9 Kernel routines

8,468 pages in section 9.

A395
B597
C544
D740
E141
F164
G151
H112
I710
J70
K209
L110
M433
N292
O62
P540
Q6
R443
S1611
T136
U339
V293
W112
X42
Y2
Z40

s3 to si
sk to sm
sn to ss
st to sx
sy

s3

s390_register_adapter_interrupt register adapter interrupt handler
s390_unregister_adapter_interrupt unregister adapter interrupt handler
s3d_but_info status of a button
s3d_evt event information
s3d_key_event key event information
s3d_obj_info object information
s3dw_button button of s3d widget
s3dw_input input field of s3d widget
s3dw_label label of s3d widget
s3dw_scrollbar scrollbar of s3d widget
s3dw_style style of s3d widget
s3dw_surface root of s3d widget
s3dw_textbox textbox of s3d widget
s3dw_widget s3d widget information

sa

sample_hold Sample and Hold
sampler sample data from HAL in real time
samples_to_bytes Unit conversion of the size from samples to bytes
sanitize_inquiry_string remove non-graphical chars from an INQUIRY result string
sas_attach_transport instantiate SAS transport template
sas_disable_tlr setting TLR flags
sas_enable_tlr setting TLR flags
sas_end_device_alloc allocate an rphy for an end device
sas_expander_alloc allocate an rphy for an end device
sas_get_address return the SAS address of the device
sas_phy_add add a SAS PHY to the device hierarchy
sas_phy_alloc allocates and initialize a SAS PHY structure
sas_phy_delete remove SAS PHY
sas_phy_free free a SAS PHY
sas_port_add add a SAS port to the device hierarchy
sas_port_add_phy add another phy to a port to form a wide port
sas_port_delete remove SAS PORT
sas_port_delete_phy remove a phy from a port or wide port
sas_port_free free a SAS PORT
sas_port_get_phy try to take a reference on a port member
sas_release_transport release SAS transport template instance
sas_remove_children tear down a devices SAS data structures
sas_remove_host tear down a Scsi_Host's SAS data structures
sas_rphy_add add a SAS remote PHY to the device hierarchy
sas_rphy_delete remove and free SAS remote PHY
sas_rphy_free free a SAS remote PHY
sas_rphy_remove remove SAS remote PHY
sas_rphy_unlink unlink SAS remote PHY
sas_tlr_supported checking TLR bit in vpd 0x90
sata_down_spd_limit adjust SATA spd limit downward
sata_link_debounce debounce SATA phy status
sata_link_hardreset reset link via SATA phy reset
sata_link_init_spd Initialize link->sata_spd_limit
sata_link_resume resume SATA link
sata_link_scr_lpm manipulate SControl IPM and SPM fields
sata_lpm_ignore_phy_events test if PHY event should be ignored
sata_phy_debounce debounce SATA phy status
sata_phy_reset Reset SATA bus.
sata_phy_resume resume SATA phy
sata_print_link_status Print SATA link status
sata_scr_read read SCR register of the specified port
sata_scr_valid test whether SCRs are accessible
sata_scr_write write SCR register of the specified port
sata_scr_write_flush write SCR register of the specified port and flush
sata_set_spd set SATA spd according to spd limit
sata_set_spd_needed is SATA spd configuration needed
sata_std_hardreset COMRESET w/o waiting or classification

sb

sb_end_intwrite drop write access to a superblock for internal fs purposes
sb_end_pagefault drop write access to a superblock from a page fault
sb_end_write drop write access to a superblock
sb_start_pagefault get write access to a superblock from a page fault
sb_start_write get write access to a superblock
sbintime Q32.32 fixed point representation of time
sbintime_getsec Q32.32 fixed point representation of time
sbinuptime get the time elapsed since boot
sbttobt Q32.32 fixed point representation of time
sbttoms Q32.32 fixed point representation of time
sbttons Q32.32 fixed point representation of time
sbttots Q32.32 fixed point representation of time
sbttotv Q32.32 fixed point representation of time
sbttous Q32.32 fixed point representation of time
sbuf safe string formatting
sbuf_bcat safe string formatting
sbuf_bcopyin safe string formatting
sbuf_bcpy safe string formatting
sbuf_cat safe string formatting
sbuf_clear safe string formatting
sbuf_clear_flags safe string composition
sbuf_copyin safe string formatting
sbuf_cpy safe string formatting
sbuf_data safe string formatting
sbuf_delete safe string formatting
sbuf_done safe string formatting
sbuf_end_section safe string composition
sbuf_error safe string composition
sbuf_finish safe string formatting
sbuf_get_flags safe string composition
sbuf_hexdump safe string composition
sbuf_len safe string formatting
sbuf_new safe string formatting
sbuf_new_auto safe string composition
sbuf_new_for_sysctl safe string composition
sbuf_nl_terminate safe string composition
sbuf_overflowed safe string formatting
sbuf_printf safe string formatting
sbuf_printf_drain safe string composition
sbuf_putbuf safe string composition
sbuf_putc safe string formatting
sbuf_set_drain safe string composition
sbuf_set_flags safe string composition
sbuf_setpos safe string formatting
sbuf_start_section safe string composition
sbuf_trim safe string formatting
sbuf_vprintf safe string formatting

