diag_trigger_mpi_store(9)

💅 diag_trigger_mpi_store 💅

okay bestie, welcome to the Kernel API Manual entry for diag_trigger_mpi_store(9) — yes that's a mouthful, yes it's iconic, and yes we're gonna get through it together 🫶

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✨ NAME ✨

diag_trigger_mpi_store — literally the function that stores the diag_trigger_mpi attribute. that's the whole vibe. no notes. 💅

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🌸 SYNOPSIS 🌸

ssize_t diag_trigger_mpi_store (struct device *cdev , struct
       device_attribute *attr , const char *buf , size_t count );

like… look at that signature. four whole arguments. she's doing a lot but she's slaying it ✨

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🎀 ARGUMENTS 🎀

• cdev — pointer to embedded class device. that's the main character right there 👑
• attr — ?. and honestly? same. the manpage said "?" and we respect the mystery 🕵️‍♀️ (ngl the source doesn't say, so we're not making anything up about it)
• buf — the buffer returned. that's where the goods live 🍓
• count — ?. again, the manpage is being mysterious about it. we simply don't know and we're not gonna pretend we do 🙈

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🦋 DESCRIPTION 🦋

so what is she? she's a sysfs 'read/write' shost attribute. periodt. that's the description. that's all the manpage gives us and we are not about to start inventing lore 💀

so basically: 'read/write', attribute, shost flavored. that's it. that's the entire description. short and serving 🌈

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🔥 SEE ALSO 🔥

okay this is the part where the manpage decides to list the ENTIRE friend group at once. we love a full roster. deep breath bestie, here we go 😭

Kernel file ./drivers/scsi/mpt3sas/mpt3sas_ctl.c and then — hold on — the whole crew:

• enum block_state(9)
• _ctl_display_some_debug(9)
• mpt3sas_ctl_done(9)
• _ctl_check_event_type(9)
• mpt3sas_ctl_add_to_event_log(9)
• mpt3sas_ctl_event_callback(9)
• _ctl_verify_adapter(9)
• mpt3sas_ctl_pre_reset_handler(9)
• mpt3sas_ctl_clear_outstanding_ioctls(9)
• mpt3sas_ctl_reset_done_handler(9)
• _ctl_fasync(9)
• _ctl_poll(9)
• _ctl_set_task_mid(9)
• _ctl_send_mctp_passthru_req(9)
• _ctl_do_mpt_command(9)
• _ctl_getiocinfo(9)
• _ctl_eventquery(9)
• _ctl_eventenable(9)
• _ctl_eventreport(9)
• _ctl_do_reset(9)
• _ctl_btdh_search_sas_device(9)
• _ctl_btdh_search_pcie_device(9)
• _ctl_btdh_search_raid_device(9)
• _ctl_btdh_mapping(9)
• _ctl_diag_capability(9)
• _ctl_diag_get_bufftype(9)
• _ctl_diag_register_2(9)
• mpt3sas_enable_diag_buffer(9)
• _ctl_diag_register(9)
• _ctl_diag_unregister(9)
• _ctl_diag_query(9)
• mpt3sas_send_diag_release(9)
• _ctl_diag_release(9)
• _ctl_diag_read_buffer(9)
• _ctl_addnl_diag_query(9)
• _ctl_enable_diag_sbr_reload(9)
• _ctl_compat_mpt_command(9)
• _ctl_ioctl_main(9)
• _ctl_get_mpt_mctp_passthru_adapter(9)
• mpt3sas_get_device_count(9)
• _ctl_ioctl(9)
• _ctl_mpt2_ioctl(9)
• _ctl_ioctl_compat(9)
• _ctl_mpt2_ioctl_compat(9)
• version_fw_show(9)
• version_bios_show(9)
• version_mpi_show(9)
• version_product_show(9)
• version_nvdata_persistent_show(9)
• version_nvdata_default_show(9)
• board_name_show(9)
• board_assembly_show(9)
• board_tracer_show(9)
• io_delay_show(9)
• device_delay_show(9)
• fw_queue_depth_show(9)
• host_sas_address_show(9)
• logging_level_show(9)
• fwfault_debug_show(9)
• ioc_reset_count_show(9)
• reply_queue_count_show(9)
• BRM_status_show(9)
• host_trace_buffer_size_show(9)
• host_trace_buffer_show(9)
• host_trace_buffer_enable_show(9)
• diag_trigger_master_show(9)
• diag_trigger_master_store(9)
• diag_trigger_event_show(9)
• diag_trigger_event_store(9)
• diag_trigger_scsi_show(9)
• diag_trigger_scsi_store(9)
• diag_trigger_mpi_show(9)
• drv_support_bitmap_show(9)
• enable_sdev_max_qd_show(9)
• enable_sdev_max_qd_store(9)
• sas_address_show(9)
• sas_device_handle_show(9)
• sas_ncq_prio_supported_show(9)
• sas_ncq_prio_enable_show(9)
• mpt3sas_ctl_init(9)
• mpt3sas_ctl_release(9)
• mpt3sas_ctl_exit(9)

and that's the whole squad, no cap. lowkey obsessed with how thorough that list is 💜

also!! don't forget her sibling diag_trigger_mpi_show(9) is in there — the show to this store, iykyk 👀

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okay that's the whole page bestie, you ate that 💅✨ just so you know where this came from: it lives under ./drivers/scsi/mpt3sas and it's dated October 2026. mwah, go forth and store your attributes 🎀🦋💖