STRUCT HL_TS_BUFF(9)

💖 struct hl_ts_buff(9) 💖

okay so bestie, welcome to the Kernel API Manual entry for struct hl_ts_buff — literally a timestamp buffer and its whole entire personality. it's a struct, it's small, it's iconic, let's get into it 🎀

---

✨ NAME ✨

struct hl_ts_buff — describes a timestamp buffer. that's it. that's the whole vibe. 💅

---

🌸 SYNOPSIS 🌸

bestie look at this little guy, only three members, lowkey minimal queen behavior:

struct hl_ts_buff {
    void *kernel_buff_address;
    void *user_buff_address;
    u32 kernel_buff_size;
 };

---

🎀 Members 🎀

one bullet per member, no skips, we stan a complete list 🫶

• kernel_buff_address — holds the internal buffer's kernel virtual address. yes, the internal one, the kernel-side address, okurrr 🌟
• user_buff_address — holds the user buffer's kernel virtual address. not the user address itself, the kernel virtual address of the user buffer — subtle but important, don't mix them up bestie 😭
• kernel_buff_size — holds the internal kernel buffer size. it's a u32, so it's the internal kernel buffer size and that's the whole note 🍓

---

🦋 SEE ALSO 🦋

okay this list is LONG, like genuinely, so buckle up. it lives in the kernel file ./drivers/accel/habanalabs/common/habanalabs.h and here is every single friend it points at, no cap, all of them:

enum hl_mmu_page_table_location(9), struct iterate_module_ctx(9), struct hl_gen_wait_properties(9), struct pgt_info(9), enum hl_pci_match_mode(9), enum hl_fw_component(9), enum hl_fw_types(9), enum hl_queue_type(9), struct hw_queue_properties(9), enum vm_type(9), enum mmu_op_flags(9), enum hl_device_hw_state(9), struct hl_mmu_properties(9), struct hl_hints_range(9), struct asic_fixed_properties(9), struct hl_fence(9), struct hl_cs_compl(9), struct hl_mem_mgr(9), struct hl_mem_mgr_fini_stats(9), struct hl_mmap_mem_buf_behavior(9), struct hl_mmap_mem_buf(9), struct hl_cb(9), struct hl_sync_stream_properties(9), struct hl_encaps_signals_mgr(9), struct hl_hw_queue(9), struct hl_cq(9), struct hl_ts_free_jobs(9), struct hl_user_interrupt(9), struct timestamp_reg_free_node(9), struct hl_user_pending_interrupt(9), struct hl_eq(9), struct hl_dec(9), enum hl_asic_type(9), enum hl_pm_mng_profile(9), enum hl_pll_frequency(9), struct pci_mem_region(9), struct static_fw_load_mgr(9), struct fw_response(9), struct dynamic_fw_load_mgr(9), struct pre_fw_load_props(9), struct fw_image_props(9), struct fw_load_mgr(9), struct engines_data(9), struct hl_asic_funcs(9), enum hl_va_range_type(9), struct hl_va_range(9), struct hl_cs_counters_atomic(9), struct hl_dmabuf_priv(9), struct hl_cs_outcome(9), struct hl_cs_outcome_store(9), struct hl_ctx(9), struct hl_ctx_mgr(9), struct hl_userptr(9), struct hl_cs(9), struct hl_cs_job(9), struct hl_cs_parser(9), struct hl_vm_hash_node(9), struct hl_vm_hw_block_list_node(9), struct hl_vm_phys_pg_pack(9), struct hl_vm_va_block(9), struct hl_vm(9), struct hl_debug_params(9), struct hl_notifier_event(9), struct hl_fpriv(9), struct hl_info_list(9), struct hl_debugfs_entry(9), struct hl_dbg_device_entry(9), struct hl_debugfs_cfg_access_entry(9), struct hl_debugfs_cfg_access(9), struct hl_hw_obj_name_entry(9), struct hl_mon_state_dump(9), struct hl_sync_to_engine_map_entry(9), struct hl_sync_to_engine_map(9), struct hl_state_dump_specs_funcs(9), struct hl_state_dump_specs(9), struct hl_device_reset_work(9), struct hl_mmu_priv(9), struct hl_mmu_per_hop_info(9), struct hl_mmu_hop_info(9), struct hl_hr_mmu_funcs(9), struct hl_mmu_funcs(9), struct hl_prefetch_work(9), struct multi_cs_completion(9), struct multi_cs_data(9), struct hl_clk_throttle_timestamp(9), struct hl_clk_throttle(9), struct user_mapped_block(9), struct cs_timeout_info(9), struct undefined_opcode_info(9), struct page_fault_info(9), struct razwi_info(9), struct hw_err_info(9), struct fw_err_info(9), struct engine_err_info(9), struct hl_error_info(9), struct hl_reset_info(9), struct eq_heartbeat_debug_info(9), struct hl_device(9), struct hl_cs_encaps_sig_handle(9), struct hl_info_fw_err_info(9), hl_ioctl_t(9), struct hl_ioctl_desc(9), hl_get_sg_info(9), hl_mem_area_inside_range(9), hl_mem_area_crosses_range(9)

like I said. long. but we read them all, respectfully, every single one 🧚

---

no warnings on this one bestie — it's a plain describes-a-thing struct, not a "this will explode" situation. still, read the members carefully before you go touching buffer addresses, mwah 😘

---

and that's the page!! mwah 💜 this came out of ./drivers/accel/habanalabs/common, dated October 2026, and it's struct hl_ts_buff(9) from the Kernel API Manual — go be gorgeous with your timestamps, bestie, you ate 🔥👑