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2015-07-10Documentation: CodingStyle: remove broken links in the References sectionOlivier C. Larocque1-2/+0
Remove 2 broken links for programming reference books in Appendix I. After a lookup on an Internet archives web site, it seems that these links have been broken for around 3 months. We can then assume that they will not be back up and safely remove them from the documentation. Signed-off-by: Olivier C. Larocque <olivier.c.larocque@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2015-05-07Documentation/CodingStyle: fix example macro parenthesis imbalanceBaruch Siach1-1/+1
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com> Cc: Andrew Morton <akpm@linux-foundation.org> Fixes: f2027543b9 ('documentation: update CodingStyle on local variables naming in macros') Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2015-04-18Merge tag 'docs-for-linus' of git://git.lwn.net/linux-2.6Linus Torvalds1-73/+76
Pull documentation updates from Jonathan Corbet: "Numerous fixes, the overdue removal of the i2o docs, some new Chinese translations, and, hopefully, the README fix that will end the flow of identical patches to that file" * tag 'docs-for-linus' of git://git.lwn.net/linux-2.6: (34 commits) Documentation/memcg: update memcg/kmem status Documentation: blackfin: Makefile: Typo building issue Documentation/vm/pagemap.txt: correct location of page-types tool Documentation/memory-barriers.txt: typo fix doc: Add guest_nice column to example output of `cat /proc/stat' Documentation/kernel-parameters: Move "eagerfpu" to its right place Documentation: gpio: Update ACPI part of the document to mention _DSD docs/completion.txt: Various tweaks and corrections doc: completion: context, scope and language fixes Documentation:Update Documentation/zh_CN/arm64/memory.txt Documentation:Update Documentation/zh_CN/arm64/booting.txt Documentation: Chinese translation of arm64/legacy_instructions.txt DocBook media: fix broken EIA hyperlink Documentation: tweak the maintainers entry README: Change gzip/bzip2 to xz compression format README: Update version number reference doc:pci: Fix typo in Documentation/PCI Documentation: drm: Use '->' when describing access through pointers. Documentation: Remove mentioning of block barriers Documentation/email-clients.txt: Fix one grammar mistake, add extra info about TB ...
2015-04-17documentation: update CodingStyle on local variables naming in macrosBartosz Golaszewski1-0/+13
Describe proper naming convention for local variables in macros resembling functions. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-02-27Documentation/CodingStyle: improve text layoutPavel Kretov1-69/+72
Try to make coding style documentation look a bit more readable and consistent with the following: - indent every code example in C to first tab-stop; - surround every code example with empty lines, both top and bottom; - remove empty lines where text looked way too spare; - do not indent examples in elisp and kconfig; - do not do any non-whitespace changes. Signed-off-by: Pavel Kretov <firegurafiku@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2015-02-27Documentation/CodingStyle: fix tab-spaces mixturePavel Kretov1-4/+4
Coding style description has a irregular mixture of tabs and spaces in two places which is bad by any means and can possibly hurt somebody's sense of beauty. Signed-off-by: Pavel Kretov <firegurafiku@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2015-01-28CodingStyle: enable emacs display of trailing whitespaceAlison Chaiken1-0/+1
Suggest to developers who use emacs that they turn on the instantaneous trailing-whitespace warning feature. Signed-off-by: Alison Chaiken <alison_chaiken@mentor.com> [jc: untabified to match its surroundings] Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2014-12-02CodingStyle: add some more error handling guidelinesDan Carpenter1-5/+22
I added a paragraph on choosing label names, and updated the example code to use a better label name. I also cleaned up the example code to more modern style by moving the allocation out of the initializer and changing the NULL check. Perhaps the most common type of error handling bug in the kernel is "one err bugs". CodingStyle already says that we should "avoid nesting" by using error labels and one err style error handling tends to have multiple indent levels, so this was already bad style. But I've added a new paragraph explaining how to avoid one err bugs by using multiple error labels which is, hopefully, more clear. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Julia Lawall <julia.lawall@lip6.fr> [jc: added GFP_KERNEL to kmalloc() call] Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2014-11-03CodingStyle: Add a chapter on conditional compilationJosh Triplett1-0/+43
Document several common practices and conventions regarding conditional compilation, most notably the preference for ifdefs in headers rather than .c files. Signed-off-by: Josh Triplett <josh@joshtriplett.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2014-08-26CodingStyle: fix a minor typoRaymond L. Rivera1-1/+1
