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d4ef8d3ff0
clang-format is a tool to format C/C++/... code according to a set of rules and heuristics. Like most tools, it is not perfect nor covers every single case, but it is good enough to be helpful. In particular, it is useful for quickly re-formatting blocks of code automatically, for reviewing full files in order to spot coding style mistakes, typos and possible improvements. It is also handy for sorting ``#includes``, for aligning variables and macros, for reflowing text and other similar tasks. It also serves as a teaching tool/guide for newcomers. The tool itself has been already included in the repositories of popular Linux distributions for a long time. The rules in this file are intended for clang-format >= 4, which is easily available in most distributions. This commit adds the configuration file that contains the rules that the tool uses to know how to format the code according to the kernel coding style. This gives us several advantages: * clang-format works out of the box with reasonable defaults; avoiding that everyone has to re-do the configuration. * Everyone agrees (eventually) on what is the most useful default configuration for most of the kernel. * If it becomes commonplace among kernel developers, clang-format may feel compelled to support us better. They already recognize the Linux kernel and its style in their documentation and in one of the style sub-options. Some of clang-format's features relevant for the kernel are: * Uses clang's tooling support behind the scenes to parse and rewrite the code. It is not based on ad-hoc regexps. * Supports reasonably well the Linux kernel coding style. * Fast enough to be used at the press of a key. * There are already integrations (either built-in or third-party) for many common editors used by kernel developers (e.g. vim, emacs, Sublime, Atom...) that allow you to format an entire file or, more usefully, just your selection. * Able to parse unified diffs -- you can, for instance, reformat only the lines changed by a git commit. * Able to reflow text comments as well. * Widely supported and used by hundreds of developers in highly complex projects and organizations (e.g. the LLVM project itself, Chromium, WebKit, Google, Mozilla...). Therefore, it will be supported for a long time. See more information about the tool at: https://clang.llvm.org/docs/ClangFormat.html https://clang.llvm.org/docs/ClangFormatStyleOptions.html Link: http://lkml.kernel.org/r/20180318171632.qfkemw3mwbcukth6@gmail.com Signed-off-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Andy Whitcroft <apw@canonical.com> Cc: Joe Perches <joe@perches.com> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
429 lines
13 KiB
YAML
429 lines
13 KiB
YAML
# SPDX-License-Identifier: GPL-2.0
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#
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# clang-format configuration file. Intended for clang-format >= 4.
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#
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# For more information, see:
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#
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# Documentation/process/clang-format.rst
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# https://clang.llvm.org/docs/ClangFormat.html
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# https://clang.llvm.org/docs/ClangFormatStyleOptions.html
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#
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---
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AccessModifierOffset: -4
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AlignAfterOpenBracket: Align
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AlignConsecutiveAssignments: false
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AlignConsecutiveDeclarations: false
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#AlignEscapedNewlines: Left # Unknown to clang-format-4.0
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AlignOperands: true
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AlignTrailingComments: false
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AllowAllParametersOfDeclarationOnNextLine: false
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AllowShortBlocksOnASingleLine: false
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AllowShortCaseLabelsOnASingleLine: false
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AllowShortFunctionsOnASingleLine: None
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AllowShortIfStatementsOnASingleLine: false
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AllowShortLoopsOnASingleLine: false
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AlwaysBreakAfterDefinitionReturnType: None
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AlwaysBreakAfterReturnType: None
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AlwaysBreakBeforeMultilineStrings: false
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AlwaysBreakTemplateDeclarations: false
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BinPackArguments: true
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BinPackParameters: true
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BraceWrapping:
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AfterClass: false
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AfterControlStatement: false
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AfterEnum: false
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AfterFunction: true
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AfterNamespace: true
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AfterObjCDeclaration: false
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AfterStruct: false
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AfterUnion: false
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#AfterExternBlock: false # Unknown to clang-format-5.0
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BeforeCatch: false
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BeforeElse: false
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IndentBraces: false
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#SplitEmptyFunction: true # Unknown to clang-format-4.0
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#SplitEmptyRecord: true # Unknown to clang-format-4.0
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#SplitEmptyNamespace: true # Unknown to clang-format-4.0
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BreakBeforeBinaryOperators: None
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BreakBeforeBraces: Custom
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#BreakBeforeInheritanceComma: false # Unknown to clang-format-4.0
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BreakBeforeTernaryOperators: false
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BreakConstructorInitializersBeforeComma: false
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#BreakConstructorInitializers: BeforeComma # Unknown to clang-format-4.0
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BreakAfterJavaFieldAnnotations: false
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BreakStringLiterals: false
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ColumnLimit: 80
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CommentPragmas: '^ IWYU pragma:'
