reply_queue_count_show(9)

💅 reply_queue_count_show(9) — the Kernel API Manual, bestie edition

okay so this one lives in the kernel API manual (that's the <italic>9</italic> section for the uninitiated — kernel functions, not your average ls situation) and it's basically a tiny little sysfs show function that tells you how many reply queues exist. that's it. that's the whole vibe. ✨

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🎀 NAME 🎀

reply_queue_count_show — literally the number of reply queues, no cap

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✨ SYNOPSIS ✨

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

like yeah that's the whole signature, she's short and she knows it 💅

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🫶 ARGUMENTS 🫶

• cdev — pointer to the embedded class device. that's your girl right there 🌸
• attr — honestly? the manpage just says ?. iconic. we don't know either 😭
• buf — the buffer that gets returned, aka where the answer goes 📥

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🦋 DESCRIPTION 🦋

So this is the number of reply queues. periodt. that's the described behaviour, that's what it does, no extra lore 🌈

It's a sysfs 'read-only' shost attribute — so you can look, but you can't touch, bestie 🙈 read-only means read-only.

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👑 SEE ALSO 👑

The whole mpt3sas ctl friend group, presented in the order the original listed them because we respect the timeline 💖

• 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)
• 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_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)

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Also, per the original's "Kernel file" line, all of these hang out in ./drivers/scsi/mpt3sas/mpt3sas_ctl.c — so if you go looking, that's the address, iykyk 🔥

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🌸 sign-off 🌸

kisses from the <pink>mpt3sas</pink> corner of the tree — source path ./drivers/scsi/mpt3sas, dated October 2026, and yeah, it's still reply_queue_count_show(9). slay, go read your sysfs attributes responsibly 💜🦋