struct lttng_kernel_ring_buffer_ctx *ctx,
void *client_ctx,
unsigned long *o_begin, unsigned long *o_end,
unsigned long *o_old, size_t *before_hdr_pad)
{
struct lttng_kernel_ring_buffer_ctx *ctx,
void *client_ctx,
unsigned long *o_begin, unsigned long *o_end,
unsigned long *o_old, size_t *before_hdr_pad)
{