enable_sdev_max_qd_show(9)

💖 NAME 💖

hiii bestie, welcome to the Kernel API Manual — section (9) kernel API energy, okay? This page is literally enable_sdev_max_qd_show, and its whole job is to display whether sdev max qd is enabled/disabled. 🫶

✨ SYNOPSIS ✨

here's the exact signature, no cap, don't @ me:

ssize_t enable_sdev_max_qd_show (struct device *cdev , struct device_attribute *attr , char *buf );

🎀 ARGUMENTS 🎀

• cdev — pointer to embedded class device. that's the device vibe. 🫶
• attr — unused. literally not used here, bestie. 💀
• buf — the buffer returned. that's the buffer-returned energy. ✨

🦋 DESCRIPTION 🦋

okay so this is a sysfs read/write shost attribute. highkey important: this attribute is used to set the targets queue depth to HBA IO queue depth if this attribute is enabled. that's the whole tea. 🍵

🌈 SEE ALSO 🌈

bestie, the SEE ALSO list is giving entire mpt3sas group chat. here's every single ref, in order, no cap:

Kernel file ./drivers/scsi/mpt3sas/mpt3sas_ctl.c 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),
diag_trigger_mpi_store(9), drv_support_bitmap_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)

okay that's the page, bestie 💅 — source/version: ./drivers/scsi/mpt3sas; date: October 2026; and yes, we're still on the enable_sdev_max_qd_show(9) page. mwah 🫶