mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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f079ab01b5
This should be all that is needed for XFS to use large folios. There is no code in this pull request to create large folios, but no additional changes should be needed to XFS or iomap once they are created. -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEejHryeLBw/spnjHrDpNsjXcpgj4FAmHcpaUACgkQDpNsjXcp gj4MUAf+ItcKfgFo1QCMT+6Y0mohVqPme/vdyOCNv6yOOfZZqN5ZQc+2hmxXrRz9 XPOPwZKL0TttlHSYEJmrm8mqwN8UXl0kqMu4kQqOXMziiD9qpVlaLXOZ7iLdkQxu z/xe1iACcGfJUaQCsaMP6BZqp6iETA4qP72dBE4jc6PC4H3OI0pN/900gEbAcLxD Yn0a5NhrdS/EySU2aHLB6OcwhqnSiHBVjUbFiuXxuvOYyzLaERIh00Kx3jLdj4DR 82K4TF8h2IZpALfIDSt0JG+gHLCc+EfF7Yd/xkeEv0md3ncyi+jWvFCFPNJbyFjm cYoDTSunfbxwszA2n01R4JM8/KkGwA== =IeFX -----END PGP SIGNATURE----- Merge tag 'iomap-5.17' of git://git.infradead.org/users/willy/linux Pull iomap updates from Matthew Wilcox: "Convert xfs/iomap to use folios. This should be all that is needed for XFS to use large folios. There is no code in this pull request to create large folios, but no additional changes should be needed to XFS or iomap once they are created. Usually this would have come from Darrick, and we had intended that it would come that route. Between the holidays and various things which Darrick needed to work on, he asked if I could send things directly. There weren't any other iomap patches pending for this release, which probably also played a role" * tag 'iomap-5.17' of git://git.infradead.org/users/willy/linux: (26 commits) iomap: Inline __iomap_zero_iter into its caller xfs: Support large folios iomap: Support large folios in invalidatepage iomap: Convert iomap_migrate_page() to use folios iomap: Convert iomap_add_to_ioend() to take a folio iomap: Simplify iomap_do_writepage() iomap: Simplify iomap_writepage_map() iomap,xfs: Convert ->discard_page to ->discard_folio iomap: Convert iomap_write_end_inline to take a folio iomap: Convert iomap_write_begin() and iomap_write_end() to folios iomap: Convert __iomap_zero_iter to use a folio iomap: Allow iomap_write_begin() to be called with the full length iomap: Convert iomap_page_mkwrite to use a folio iomap: Convert readahead and readpage to use a folio iomap: Convert iomap_read_inline_data to take a folio iomap: Use folio offsets instead of page offsets iomap: Convert bio completions to use folios iomap: Pass the iomap_page into iomap_set_range_uptodate iomap: Add iomap_invalidate_folio iomap: Convert iomap_releasepage to use a folio ...
390 lines
8 KiB
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390 lines
8 KiB
ReStructuredText
====================
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The Linux Kernel API
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====================
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List Management Functions
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=========================
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.. kernel-doc:: include/linux/list.h
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:internal:
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Basic C Library Functions
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=========================
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When writing drivers, you cannot in general use routines which are from
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the C Library. Some of the functions have been found generally useful
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and they are listed below. The behaviour of these functions may vary
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slightly from those defined by ANSI, and these deviations are noted in
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the text.
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String Conversions
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------------------
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.. kernel-doc:: lib/vsprintf.c
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:export:
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.. kernel-doc:: include/linux/kstrtox.h
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:functions: kstrtol kstrtoul
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.. kernel-doc:: lib/kstrtox.c
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:export:
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.. kernel-doc:: lib/string_helpers.c
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:export:
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String Manipulation
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-------------------
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.. kernel-doc:: lib/string.c
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:export:
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.. kernel-doc:: include/linux/string.h
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:internal:
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.. kernel-doc:: mm/util.c
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:functions: kstrdup kstrdup_const kstrndup kmemdup kmemdup_nul memdup_user
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vmemdup_user strndup_user memdup_user_nul
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Basic Kernel Library Functions
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==============================
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The Linux kernel provides more basic utility functions.