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#CompactNamespaces: false # Unknown to clang-format-4.0
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ConstructorInitializerAllOnOneLineOrOnePerLine: false
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ConstructorInitializerIndentWidth: 8
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ContinuationIndentWidth: 8
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Cpp11BracedListStyle: false
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DerivePointerAlignment: false
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DisableFormat: false
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ExperimentalAutoDetectBinPacking: false
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#FixNamespaceComments: false # Unknown to clang-format-4.0
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# Taken from:
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# git grep -h '^#define [^[:space:]]*for_each[^[:space:]]*(' include/ \
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# | sed "s,^#define \([^[:space:]]*for_each[^[:space:]]*\)(.*$, - '\1'," \
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# | sort | uniq
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ForEachMacros:
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- 'apei_estatus_for_each_section'
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- 'ata_for_each_dev'
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- 'ata_for_each_link'
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- 'ax25_for_each'
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- 'ax25_uid_for_each'
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- 'bio_for_each_integrity_vec'
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- '__bio_for_each_segment'
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- 'bio_for_each_segment'
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- 'bio_for_each_segment_all'
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- 'bio_list_for_each'
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- 'bip_for_each_vec'
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- 'blkg_for_each_descendant_post'
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- 'blkg_for_each_descendant_pre'
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- 'blk_queue_for_each_rl'
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- 'bond_for_each_slave'
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- 'bond_for_each_slave_rcu'
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- 'btree_for_each_safe128'
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- 'btree_for_each_safe32'
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- 'btree_for_each_safe64'
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- 'btree_for_each_safel'
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- 'card_for_each_dev'
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- 'cgroup_taskset_for_each'
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- 'cgroup_taskset_for_each_leader'
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- 'cpufreq_for_each_entry'
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- 'cpufreq_for_each_entry_idx'
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- 'cpufreq_for_each_valid_entry'
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- 'cpufreq_for_each_valid_entry_idx'
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- 'css_for_each_child'
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- 'css_for_each_descendant_post'
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- 'css_for_each_descendant_pre'
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- 'device_for_each_child_node'
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- 'drm_atomic_crtc_for_each_plane'
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- 'drm_atomic_crtc_state_for_each_plane'
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- 'drm_atomic_crtc_state_for_each_plane_state'
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- 'drm_for_each_connector_iter'
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- 'drm_for_each_crtc'
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- 'drm_for_each_encoder'
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- 'drm_for_each_encoder_mask'
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- 'drm_for_each_fb'
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- 'drm_for_each_legacy_plane'
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- 'drm_for_each_plane'
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- 'drm_for_each_plane_mask'
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- 'drm_mm_for_each_hole'
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- 'drm_mm_for_each_node'
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- 'drm_mm_for_each_node_in_range'
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- 'drm_mm_for_each_node_safe'
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- 'for_each_active_drhd_unit'
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- 'for_each_active_iommu'
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- 'for_each_available_child_of_node'
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- 'for_each_bio'
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- 'for_each_board_func_rsrc'
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- 'for_each_bvec'
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- 'for_each_child_of_node'
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- 'for_each_clear_bit'
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- 'for_each_clear_bit_from'
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- 'for_each_cmsghdr'
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- 'for_each_compatible_node'
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- 'for_each_console'
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- 'for_each_cpu'
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- 'for_each_cpu_and'
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- 'for_each_cpu_not'
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- 'for_each_cpu_wrap'
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- 'for_each_dev_addr'
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- 'for_each_dma_cap_mask'
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- 'for_each_drhd_unit'
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- 'for_each_dss_dev'
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- 'for_each_efi_memory_desc'
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- 'for_each_efi_memory_desc_in_map'
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- 'for_each_endpoint_of_node'
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- 'for_each_evictable_lru'
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- 'for_each_fib6_node_rt_rcu'
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- 'for_each_fib6_walker_rt'
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- 'for_each_free_mem_range'
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- 'for_each_free_mem_range_reverse'
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- 'for_each_func_rsrc'
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- 'for_each_hstate'
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- 'for_each_if'
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- 'for_each_iommu'
