lpfc_rampdown_queue_depth(9)

💅 lpfc_rampdown_queue_depth

okay so bestie, welcome to the Kernel API Manual, section 9 — this one is lpfc_rampdown_queue_depth, and it's giving “emergency queue chill-out button” energy. ✨

🌸 NAME 🌸

lpfc_rampdown_queue_depth — post RAMP_DOWN_QUEUE event to worker thread. 💖

✨ SYNOPSIS ✨

void lpfc_rampdown_queue_depth (struct lpfc_hba *phba );

🎀 ARGUMENTS 🎀

• phba — The Hba for which this call is being executed. That's the struct lpfc_hba *, bestie — the HBA whose business we're handling. 🫶

🦋 DESCRIPTION 🦋

okay so this routine gets called when there's a resource error in the driver or firmware. It posts a WORKER_RAMP_DOWN_QUEUE event for phba. It posts at most 1 event each second — yes, it's rate-limited, we love a calm queen. 👑

It also wakes up the worker thread of phba to process the WORKER_RAM_DOWN_EVENT event. And yes, the description literally says WORKER_RAM_DOWN_EVENT there — we are keeping it exactly as written, no editing the source vibes. 💀

🚨 No lock held, bestie. This routine should be called with no lock held. Do not be the person holding a lock here, okay? 😭

🌈 SEE ALSO 🌈

The kernel file in question:

• ./drivers/scsi/lpfc/lpfc_scsi.c

And here's the full squad of related kernel API pages — every single one, no cap:

• lpfc_sli4_set_rsp_sgl_last(9)
• lpfc_ramp_down_queue_handler(9)
• lpfc_scsi_dev_block(9)
• lpfc_new_scsi_buf_s3(9)
• lpfc_sli4_vport_delete_fcp_xri_aborted(9)
• lpfc_sli4_io_xri_aborted(9)
• lpfc_get_scsi_buf_s3(9)
• lpfc_get_scsi_buf_s4(9)
• lpfc_get_scsi_buf(9)
• lpfc_release_scsi_buf_s3(9)
• lpfc_release_scsi_buf_s4(9)
• lpfc_release_scsi_buf(9)
• lpfc_fcpcmd_to_iocb(9)
• lpfc_scsi_prep_dma_buf_s3(9)
• lpfc_bg_err_inject(9)
• lpfc_sc_to_bg_opcodes(9)
• lpfc_bg_err_opcodes(9)
• lpfc_bg_setup_bpl(9)
• lpfc_bg_setup_bpl_prot(9)
• lpfc_bg_setup_sgl(9)
• lpfc_bg_setup_sgl_prot(9)
• lpfc_prot_group_type(9)
• lpfc_bg_scsi_adjust_dl(9)
• lpfc_bg_scsi_prep_dma_buf_s3(9)
• lpfc_scsi_prep_dma_buf_s4(9)
• lpfc_bg_scsi_prep_dma_buf_s4(9)
• lpfc_scsi_prep_dma_buf(9)
• lpfc_bg_scsi_prep_dma_buf(9)
• lpfc_scsi_prep_cmnd_buf(9)
• lpfc_send_scsi_error_event(9)
• lpfc_scsi_unprep_dma_buf(9)
• lpfc_unblock_requests(9)
• lpfc_block_requests(9)
• lpfc_update_cmf_cmpl(9)
• lpfc_update_cmf_cmd(9)
• lpfc_handle_fcp_err(9)
• lpfc_fcp_io_cmd_wqe_cmpl(9)
• lpfc_scsi_cmd_iocb_cmpl(9)
• lpfc_scsi_prep_cmnd_buf_s3(9)
• lpfc_scsi_prep_cmnd_buf_s4(9)
• lpfc_scsi_prep_cmnd(9)
• lpfc_scsi_prep_task_mgmt_cmd_s3(9)
• lpfc_scsi_prep_task_mgmt_cmd_s4(9)
• lpfc_scsi_api_table_setup(9)
• lpfc_tskmgmt_def_cmpl(9)
• lpfc_check_pci_resettable(9)
• lpfc_info(9)
• lpfc_poll_rearm_timer(9)
• lpfc_poll_start_timer(9)
• lpfc_poll_timeout(9)
• lpfc_queuecommand(9)
• lpfc_abort_handler(9)
• lpfc_check_fcp_rsp(9)
• lpfc_send_taskmgmt(9)
• lpfc_chk_tgt_mapped(9)
• lpfc_reset_flush_io_context(9)
• lpfc_device_reset_handler(9)
• lpfc_target_reset_handler(9)
• lpfc_host_reset_handler(9)
• lpfc_sdev_init(9)
• lpfc_sdev_configure(9)
• lpfc_sdev_destroy(9)
• lpfc_create_device_data(9)
• lpfc_delete_device_data(9)
• __lpfc_get_device_data(9)
• lpfc_find_next_oas_lun(9)
• lpfc_enable_oas_lun(9)
• lpfc_disable_oas_lun(9)

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okay that's the whole page, bestie. 💖 This source lives at ./drivers/scsi/lpfc, and this edition is dated October 2026 — from the Kernel API Manual, section 9. Slay, go forth, and don't hold that lock. 💅✨