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Bit Operations
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--------------
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.. kernel-doc:: include/asm-generic/bitops/instrumented-atomic.h
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:internal:
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.. kernel-doc:: include/asm-generic/bitops/instrumented-non-atomic.h
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:internal:
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.. kernel-doc:: include/asm-generic/bitops/instrumented-lock.h
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:internal:
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Bitmap Operations
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-----------------
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.. kernel-doc:: lib/bitmap.c
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:doc: bitmap introduction
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.. kernel-doc:: include/linux/bitmap.h
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:doc: declare bitmap
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.. kernel-doc:: include/linux/bitmap.h
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:doc: bitmap overview
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.. kernel-doc:: include/linux/bitmap.h
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:doc: bitmap bitops
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.. kernel-doc:: lib/bitmap.c
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:export:
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.. kernel-doc:: lib/bitmap.c
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:internal:
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.. kernel-doc:: include/linux/bitmap.h
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:internal:
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Command-line Parsing
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--------------------
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.. kernel-doc:: lib/cmdline.c
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:export:
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Sorting
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-------
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.. kernel-doc:: lib/sort.c
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:export:
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.. kernel-doc:: lib/list_sort.c
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:export:
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Text Searching
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--------------
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.. kernel-doc:: lib/textsearch.c
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:doc: ts_intro
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.. kernel-doc:: lib/textsearch.c
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:export:
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.. kernel-doc:: include/linux/textsearch.h
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:functions: textsearch_find textsearch_next \
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textsearch_get_pattern textsearch_get_pattern_len
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CRC and Math Functions in Linux
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===============================
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CRC Functions
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-------------
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.. kernel-doc:: lib/crc4.c
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:export:
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.. kernel-doc:: lib/crc7.c
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:export:
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.. kernel-doc:: lib/crc8.c
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:export:
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.. kernel-doc:: lib/crc16.c
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:export:
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.. kernel-doc:: lib/crc32.c
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.. kernel-doc:: lib/crc-ccitt.c
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:export:
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.. kernel-doc:: lib/crc-itu-t.c
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:export:
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Base 2 log and power Functions
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------------------------------
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.. kernel-doc:: include/linux/log2.h
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:internal:
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Integer power Functions
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-----------------------
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.. kernel-doc:: lib/math/int_pow.c
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:export:
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.. kernel-doc:: lib/math/int_sqrt.c
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:export:
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Division Functions
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------------------
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.. kernel-doc:: include/asm-generic/div64.h
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:functions: do_div
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.. kernel-doc:: include/linux/math64.h
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:internal:
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.. kernel-doc:: lib/math/div64.c
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:functions: div_s64_rem div64_u64_rem div64_u64 div64_s64
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.. kernel-doc:: lib/math/gcd.c
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:export:
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UUID/GUID
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---------
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.. kernel-doc:: lib/uuid.c
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:export:
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Kernel IPC facilities
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=====================
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IPC utilities
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-------------
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.. kernel-doc:: ipc/util.c
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:internal:
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FIFO Buffer
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===========
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kfifo interface
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---------------
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.. kernel-doc:: include/linux/kfifo.h
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:internal:
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relay interface support
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=======================
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Relay interface support is designed to provide an efficient mechanism
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for tools and facilities to relay large amounts of data from kernel
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space to user space.
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relay interface
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---------------
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.. kernel-doc:: kernel/relay.c
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:export:
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.. kernel-doc:: kernel/relay.c
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:internal:
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Module Support
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==============
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Module Loading
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--------------
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.. kernel-doc:: kernel/kmod.c
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:export:
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Inter Module support
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--------------------
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Refer to the file kernel/module.c for more information.