sc

scale LinuxCNC HAL component that applies a scale and offset to its input
scaled_s32_sums Sum of four inputs (each with a scale)
scan_read_oob [GENERIC] Scan data+OOB region to buffer
scarakins kinematics definitions for LinuxCNC For additional information, see the Documents 'Advanced Topics': Kinematics 5-Axis Kinematics Switchable Kinematics
sched_setscheduler change the scheduling policy and/or RT priority of a thread.
sched_setup perform round-robin scheduling of runnable processes
schedclock perform round-robin scheduling of runnable processes
schedcpu perform round-robin scheduling of runnable processes
schedule_delayed_work put work task in global workqueue after delay
schedule_delayed_work_on queue work in global workqueue on CPU after delay
schedule_hrtimeout sleep until timeout
schedule_hrtimeout_range sleep until timeout
schedule_timeout sleep until timeout
schedule_work put work task in global workqueue
scheduler perform round-robin scheduling of runnable processes
scnprintf Format a string and place it in a buffer
SCPNT_TO_LOOKUP_IDX searches for a given scmd in the ScsiLookup[] array list
scsi_10_lba_len Get LBA and transfer length
scsi_16_lba_len Get LBA and transfer length
scsi_6_lba_len Get LBA and transfer length
scsi_add_host add a scsi host
scsi_add_host_with_dma add a scsi host with dma device
scsi_add_lun allocate and fully initialze a scsi_device
scsi_add_single_device Respond to user request to probe for/add device
scsi_adjust_queue_depth Let low level drivers change a device's queue depth
scsi_alloc_sdev allocate and setup a scsi_Device
scsi_alloc_target allocate a new or find an existing target
scsi_allocate_command get a fully allocated SCSI command
scsi_bios_ptable Read PC partition table out of first sector of device.
scsi_block_when_processing_errors Prevent cmds from being queued.
scsi_build_sense_buffer build sense data in a buffer
scsi_change_queue_depth change a device's queue depth
scsi_check_sense Examine scsi cmd sense
scsi_cmd_get_serial Assign a serial number to a command
scsi_complete_async_scans Wait for asynchronous scans to complete
scsi_dev_info_list_add add one dev_info list entry.
scsi_dev_info_list_add_str parse dev_list and add to the scsi_dev_info_list.
scsi_dev_info_list_find find a matching dev_info list entry.
scsi_device_from_queue return sdev associated with a request_queue
scsi_device_get get an additional reference to a scsi_device
scsi_device_lookup find a device given the host
scsi_device_lookup_by_target find a device given the target
scsi_device_put release a reference to a scsi_device
scsi_device_quiesce Block user issued commands.
scsi_device_resume Restart user issued commands to a quiesced device.
scsi_device_set_state Take the given device through the device state model.
scsi_device_supports_vpd test if a device supports VPD pages
scsi_device_type Return 17 char string indicating device type.
scsi_dma_map perform DMA mapping against command's sg lists
scsi_dma_unmap unmap command's sg lists mapped by scsi_dma_map
scsi_eh_finish_cmd Handle a cmd that eh is finished with.
scsi_eh_flush_done_q finish processed commands or retry them.
scsi_eh_get_sense Get device sense data.
scsi_eh_prep_cmnd Save a scsi command info as part of error recovery
scsi_eh_ready_devs check device ready state and recover if not.
scsi_eh_restore_cmnd Restore a scsi command info as part of error recovery
scsi_execute insert request and wait for the result
scsi_execute_async insert request
scsi_exit_devinfo remove /proc/scsi/device_info & the scsi_dev_info_list
scsi_exit_procfs Remove scsi/scsi and scsi from procfs
scsi_finish_async_scan asynchronous scan has finished
scsi_finish_command cleanup and pass command back to upper layer