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- 'for_each_ip_tunnel_rcu'
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- 'for_each_irq_nr'
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- 'for_each_lru'
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- 'for_each_matching_node'
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- 'for_each_matching_node_and_match'
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- 'for_each_memblock'
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- 'for_each_memblock_type'
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- 'for_each_memcg_cache_index'
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- 'for_each_mem_pfn_range'
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- 'for_each_mem_range'
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- 'for_each_mem_range_rev'
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- 'for_each_migratetype_order'
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- 'for_each_msi_entry'
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- 'for_each_net'
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- 'for_each_netdev'
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- 'for_each_netdev_continue'
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- 'for_each_netdev_continue_rcu'
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- 'for_each_netdev_feature'
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- 'for_each_netdev_in_bond_rcu'
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- 'for_each_netdev_rcu'
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- 'for_each_netdev_reverse'
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- 'for_each_netdev_safe'
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- 'for_each_net_rcu'
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- 'for_each_new_connector_in_state'
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- 'for_each_new_crtc_in_state'
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- 'for_each_new_plane_in_state'
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- 'for_each_new_private_obj_in_state'
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- 'for_each_node'
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- 'for_each_node_by_name'
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- 'for_each_node_by_type'
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- 'for_each_node_mask'
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- 'for_each_node_state'
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- 'for_each_node_with_cpus'
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- 'for_each_node_with_property'
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- 'for_each_of_allnodes'
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- 'for_each_of_allnodes_from'
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- 'for_each_of_pci_range'
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- 'for_each_old_connector_in_state'
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- 'for_each_old_crtc_in_state'
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- 'for_each_oldnew_connector_in_state'
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- 'for_each_oldnew_crtc_in_state'
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- 'for_each_oldnew_plane_in_state'
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- 'for_each_oldnew_private_obj_in_state'
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- 'for_each_old_plane_in_state'
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- 'for_each_old_private_obj_in_state'
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- 'for_each_online_cpu'
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- 'for_each_online_node'
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- 'for_each_online_pgdat'
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- 'for_each_pci_bridge'
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- 'for_each_pci_dev'
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- 'for_each_pci_msi_entry'
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- 'for_each_populated_zone'
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- 'for_each_possible_cpu'
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- 'for_each_present_cpu'
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- 'for_each_prime_number'
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- 'for_each_prime_number_from'
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- 'for_each_process'
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- 'for_each_process_thread'
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- 'for_each_property_of_node'
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- 'for_each_reserved_mem_region'
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- 'for_each_resv_unavail_range'
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- 'for_each_rtdcom'
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- 'for_each_rtdcom_safe'
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- 'for_each_set_bit'
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- 'for_each_set_bit_from'
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- 'for_each_sg'
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- 'for_each_sg_page'
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- '__for_each_thread'
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- 'for_each_thread'
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- 'for_each_zone'
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- 'for_each_zone_zonelist'
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- 'for_each_zone_zonelist_nodemask'
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- 'fwnode_for_each_available_child_node'
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- 'fwnode_for_each_child_node'
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- 'fwnode_graph_for_each_endpoint'
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- 'gadget_for_each_ep'
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- 'hash_for_each'
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- 'hash_for_each_possible'
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- 'hash_for_each_possible_rcu'
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- 'hash_for_each_possible_rcu_notrace'
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- 'hash_for_each_possible_safe'
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- 'hash_for_each_rcu'
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- 'hash_for_each_safe'
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- 'hctx_for_each_ctx'
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- 'hlist_bl_for_each_entry'
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- 'hlist_bl_for_each_entry_rcu'
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- 'hlist_bl_for_each_entry_safe'
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- 'hlist_for_each'
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- 'hlist_for_each_entry'
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- 'hlist_for_each_entry_continue'
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- 'hlist_for_each_entry_continue_rcu'
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- 'hlist_for_each_entry_continue_rcu_bh'
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- 'hlist_for_each_entry_from'
