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];
};