There was a minor typo in the CodingStyle document where the word 'section' had been spelled as 'secton'. Signed-off-by: Raymond L. Rivera <ray.l.rivera@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-06-04Documentation: expand/clarify debug documentationDan Streetman1-7/+15
The pr_debug() and related debug print macros all differ from the normal pr_XXX() macros, in that the normal ones print unconditionally, while the debug macros are compiled out unless DEBUG is defined or CONFIG_DYNAMIC_DEBUG is set. This isn't obvious, and the only way to find this out is either to review the actual printk.h code or to read CodingStyle, and the message there doesn't highlight the fact. Change Documentation/CodingStyle to clearly indicate that pr_debug() and related debug printing macros behave differently than all other pr_XXX() macros, and attempt to clarify when and where the different debug printing methods might be used. Add short comment to printk.h above the pr_XXX() macros indicating that while these macros print unconditionally, pr_debug() does not. Signed-off-by: Dan Streetman <ddstreet@ieee.org> Cc: Joe Perches <joe@perches.com> Cc: Fabian Frederick <fabf@skynet.be> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03Documentation/CodingStyle: allow multiple return statements per functionDan Carpenter1-1/+2
A surprising number of newbies interpret this section to mean that only one return statement is allowed per function. Part of the problem is that the "one return statement per function" rule is an actual style guideline that people are used to from other projects. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: Eduardo Valentin <eduardo.valentin@ti.com> Cc: Rob Landley <rob@landley.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-01-11Documentation: remove depends on CONFIG_EXPERIMENTALKees Cook1-9/+1
The CONFIG_EXPERIMENTAL config item has not carried much meaning for a while now and is almost always enabled by default. As agreed during the Linux kernel summit, remove it from any "depends on" lines in Kconfigs. CC: Rob Landley <rob@landley.net> CC: Jiri Kosina <jkosina@suse.cz> CC: Masanari Iida <standby24x7@gmail.com> CC: Jason Wessel <jason.wessel@windriver.com> CC: Richard L Maliszewski <richard.l.maliszewski@intel.com> CC: Gang Wei <gang.wei@intel.com> CC: Shane Wang <shane.wang@intel.com> CC: Harry Wei <harryxiyou@gmail.com> Signed-off-by: Kees Cook <keescook@chromium.org> Acked-by: Jason Wessel <jason.wessel@windriver.com>
2012-10-06CodingStyle: add networking specific block comment styleJoe Perches1-0/+10
The block comment style in net/ and drivers/net is non-standard. Document it. Signed-off-by: Joe Perches <joe@perches.com> Cc: "Allan, Bruce W" <bruce.w.allan@intel.com> Cc: Andy Whitcroft <apw@canonical.com> Cc: David Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-05-31CodingStyle: add kmalloc_array() to memory allocatorsXi Wang1-2/+14
Add the new kmalloc_array() to the list of general-purpose memory allocators in chapter 14. Signed-off-by: Xi Wang <xi.wang@gmail.com> Acked-by: Jesper Juhl <jj@chaosbits.net> Acked-by: Pekka Enberg <penberg@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-30Documentation: CodingStyle: add inline assembly guidelinesJosh Triplett1-0/+29
Signed-off-by: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-11-04Documentation: update CodingStyle use of bracesAntonio Ospite1-2/+2
After commit 38829dc9d7b4 ("Documentation/CodingStyle: flesh out if-else examples") highlight that if _only_one_ branch of a conditional statement is a single statement, then braces are to be used on both branches. Signed-off-by: Antonio Ospite <ospite@studenti.unina.it> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-06CodingStyle: Document the exception of not splitting user-visible strings, ↵Josh Triplett1-16/+7
for grepping Patch reviewers now recommend not splitting long user-visible strings, such as printk messages, even if they exceed 80 columns. This avoids breaking grep. However, that recommendation did not actually appear anywhere in Documentation/CodingStyle. See, for example, the thread at http://news.gmane.org/find-root.php?message_id=%3c1312215262.11635.15.camel%40Joe%2dLaptop%3e Signed-off-by: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-06Documentation: update CodingStyle memory allocatorsJesper Juhl1-2/+2
The list of available general purpose memory allocators in Documentation/CodingStyle chapter 14 is incomplete. This patch adds the missing vzalloc() to the list. Signed-off-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22Documentation/CodingStyle: flesh out if-else examplesHarry Wei1-0/+7
There is a missing case for "Chapter 3: Placing Braces and Spaces". We often know we should not use braces where a single statement. The first case is: if (condition) action(); Another case is: if (condition) do_this(); else do_that(); However, I can not find a description of the second case. Signed-off-by: Harry Wei <harryxiyou@gmail.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-16Documentation: update header filename in CodingStyleRoland Kammerer1-4/+1
