct lttng_channel

[lttng-tools.git] / include / lttng / channel.h

diff --git a/include/lttng/channel.h b/include/lttng/channel.h
index 6ab0c7b62a5a0a5bd4ad867b91ce0996f42ef27b..e770f6835a491f35c3dbdea7b4705ad65afefbdc 100644 (file)
--- 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 */
@@ -43,6 +43,12 @@ struct lttng_channel_attr {
        uint64_t tracefile_count;           /* number of tracefiles */
        /* LTTng 2.3 padding limit */
        unsigned int live_timer_interval;   /* usec */
+       /* LTTng 2.7 padding limit */
+       uint32_t align_to_64;
+       union {
+               uint64_t padding;
+               void *ptr;
+       } extended;
 
        char padding[LTTNG_CHANNEL_ATTR_PADDING1];
 };