scsi_flush_work Flush a Scsi_Host's workqueue.
scsi_free_command free a command allocated by scsi_allocate_command
scsi_generic_msg_handler receive message handler for GENERIC transport messages
scsi_get_command Allocate and setup a scsi command block
scsi_get_device_flags get device specific flags from the dynamic device list.
scsi_get_sense_info_fld get information field from sense data (either fixed or descriptor format)
scsi_get_vpd_page Get Vital Product Data from a SCSI device
scsi_host_alloc register a scsi host adapter instance.
scsi_host_get inc a Scsi_Host ref count
scsi_host_lookup get a reference to a Scsi_Host by host no
scsi_host_put dec a Scsi_Host ref count
scsi_host_set_state Take the given host through the host state model.
scsi_init_devinfo set up the dynamic device list.
scsi_init_procfs create scsi and scsi/scsi in procfs
scsi_inq_str print INQUIRY data from min to max index, strip trailing whitespace
scsi_internal_device_block internal function to put a device temporarily into the SDEV_BLOCK state
scsi_internal_device_unblock resume a device after a block request
scsi_ioctl Dispatch ioctl to scsi device
scsi_ioctl_reset
scsi_is_sas_phy check if a struct device represents a SAS PHY
scsi_is_sas_port check if a struct device represents a SAS port
scsi_is_sas_rphy check if a struct device represents a SAS remote PHY
scsi_kmap_atomic_sg find and atomically map an sg-elemnt
scsi_kunmap_atomic_sg atomically unmap a virtual address, previously mapped with scsi_kmap_atomic_sg
scsi_mode_select issue a mode select
scsi_mode_sense issue a mode sense, falling back from 10 to six bytes if necessary.
scsi_netlink_exit Called by SCSI subsystem to disable the SCSI transport netlink interface
scsi_netlink_init Called by SCSI subsystem to initialize the SCSI transport netlink interface
scsi_nl_rcv_event Event handler for a netlink socket.
scsi_nl_rcv_msg Receive message handler.
scsi_nonblockable_ioctl Handle SG_SCSI_RESET
scsi_normalize_sense normalize main elements from either fixed or descriptor sense data format into a common format.
scsi_partsize Parse cylinders/heads/sectors from PC partition table
scsi_prep_async_scan prepare for an async scan
scsi_print_status print scsi status description
scsi_probe_and_add_lun probe a LUN, if a LUN is found add it
scsi_probe_lun probe a single LUN using a SCSI INQUIRY
scsi_proc_host_add Add entry for this host to appropriate /proc dir
scsi_proc_host_rm remove this host's entry from /proc
scsi_proc_hostdir_add Create directory in /proc for a scsi host
scsi_proc_hostdir_rm remove directory in /proc for a scsi host
scsi_put_command Free a scsi command block
scsi_queue_work Queue work to the Scsi_Host workqueue.
scsi_remove_device unregister a device from the scsi bus
scsi_remove_host remove a scsi host
scsi_remove_single_device Respond to user request to remove a device
scsi_remove_target try to remove a target and all its devices
scsi_report_lun_scan Scan using SCSI REPORT LUN results
scsi_report_opcode Find out if a given command opcode is supported
scsi_req_abort_cmd - Request command recovery for the specified command
scsi_schedule_eh schedule EH for SCSI host
scsi_sense_desc_find search for a given descriptor type in descriptor sense data format.
scsi_sequential_lun_scan sequentially scan a SCSI target
scsi_target_reap check to see if target is in use and destroy if not
scsi_target_reap_ref_release remove target from visibility
scsi_test_unit_ready test if unit is ready
scsi_track_queue_full track QUEUE_FULL events to adjust queue depth
scsi_unlock_floptical unlock device via a special MODE SENSE command
scsi_vpd_lun_id return a unique device identification
scsicam_bios_param Determine geometry of a disk in cylinders/heads/sectors.

