memset(&__lttng_ctx, 0, sizeof(__lttng_ctx)); \
__lttng_ctx.struct_size = sizeof(struct lttng_ust_stack_ctx); \
__lttng_ctx.event_recorder = __event_recorder; \
- __lttng_ctx.chan_ctx = tp_rcu_dereference(__chan->ctx); \
__lttng_ctx.event_ctx = tp_rcu_dereference(__event_recorder->ctx); \
lib_ring_buffer_ctx_init(&__ctx, __chan->chan, &__lttng_ctx, __event_len, \
__event_align, -1, __chan->handle); \