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Hardware Interfaces
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===================
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DMA Channels
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------------
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.. kernel-doc:: kernel/dma.c
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:export:
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Resources Management
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--------------------
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.. kernel-doc:: kernel/resource.c
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:internal:
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.. kernel-doc:: kernel/resource.c
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:export:
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MTRR Handling
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-------------
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.. kernel-doc:: arch/x86/kernel/cpu/mtrr/mtrr.c
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:export:
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Security Framework
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==================
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.. kernel-doc:: security/security.c
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:internal:
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.. kernel-doc:: security/inode.c
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:export:
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Audit Interfaces
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================
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.. kernel-doc:: kernel/audit.c
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:export:
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.. kernel-doc:: kernel/auditsc.c
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:internal:
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.. kernel-doc:: kernel/auditfilter.c
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:internal:
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Accounting Framework
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====================
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.. kernel-doc:: kernel/acct.c
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:internal:
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Block Devices
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=============
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.. kernel-doc:: include/linux/bio.h
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.. kernel-doc:: block/blk-core.c
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:export:
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.. kernel-doc:: block/blk-core.c
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:internal:
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.. kernel-doc:: block/blk-map.c
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:export:
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.. kernel-doc:: block/blk-sysfs.c
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:internal:
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.. kernel-doc:: block/blk-settings.c
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:export:
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.. kernel-doc:: block/blk-flush.c
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:export:
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.. kernel-doc:: block/blk-lib.c
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:export:
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.. kernel-doc:: block/blk-integrity.c
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:export:
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.. kernel-doc:: kernel/trace/blktrace.c
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:internal:
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.. kernel-doc:: block/genhd.c
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:internal:
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.. kernel-doc:: block/genhd.c
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:export:
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.. kernel-doc:: block/bdev.c
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:export:
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Char devices
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============
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.. kernel-doc:: fs/char_dev.c
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:export:
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Clock Framework
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===============
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The clock framework defines programming interfaces to support software
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management of the system clock tree. This framework is widely used with
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System-On-Chip (SOC) platforms to support power management and various
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devices which may need custom clock rates. Note that these "clocks"
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don't relate to timekeeping or real time clocks (RTCs), each of which
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have separate frameworks. These :c:type:`struct clk <clk>`
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instances may be used to manage for example a 96 MHz signal that is used
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to shift bits into and out of peripherals or busses, or otherwise
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trigger synchronous state machine transitions in system hardware.
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Power management is supported by explicit software clock gating: unused
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clocks are disabled, so the system doesn't waste power changing the
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state of transistors that aren't in active use. On some systems this may
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be backed by hardware clock gating, where clocks are gated without being
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disabled in software. Sections of chips that are powered but not clocked
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may be able to retain their last state. This low power state is often
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called a *retention mode*. This mode still incurs leakage currents,
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especially with finer circuit geometries, but for CMOS circuits power is
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mostly used by clocked state changes.
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Power-aware drivers only enable their clocks when the device they manage
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is in active use. Also, system sleep states often differ according to
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which clock domains are active: while a "standby" state may allow wakeup
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from several active domains, a "mem" (suspend-to-RAM) state may require
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a more wholesale shutdown of clocks derived from higher speed PLLs and
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oscillators, limiting the number of possible wakeup event sources. A
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driver's suspend method may need to be aware of system-specific clock
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constraints on the target sleep state.
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Some platforms support programmable clock generators. These can be used
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by external chips of various kinds, such as other CPUs, multimedia
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codecs, and devices with strict requirements for interface clocking.
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.. kernel-doc:: include/linux/clk.h
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:internal:
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Synchronization Primitives
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==========================
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Read-Copy Update (RCU)
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----------------------
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.. kernel-doc:: include/linux/rcupdate.h
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.. kernel-doc:: kernel/rcu/tree.c
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.. kernel-doc:: kernel/rcu/tree_exp.h
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.. kernel-doc:: kernel/rcu/update.c
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.. kernel-doc:: include/linux/srcu.h
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.. kernel-doc:: kernel/rcu/srcutree.c
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.. kernel-doc:: include/linux/rculist_bl.h
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.. kernel-doc:: include/linux/rculist.h
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.. kernel-doc:: include/linux/rculist_nulls.h
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.. kernel-doc:: include/linux/rcu_sync.h
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.. kernel-doc:: kernel/rcu/sync.c
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