sd

sdev_evt_alloc allocate a new scsi event
sdev_evt_send send asserted event to uevent thread
sdev_evt_send_simple send asserted event to uevent thread
SDT a DTrace framework for adding statically-defined tracing probes
SDT_PROBE a DTrace framework for adding statically-defined tracing probes
SDT_PROBE_DECLARE a DTrace framework for adding statically-defined tracing probes
SDT_PROBE_DEFINE a DTrace framework for adding statically-defined tracing probes
SDT_PROVIDER_DECLARE a DTrace framework for adding statically-defined tracing probes
SDT_PROVIDER_DEFINE a DTrace framework for adding statically-defined tracing probes

se

search_bbt [GENERIC] scan the device for a specific bad block table
search_read_bbts [GENERIC] scan the device for bad block table(s)
securelevel_ge test active securelevel
securelevel_gt test active securelevel
security_init initializes the security framework
security_module_enable Load given security module on boot ?
securityfs_create_dir create a directory in the securityfs filesystem
securityfs_create_file create a file in the securityfs filesystem
securityfs_remove removes a file or directory from the securityfs filesystem
seldrain record and wakeup select requests
select8 8-bit binary match detector
selrecord record and wakeup select requests
selwakeup record and wakeup select requests
sema kernel counting semaphore
sema_destroy kernel counting semaphore
sema_init kernel counting semaphore
sema_post kernel counting semaphore
sema_timedwait kernel counting semaphore
sema_trywait kernel counting semaphore
sema_value kernel counting semaphore
sema_wait kernel counting semaphore
SendEventAck Send EventAck request to MPT adapter.
SendEventNotification Send EventNotification (on or off) request to adapter
SendIocInit Send IOCInit request to MPT adapter.
SendIocReset Send IOCReset request to MPT adapter.
SendPortEnable Send PortEnable request to MPT adapter port.
seq_escape print string into buffer, escaping some characters
seq_file_path seq_file interface to print a pathname of a file
seq_hlist_next move to the next position of the hlist
seq_hlist_next_percpu move to the next position of the percpu hlist array
seq_hlist_next_rcu move to the next position of the hlist protected by RCU
seq_hlist_start start an iteration of a hlist
seq_hlist_start_head start an iteration of a hlist
seq_hlist_start_head_rcu start an iteration of a hlist protected by RCU
seq_hlist_start_percpu start an iteration of a percpu hlist array
seq_hlist_start_rcu start an iteration of a hlist protected by RCU
seq_lseek ->llseek method for sequential files.
seq_open initialize sequential file
seq_pad write padding spaces to buffer
seq_path seq_file interface to print a pathname
seq_read ->read method for sequential files.
seq_release free the structures associated with sequential file.
seq_write write arbitrary data to buffer
seqc lockless read algorithm
seqc_consistent lockless read algorithm
seqc_read lockless read algorithm
seqc_write_begin lockless read algorithm
seqc_write_end lockless read algorithm
serial8250_register_8250_port register a serial port
serial8250_register_port register a serial port
serial8250_resume_port resume one serial port
serial8250_suspend_port suspend one serial port
serial8250_unregister_port remove a 16x50 serial port at runtime
serport Hardware driver for the digital I/O bits of the 8250 and 16550 serial port.
set_bit Atomically set a bit in memory
set_current_blocked change current->blocked mask
set_dma_reserve set the specified number of pages reserved in the first zone
SET_IEEE80211_DEV set device for 802.11 hardware
SET_IEEE80211_PERM_ADDR set the permanent MAC address for 802.11 hardware
set_irq_chip set the irq chip for an irq
set_irq_chip_data set irq chip data for an irq
set_irq_data set irq type data for an irq
set_irq_msi set irq type data for an irq
set_irq_nested_thread Set/Reset the IRQ_NESTED_THREAD flag of an irq
set_irq_type set the irq trigger type for an irq
set_irq_wake control irq power management wakeup
set_nlink directly set an inode's link count
set_pageblock_flags_group Set the requested group of flags for a pageblock_nr_pages block of pages
set_pfnblock_flags_mask Set the requested group of flags for a pageblock_nr_pages block of pages
set_timer_slack set the allowed slack for a timer
set_wiphy_dev set device pointer for wiphy
setenv kernel environment variable functions
setrunnable perform round-robin scheduling of runnable processes
setrunqueue manage the queue of runnable processes
SETSETNEQ kernel signal functions
SETSETOR kernel signal functions
setsserial a utility for setting Smart Serial NVRAM parameters. NOTE: This rather clunky utility is no longer needed except for flashing new smart-serial remote firmware. Smart-serial remote parameters can now be set in the HAL file in the normal way.
setup_irq setup an interrupt
setup_per_zone_pages_min called when min_free_kbytes changes.
setup_per_zone_wmarks called when min_free_kbytes changes or when memory is hot-{added|removed}
setup_sys_fs_device_files sets up the device files under device namespace

sf

sf_buf manage temporary kernel address space mapping for memory pages
sf_buf_alloc manage temporary kernel address space mapping for memory pages
sf_buf_free manage temporary kernel address space mapping for memory pages
sf_buf_kva manage temporary kernel address space mapping for memory pages
sf_buf_page manage temporary kernel address space mapping for memory pages