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- 'hlist_for_each_entry_from_rcu'
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- 'hlist_for_each_entry_rcu'
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- 'hlist_for_each_entry_rcu_bh'
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- 'hlist_for_each_entry_rcu_notrace'
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- 'hlist_for_each_entry_safe'
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- '__hlist_for_each_rcu'
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- 'hlist_for_each_safe'
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- 'hlist_nulls_for_each_entry'
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- 'hlist_nulls_for_each_entry_from'
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- 'hlist_nulls_for_each_entry_rcu'
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- 'hlist_nulls_for_each_entry_safe'
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- 'ide_host_for_each_port'
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- 'ide_port_for_each_dev'
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- 'ide_port_for_each_present_dev'
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- 'idr_for_each_entry'
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- 'idr_for_each_entry_continue'
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- 'idr_for_each_entry_ul'
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- 'inet_bind_bucket_for_each'
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- 'inet_lhash2_for_each_icsk_rcu'
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- 'iov_for_each'
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- 'key_for_each'
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- 'key_for_each_safe'
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- 'klp_for_each_func'
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- 'klp_for_each_object'
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- 'kvm_for_each_memslot'
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- 'kvm_for_each_vcpu'
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- 'list_for_each'
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- 'list_for_each_entry'
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- 'list_for_each_entry_continue'
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- 'list_for_each_entry_continue_rcu'
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- 'list_for_each_entry_continue_reverse'
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- 'list_for_each_entry_from'
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- 'list_for_each_entry_from_reverse'
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- 'list_for_each_entry_lockless'
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- 'list_for_each_entry_rcu'
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- 'list_for_each_entry_reverse'
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- 'list_for_each_entry_safe'
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- 'list_for_each_entry_safe_continue'
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- 'list_for_each_entry_safe_from'
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- 'list_for_each_entry_safe_reverse'
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- 'list_for_each_prev'
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- 'list_for_each_prev_safe'
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- 'list_for_each_safe'
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- 'llist_for_each'
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- 'llist_for_each_entry'
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- 'llist_for_each_entry_safe'
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- 'llist_for_each_safe'
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- 'media_device_for_each_entity'
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- 'media_device_for_each_intf'
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- 'media_device_for_each_link'
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- 'media_device_for_each_pad'
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- 'netdev_for_each_lower_dev'
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- 'netdev_for_each_lower_private'
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- 'netdev_for_each_lower_private_rcu'
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- 'netdev_for_each_mc_addr'
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- 'netdev_for_each_uc_addr'
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- 'netdev_for_each_upper_dev_rcu'
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- 'netdev_hw_addr_list_for_each'
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- 'nft_rule_for_each_expr'
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- 'nla_for_each_attr'
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- 'nla_for_each_nested'
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- 'nlmsg_for_each_attr'
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- 'nlmsg_for_each_msg'
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- 'nr_neigh_for_each'
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- 'nr_neigh_for_each_safe'
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- 'nr_node_for_each'
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- 'nr_node_for_each_safe'
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- 'of_for_each_phandle'
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- 'of_property_for_each_string'
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- 'of_property_for_each_u32'
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- 'pci_bus_for_each_resource'
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- 'ping_portaddr_for_each_entry'
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- 'plist_for_each'
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- 'plist_for_each_continue'
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- 'plist_for_each_entry'
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- 'plist_for_each_entry_continue'
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- 'plist_for_each_entry_safe'
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- 'plist_for_each_safe'
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- 'pnp_for_each_card'
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- 'pnp_for_each_dev'
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- 'protocol_for_each_card'
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- 'protocol_for_each_dev'
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- 'queue_for_each_hw_ctx'
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- 'radix_tree_for_each_contig'
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- 'radix_tree_for_each_slot'
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- 'radix_tree_for_each_tagged'
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- 'rbtree_postorder_for_each_entry_safe'
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- 'resource_list_for_each_entry'
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- 'resource_list_for_each_entry_safe'
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- 'rhl_for_each_entry_rcu'
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- 'rhl_for_each_rcu'
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- 'rht_for_each'
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- 'rht_for_each_continue'
