persistent_id_show(9)

💖 NAME 💖

okay so like, hi bestie, welcome to persistent_id_show(9) — that's the page, and you're reading it in the Kernel API Manual (that's the manual it lives in, fyi). This function is the SysFS callback for persisten ID display ✨ (yes, "persisten", that's literally how it's spelled on the page, don't come for me).

---

🦋 SYNOPSIS 🦋

ssize_t persistent_id_show (struct device *dev , struct device_attribute
*attr , char *buf );

like... it's giving "three args, one ssize_t return, very sysfs-core" 💅

---

🌸 ARGUMENTS 🌸

• dev — class device. that's the device bestie, the whole point 🫶
• attr — Device attributes.
• buf — Buffer to copy. this is where the goods go 🎀

---

⭐ RETURN ⭐

sysfs_emit return after copying persistent ID of the of the specific device. (yes, double "of the" — canon. 😭 not me pointing it out. anyway: you get whatever sysfs_emit hands back after the copy happens.)

---

👑 SEE ALSO 👑

first up, the actual kernel file it lives in:

• Kernel file ./drivers/scsi/mpi3mr/mpi3mr_app.c

and then the full squad — every single one, no skipping, I promised 💜:

• mpi3mr_alloc_trace_buffer(9), mpi3mr_alloc_diag_bufs(9), mpi3mr_issue_diag_buf_post(9), mpi3mr_post_diag_bufs(9), mpi3mr_issue_diag_buf_release(9), mpi3mr_process_trigger(9), mpi3mr_global_trigger(9), mpi3mr_scsisense_trigger(9), mpi3mr_event_trigger(9), mpi3mr_reply_trigger(9), mpi3mr_get_num_trigger(9), mpi3mr_refresh_trigger(9), mpi3mr_release_diag_bufs(9), mpi3mr_set_trigger_data_in_hdb(9), mpi3mr_set_trigger_data_in_all_hdb(9), mpi3mr_hdbstatuschg_evt_th(9), mpi3mr_diag_buffer_for_type(9), mpi3mr_bsg_pel_abort(9), mpi3mr_bsg_verify_adapter(9), mpi3mr_bsg_refresh_hdb_triggers(9), mpi3mr_bsg_upload_hdb(9), mpi3mr_bsg_repost_hdb(9), mpi3mr_bsg_query_hdb(9), mpi3mr_enable_logdata(9), mpi3mr_get_logdata(9), mpi3mr_bsg_pel_enable(9), mpi3mr_get_all_tgt_info(9), mpi3mr_get_change_count(9), mpi3mr_bsg_adp_reset(9), mpi3mr_bsg_populate_adpinfo(9), mpi3mr_bsg_process_drv_cmds(9), mpi3mr_total_num_ioctl_sges(9), mpi3mr_bsg_build_sgl(9), mpi3mr_get_nvme_data_fmt(9), mpi3mr_build_nvme_sgl(9), mpi3mr_build_nvme_prp(9), mpi3mr_map_data_buffer_dma(9), mpi3mr_bsg_process_mpt_cmds(9), mpi3mr_app_save_logdata_th(9), mpi3mr_bsg_request(9), mpi3mr_bsg_exit(9), mpi3mr_bsg_node_release(9), mpi3mr_bsg_init(9), version_fw_show(9), fw_queue_depth_show(9), op_req_q_count_show(9), reply_queue_count_show(9), reply_qfull_count_show(9), logging_level_show(9), logging_level_store(9), adp_state_show(9), fwfault_count_show(9), sas_address_show(9), device_handle_show(9), sas_ncq_prio_supported_show(9), sas_ncq_prio_enable_show(9)

ok that's the whole list, every last one, and yeah it's long — but bestie, that's the point, iykyk 🔥

---

okay that's the tea ☕ this page comes to you from ./drivers/scsi/mpi3mr, dated October 2026 — mwah, slay, go read your sysfs, ily bye 💖🎀🦋