extern void _lib_ring_buffer_pstrcpy(struct lttng_kernel_ring_buffer_backend *bufb,
size_t offset, const char *src, size_t len, int pad);
extern void _lib_ring_buffer_copy_from_user_inatomic(struct lttng_kernel_ring_buffer_backend *bufb,
size_t offset, const void *src,
size_t len, size_t pagecpy);
extern void _lib_ring_buffer_strcpy_from_user_inatomic(struct lttng_kernel_ring_buffer_backend *bufb,
extern void _lib_ring_buffer_pstrcpy(struct lttng_kernel_ring_buffer_backend *bufb,
size_t offset, const char *src, size_t len, int pad);
extern void _lib_ring_buffer_copy_from_user_inatomic(struct lttng_kernel_ring_buffer_backend *bufb,
size_t offset, const void *src,
size_t len, size_t pagecpy);
extern void _lib_ring_buffer_strcpy_from_user_inatomic(struct lttng_kernel_ring_buffer_backend *bufb,