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- 'rht_for_each_entry'
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- 'rht_for_each_entry_continue'
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- 'rht_for_each_entry_rcu'
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- 'rht_for_each_entry_rcu_continue'
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- 'rht_for_each_entry_safe'
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- 'rht_for_each_rcu'
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- 'rht_for_each_rcu_continue'
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- '__rq_for_each_bio'
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- 'rq_for_each_segment'
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- 'scsi_for_each_prot_sg'
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- 'scsi_for_each_sg'
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- 'sctp_for_each_hentry'
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- 'sctp_skb_for_each'
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- 'shdma_for_each_chan'
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- '__shost_for_each_device'
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- 'shost_for_each_device'
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- 'sk_for_each'
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- 'sk_for_each_bound'
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- 'sk_for_each_entry_offset_rcu'
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- 'sk_for_each_from'
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- 'sk_for_each_rcu'
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- 'sk_for_each_safe'
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- 'sk_nulls_for_each'
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- 'sk_nulls_for_each_from'
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- 'sk_nulls_for_each_rcu'
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- 'snd_pcm_group_for_each_entry'
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- 'snd_soc_dapm_widget_for_each_path'
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- 'snd_soc_dapm_widget_for_each_path_safe'
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- 'snd_soc_dapm_widget_for_each_sink_path'
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- 'snd_soc_dapm_widget_for_each_source_path'
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- 'tb_property_for_each'
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- 'udp_portaddr_for_each_entry'
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- 'udp_portaddr_for_each_entry_rcu'
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- 'usb_hub_for_each_child'
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- 'v4l2_device_for_each_subdev'
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- 'v4l2_m2m_for_each_dst_buf'
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- 'v4l2_m2m_for_each_dst_buf_safe'
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- 'v4l2_m2m_for_each_src_buf'
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- 'v4l2_m2m_for_each_src_buf_safe'
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- 'zorro_for_each_dev'
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#IncludeBlocks: Preserve # Unknown to clang-format-5.0
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IncludeCategories:
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- Regex: '.*'
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Priority: 1
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IncludeIsMainRegex: '(Test)?$'
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IndentCaseLabels: false
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#IndentPPDirectives: None # Unknown to clang-format-5.0
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IndentWidth: 8
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IndentWrappedFunctionNames: true
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JavaScriptQuotes: Leave
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JavaScriptWrapImports: true
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KeepEmptyLinesAtTheStartOfBlocks: false
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MacroBlockBegin: ''
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MacroBlockEnd: ''
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MaxEmptyLinesToKeep: 1
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NamespaceIndentation: Inner
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#ObjCBinPackProtocolList: Auto # Unknown to clang-format-5.0
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ObjCBlockIndentWidth: 8
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ObjCSpaceAfterProperty: true
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ObjCSpaceBeforeProtocolList: true
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# Taken from git's rules
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#PenaltyBreakAssignment: 10 # Unknown to clang-format-4.0
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PenaltyBreakBeforeFirstCallParameter: 30
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PenaltyBreakComment: 10
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PenaltyBreakFirstLessLess: 0
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PenaltyBreakString: 10
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PenaltyExcessCharacter: 100
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PenaltyReturnTypeOnItsOwnLine: 60
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PointerAlignment: Right
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ReflowComments: false
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SortIncludes: false
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#SortUsingDeclarations: false # Unknown to clang-format-4.0
|
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SpaceAfterCStyleCast: false
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|
SpaceAfterTemplateKeyword: true
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SpaceBeforeAssignmentOperators: true
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#SpaceBeforeCtorInitializerColon: true # Unknown to clang-format-5.0
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#SpaceBeforeInheritanceColon: true # Unknown to clang-format-5.0
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SpaceBeforeParens: ControlStatements
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#SpaceBeforeRangeBasedForLoopColon: true # Unknown to clang-format-5.0
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SpaceInEmptyParentheses: false
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SpacesBeforeTrailingComments: 1
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|
SpacesInAngles: false
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SpacesInContainerLiterals: false
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SpacesInCStyleCastParentheses: false
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SpacesInParentheses: false
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SpacesInSquareBrackets: false
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Standard: Cpp03
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TabWidth: 8
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UseTab: Always
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...
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