section 9 · Kernel routines 🧠

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F (continued)

field_prep(9)prepare a bitfield element✨
FIELD_PREP_CONST(9)prepare a constant bitfield element✨
FIELD_PREP_WM16(9)prepare a bitfield element with a mask in the upper half✨
FIELD_PREP_WM16_CONST(9)prepare a constant bitfield element with a mask in the upper half✨
fiemap_fill_next_extent(9)Fiemap helper function✨
fiemap_prep(9)check validity of requested flags for fiemap✨
fifo underrun handling(9)✨
fifo_icap_busy(9)Check the ICAP busy status.✨
fifo_icap_fifo_read(9)Read data from the Read FIFO.✨
fifo_icap_fifo_write(9)Write data to the write FIFO.✨
fifo_icap_flush_fifo(9)This function flushes the FIFOs in the device.✨
fifo_icap_get_configuration(9)Read configuration data from the device.✨
fifo_icap_get_status(9)Get the contents of the status register.✨
fifo_icap_read_fifo_occupancy(9)Query the read fifo available data.✨
fifo_icap_reset(9)Reset the logic of the icap device.✨
fifo_icap_set_configuration(9)Send configuration data to the ICAP.✨
fifo_icap_set_read_size(9)Set the size register.✨
fifo_icap_start_config(9)Initiate a configuration (write) to the device.✨
fifo_icap_start_readback(9)Initiate a readback from the device.✨
fifo_icap_write_fifo_vacancy(9)Query the write fifo available space.✨
fifo_show(9)debugfs: show the fifo information✨
file(9)operations on file entries✨
file operations(9)✨
file_audit_cb(9)call back for file specific audit fields✨
file_check_and_advance_wb_err(9)report wb error (if any) that was previously and advance wb_err to current one✨
file_close_fd(9)return file associated with fd✨
file_close_fd_locked(9)return file associated with fd✨
file_end_write(9)drop write access to a superblock of a regular file✨
file_fdatawait_range(9)wait for writeback to complete✨
file_init_path(9)initialize a 'struct file' based on path✨
file_modified(9)handle mandated vfs changes when modifying a file✨
file_modified_flags(9)handle mandated vfs changes when modifying a file✨
file_ns_capable(9)Determine if the file's opener had a capability in effect✨
file_open_name(9)open file and return file pointer✨
file_ref_get(9)Acquire one reference on a file✨
file_ref_inc(9)Acquire one reference on a file✨
file_ref_init(9)Initialize a file reference count✨
file_ref_put(9)- Release a file reference✨
file_ref_put_close(9)drop a reference expecting it would transition to FILE_REF_NOREF✨
file_ref_read(9)Read the number of file references✨
file_remove_privs(9)remove special file privileges (suid, capabilities)✨
file_sample_sb_err(9)sample the current errseq_t to test for later errors✨
file_start_write(9)get write access to a superblock for regular file io✨
file_to_blk_mode(9)get block open flags from file flags✨
file_to_v4l2_fh(9)Return the v4l2_fh associated with a struct file✨
file_update_time(9)update mtime and ctime time✨
file_write_and_wait_range(9)write out & wait on a file range✨
file_write_not_started(9)check if SB_FREEZE_WRITE is not held✨
file_write_started(9)check if SB_FREEZE_WRITE is held✨
fileassoc(9)in-kernel, file system independent, file meta-data association✨
fileattr_fill_flags(9)initialize fileattr with flags✨
fileattr_fill_xflags(9)initialize fileattr with xflags✨
fileattr_has_fsx(9)check for extended flags/attributes✨
filedesc(9)file descriptor tables and operations✨
filemap_cachestat(9)compute the page cache statistics of a mapping✨
filemap_check_wb_err(9)has an error occurred since the mark was sampled?✨
filemap_dirty_folio(9)Mark a folio dirty for filesystems which do not use buffer_heads.✨
filemap_dontcache_kick_writeback(9)kick flusher for IOCB_DONTCACHE writes✨
filemap_fault(9)read in file data for page fault handling✨
filemap_fdatawait_keep_errors(9)wait for writeback without clearing errors✨
filemap_fdatawait_range(9)wait for writeback to complete✨
filemap_fdatawait_range_keep_errors(9)wait for writeback to complete✨
filemap_fdatawrite_range(9)start writeback on mapping dirty pages in range✨
filemap_flush(9)mostly a non-blocking flush✨
filemap_flush_range(9)start writeback on a range✨
filemap_get_folio(9)Find and get a folio.✨
filemap_get_folios(9)Get a batch of folios✨
filemap_get_folios_contig(9)Get a batch of contiguous folios✨
filemap_get_folios_dirty(9)Get a batch of dirty folios✨
filemap_get_folios_tag(9)Get a batch of folios matching @tag✨
