int (*event_reserve)(struct lttng_kernel_ring_buffer_ctx *ctx);
void (*event_commit)(struct lttng_kernel_ring_buffer_ctx *ctx);
void (*event_write)(struct lttng_kernel_ring_buffer_ctx *ctx, const void *src,
int (*event_reserve)(struct lttng_kernel_ring_buffer_ctx *ctx);
void (*event_commit)(struct lttng_kernel_ring_buffer_ctx *ctx);
void (*event_write)(struct lttng_kernel_ring_buffer_ctx *ctx, const void *src,