sg

sget find or create a superblock
sget_userns find or create a superblock
sglist manage a scatter/gather list of physical memory addresses
sglist_alloc manage a scatter/gather list of physical memory addresses
sglist_append manage a scatter/gather list of physical memory addresses
sglist_append_bio manage a scatter/gather list of physical memory addresses
sglist_append_mbuf manage a scatter/gather list of physical memory addresses
sglist_append_mbuf_epg manage a scatter/gather list of physical memory addresses
sglist_append_phys manage a scatter/gather list of physical memory addresses
sglist_append_sglist manage a scatter/gather list of physical memory addresses
sglist_append_single_mbuf manage a scatter/gather list of physical memory addresses
sglist_append_uio manage a scatter/gather list of physical memory addresses
sglist_append_user manage a scatter/gather list of physical memory addresses
sglist_append_vmpages manage a scatter/gather list of physical memory addresses
sglist_build manage a scatter/gather list of physical memory addresses
sglist_clone manage a scatter/gather list of physical memory addresses
sglist_consume_uio manage a scatter/gather list of physical memory addresses
sglist_count manage a scatter/gather list of physical memory addresses
sglist_count_mbuf_epg manage a scatter/gather list of physical memory addresses
sglist_count_vmpages manage a scatter/gather list of physical memory addresses
sglist_free manage a scatter/gather list of physical memory addresses
sglist_hold manage a scatter/gather list of physical memory addresses
sglist_init manage a scatter/gather list of physical memory addresses
sglist_join manage a scatter/gather list of physical memory addresses
sglist_length manage a scatter/gather list of physical memory addresses
sglist_reset manage a scatter/gather list of physical memory addresses
sglist_slice manage a scatter/gather list of physical memory addresses
sglist_split manage a scatter/gather list of physical memory addresses

sh

sh64_get_wired_dtlb_entry Allocate a wired (locked-in) entry in the DTLB
sh64_next_free_dtlb_entry Find the next available DTLB entry
sh64_put_wired_dtlb_entry Free a wired (locked-in) entry in the DTLB.
sh64_setup_tlb_slot Load up a translation in a wired slot.
sh64_teardown_tlb_slot Teardown a translation.
sh64_tlb_init Perform initial setup for the DTLB and ITLB.
shm_map map shared memory objects into the kernel's address space
shm_unmap map shared memory objects into the kernel's address space
shost_for_each_device iterate over all devices of a host
should_yield functions for yielding execution of the current thread
shrink_active_range Shrink an existing registered range of PFNs
shrink_dcache_parent prune dcache
shrink_dcache_sb shrink dcache for a superblock
shutdown_nice reboot, halt, or power off the system

si

SIG_CONTSIGMASK kernel signal functions
SIG_STOPSIGMASK kernel signal functions
SIGADDSET kernel signal functions
SIGDELSET kernel signal functions
SIGEMPTYSET kernel signal functions
sigexit kernel signal functions
SIGFILLSET kernel signal functions
siggen signal generator
siginit kernel signal functions
SIGISEMPTY kernel signal functions
SIGISMEMBER kernel signal functions
signal kernel signal functions
signal_delivered
SIGNOTEMPTY kernel signal functions
signotify kernel signal functions
SIGPENDING kernel signal functions
SIGSETAND kernel signal functions
SIGSETCANTMASK kernel signal functions
SIGSETEQ kernel signal functions
SIGSETNAND kernel signal functions
sil_dev_config Apply device/host-specific errata fixups
sil_set_mode wrap set_mode functions
sim_axis_hardware A component to simulate home and limit switches
sim_encoder simulated quadrature encoder
sim_home_switch Home switch simulator
sim_matrix_kb convert HAL pin inputs to keycodes
sim_parport A component to simulate the pins of the hal_parport component
sim_spindle Simulated spindle with index pulse
simple_strtol convert a string to a signed long
simple_strtoll convert a string to a signed long long
simple_strtoul convert a string to an unsigned long
simple_strtoull convert a string to an unsigned long long
simple_tp This component is a single axis simple trajectory planner, same as used for jogging in LinuxCNC.
single_erase [GENERIC] NAND standard block erase command function
single_erase_cmd [GENERIC] NAND standard block erase command function

© 2026 All Tuner Labs · Made with ❤️ in Poblenou, Barcelona

llms.txt Sections

Manual pages are their authors', as Arch Linux, Debian, FreeBSD, OpenBSD and macOS ship them.