filemap_grab_folio(9)grab a folio from the page cache✨
filemap_invalidate_inode(9)Invalidate/forcibly write back a range of an inode's pagecache✨
filemap_lock_folio(9)Find and lock a folio.✨
filemap_range_has_page(9)check if a page exists in range.✨
filemap_range_needs_writeback(9)check if range potentially needs writeback✨
filemap_read(9)Read data from the page cache.✨
filemap_release_folio(9)Release fs-specific metadata on a folio.✨
filemap_remove_folio(9)Remove folio from page cache.✨
filemap_sample_wb_err(9)sample the current errseq_t to test for later errors✨
filemap_set_wb_err(9)set a writeback error on an address_space✨
filemap_splice_read(9)Splice data from a file's pagecache into a pipe✨
filemap_write_and_wait_range(9)write out & wait on a file range✨
fill_dc_dirty_rects(9)Fill DC dirty regions for PSR selective updates✨
fill_gap(9)make index nodes in gaps in dirty index LEBs.✨
fill_mg_cmtime(9)Fill in the mtime and ctime and flag ctime as QUERIED✨
fill_random_string(9)Populate a buffer with a random NUL-terminated string.✨
fill_swm_input(9)fill in the SWM input ids given the register✨
fillup_metapath(9)fill up buffers for the metadata path to a specific height✨
filp_open(9)open file and return file pointer✨
FILS shared key authentication offload(9)✨
FILS shared key crypto offload(9)✨
filter_ack(9)filters incoming packets for acknowledgements✨
filter_irq_stacks(9)Find first IRQ stack entry in trace✨
filter_kalman(9)Unidimensional Kalman filter, also known as linear quadratic estimation (LQE)✨
filter_parse_regex(9)parse a basic regex✨
filter_vdos_locked(9)Find a vdo in the registry if it exists there.✨
fimc_active_queue_add(9)add buffer to the capture active buffers queue✨
fimc_active_queue_pop(9)pop buffer from the capture active buffers queue✨
fimc_adjust_mplane_format(9)adjust bytesperline/sizeimage for each plane✨
fimc_capture_config_update(9)apply the camera interface configuration✨
fimc_find_format(9)lookup fimc color format by fourcc or media bus format✨
fimc_get_sensor_frame_desc(9)query the sensor for media bus frame parameters✨
fimc_hw_set_dma_seq(9)configure output DMA buffer sequence✨
fimc_isp_find_format(9)lookup color format by fourcc or media bus code✨
fimc_lite_find_format(9)lookup fimc color format by fourcc or media bus code✨
fimc_md_create_links(9)create default links between registered entities✨
fimc_pending_queue_add(9)add buffer to the capture pending buffers queue✨
fimc_pending_queue_pop(9)pop buffer from the capture pending buffers queue✨
fimc_pipeline_prepare(9)update pipeline information with subdevice pointers✨
fimc_pipeline_s_power(9)change power state of all pipeline subdevs✨
fimc_pipeline_try_format(9)negotiate and/or set formats at pipeline elements✨
fimc_pipeline_validate(9)check for formats inconsistencies between source and sink pad of each link✨
fimc_sensor_notify(9)v4l2_device notification from a sensor subdev✨
fimd_shadow_protect_win(9)disable updating values from shadow registers at vsync✨
find_acpi_cache_level_from_id(9)Get the level of the specified cache✨
find_acpi_cpu_topology(9)Determine a unique topology value for a given CPU✨
find_acpi_cpu_topology_cluster(9)Determine a unique CPU cluster value✨
find_acpi_cpu_topology_hetero_id(9)Get a core architecture tag✨
find_acpi_cpu_topology_package(9)Determine a unique CPU package value✨
find_alloc_undo(9)lookup (and if not present create) undo array✨
find_anchor_wl_entry(9)find wear-leveling entry to used as anchor PEB.✨
find_any_unique_sec(9)Find a unique section index by name✨
find_any_var_ref(9)Check if there is a reference to a given trigger variable✨
find_asymmetric_key(9)Find a key by ID.✨
find_attach(9)do attachment search for unconfined processes✨
find_closest(9)locate the closest element in a sorted array✨
find_closest_descending(9)locate the closest element in a sorted array✨
find_cpio_data(9)Search for files in an uncompressed cpio✨
find_cpu_id_range(9)found a linear ranger of @nthreads free CPU ids.✨
find_css_set(9)return a new css_set with one cgroup updated✨
find_cxl_port_by_dport(9)find a cxl_port by one of its targets✨
find_cxl_port_by_uport(9)Find a CXL port device companion✨
find_data_type(9)Return a data type at the location✨
find_devfreq_governor(9)find devfreq governor from name✨
find_device_devfreq(9)find devfreq struct using device pointer✨
find_dirtiest_idx_leb(9)find dirtiest index LEB from dirtiest array.✨
find_dirty_idx_leb(9)find a dirty index LEB.✨
find_divider(9)find clock divider by frequency✨
find_dock_dependent_device(9)get a device dependent on this dock✨
find_ei(9)Find element info corresponding to TLV Type✨
find_empty_bucket(9)Probe the bucket array starting at the given bucket for the next empty bucket, returning a pointer to it.✨
find_entry_starting_next_page(9)Find the first journal entry after a given entry which is not on the same block map page.✨
find_existing_css_set(9)init css array and find the matching css_set✨
find_first_and_and_bit(9)find the first set bit in 3 memory regions✨
find_first_and_bit(9)find the first set bit in both memory regions✨
find_first_andnot_bit(9)find the first bit set in 1st memory region and unset in 2nd✨
find_first_bit(9)find the first set bit in a memory region✨
find_first_dirty(9)find first dirty znode.✨
find_first_holder(9)find the first "holder" gh✨
find_first_waiter(9)find the first gh that's waiting for the glock✨
find_first_zero_bit(9)find the first cleared bit in a memory region✨
find_fm_anchor(9)find the most recent Fastmap superblock (anchor)✨
find_font(9)find a font✨
find_frame_creation(9)Search backward to find the instruction that creates the stack frame (hopefully, for the same function the initial PC is in).✨
find_free_block(9)Find the first block with a reference count of zero in the specified range of reference counter indexes.✨
find_free_page(9)Find a free page.✨
find_free_tcs(9)Find free tcs in the given tcs_group; only for active.✨
find_get_entries(9)gang pagecache lookup✨
find_get_page(9)find and get a page reference✨
find_gluebi_nolock(9)find a gluebi device.✨
find_hibernation_swap_type(9)Find swap type for hibernation✨
find_ino(9)find an entry on the size tree.✨
find_inode_by_ino_rcu(9)Find an inode in the inode cache✨
find_inode_nowait(9)find an inode in the inode cache✨
find_inode_rcu(9)find an inode in the inode cache✨
find_io_range_by_fwnode(9)find logical PIO range for given FW node✨
find_iova(9)finds an iova for a given pfn✨
find_last_bit(9)find the last set bit in a memory region✨
find_last_waiter(9)find the last gh that's waiting for the glock✨
find_lock_entries(9)Find a batch of pagecache entries.✨
find_lock_page(9)locate, pin and lock a pagecache page✨
find_lut_index_for_rate(9)determine I2C LUT index for given DFLL rate✨
find_mci_by_dev(9)Scan list of controllers looking for the one that manages the @dev device.✨
find_mean_wl_entry(9)find wear-leveling entry with medium erase counter.✨
find_metapath(9)Find path through the metadata tree✨
find_named_trigger(9)Find the common named trigger associated with @name✨
find_next_and_bit(9)find the next set bit in both memory regions✨
find_next_and_bit_wrap(9)find the next set bit in both memory regions✨
find_next_andnot_bit(9)find the next set bit in *addr1 excluding all the bits in *addr2✨
find_next_best_node(9)find the next node that should appear in a given node's fallback list✨
find_next_bit(9)find the next set bit in a memory region✨
find_next_bit_wrap(9)find the next set bit in a memory region✨
find_next_clump8(9)find next 8-bit clump with set bits in a memory region✨
find_next_dirty(9)find next dirty znode.✨
find_next_or_bit(9)find the next set bit in either memory regions✨
find_next_res(9)Finds the lowest resource that covers part of [@start..@end].✨
find_next_reservable_window(9)Find a reservable space within the given range.✨
find_next_usable_block(9)✨
find_next_zero_bit(9)find the next cleared bit in a memory region✨
find_nonnull_ptr(9)find a non-null pointer given a metapath and height✨
find_nth_and_andnot_bit(9)find N'th set bit in 2 memory regions, excluding those set in 3rd region✨
find_nth_and_bit(9)find N'th set bit in 2 memory regions✨
find_nth_bit(9)find N'th set bit in a memory region✨
find_old_idx(9)find an index node obsoleted since the last commit start.✨
find_or_add_av(9)internal function to find a volume, add a volume or do both (find and add if missing).✨
find_or_create_page(9)locate or add a pagecache page✨
find_or_make_vacancy(9)Find an empty bucket.✨
find_pa_parent_type(9)Find a parent of a specific type✨
find_page(9)Find the page info (if any) associated with a given pbn.✨
find_parent(9)Find the parent for a new SLA✨