pr_info() and pr_debug() are in linux/printk.h, not linux/kernel.h. Last updated is unnecessary, we have git for that. Signed-off-by: Roland Kammerer <dev.rck@gmail.com> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: Harry Wei <harryxiyou@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-12trivial: fix typo milisecond/millisecond for documentation and source comments.Martin Olsson1-2/+2
Signed-off-by: Martin Olsson <martin@minimum.se> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-01-29fix emacs indenting howto filename expansionDan Carpenter1-1/+2
I don't think emacs understands tilde expansion, so use "expand-file-name" to do that. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-29Documentation: update CodingStyle tips for Emacs usersTeemu Likonen1-4/+11
With the previous Emacs tips example the kernel style was made available for files in the kernel-tree only. This patch updates the tip to add a separate cc-mode indent style ("linux-tabs-only"). This makes it easy to switch between different indent styles and also makes the kernel style easily available for any filetype mode (c++, awk, ...) that is managed by the Emacs cc-mode. Signed-off-by: Teemu Likonen <tlikonen@iki.fi> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-25documentation: update CodingStyle tips for Emacs usersJohannes Weiner1-19/+23
Describe a setup that integrates better with Emacs' cc-mode and also fixes up the alignment of continuation lines to really only use tabs. Signed-off-by: Johannes Weiner <hannes@saeurebad.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17CodingStyle: relax the 80-cole ruleAlan Cox1-2/+5
I would suggest this change to make CodingStyle properly reflect the style used by the kernel, rather than the current wording which is wishful thinking and misleading, and comes from the same school of thought that gets off on prescriptive grammar, latin and comp.std.c Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-18dev_vdbg() documentationDavid Brownell1-2/+18
Update CodingStyle to talk about "-DDEBUG" message conventions and the new "-DVERBOSE_DEBUG" convention. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-16CodingStyle: add information about editor modelinesJosh Triplett1-0/+27
I recently received a patch including a file that had a vim modeline, and I realized that nothing specifically proscribed that practice. Signed-off-by: Josh Triplett <josh@freedesktop.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-16CodingStyle: add information about trailing whitespaceJosh Triplett1-0/+12
Signed-off-by: Josh Triplett <josh@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-23Documentation: fix the explanation of Kconfig filesRobert P. J. Day1-19/+30
Fix the obvious errors in the explanation of Kconfig files. Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08Fix chapter reference in CodingStyleJesper Juhl1-1/+1
commit 226a6b84aaaf1fac7a5d41cf4e7387fd9ba895d5 renumbered Chapter 11 in Documentation/CodingStyle to Chapter 12, but it didn't update the reference to that chapter further down in the file. This patch corrects the chapter reference. Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08CodingStyle: start flamewar about use of bracesOliver Neukum1-0/+15
Signed-off-by: Oliver Neukum <oneukum@suse.de> Cc: Tilman Schmidt <tilman@imap.cc> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2006-12-22[PATCH] Add a new section to CodingStyle, promoting include/linux/kernel.hRobert P. J. Day1-0/+18
Add a new section to the CodingStyle file, encouraging people not to re-invent available kernel macros such as ARRAY_SIZE(), FIELD_SIZEOF(), min() and max(), among others. Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: Jan Engelhardt <jengelh@gmx.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-10[PATCH] CodingStyle updatesRandy Dunlap1-5/+121
Add some kernel coding style comments, mostly pulled from emails by Andrew Morton, Jesper Juhl, and Randy Dunlap. - add paragraph on switch/case indentation (with fixes) - add paragraph on multiple-assignments - add more on Braces - add section on Spaces; add typeof, alignof, & __attribute__ with sizeof; add more on postfix/prefix increment/decrement operators - add paragraph on function breaks in source files; add info on function prototype parameter names - add paragraph on EXPORT_SYMBOL placement - add section on /*-comment style, long-comment style, and data declarations and comments - correct some chapter number references that were missed when chapters were renumbered Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: Jesper Juhl <jesper.juhl@gmail.com> Acked-by: Jan Engelhardt <jengelh@gmx.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-29[PATCH] Add section on function return values to CodingStyleAlan Stern1-0/+34
This patch (as776) adds a new chapter to Documentation/CodingStyle, explaining the circumstances under which a function should return 0 for failure and non-zero for success as opposed to a negative error code for failure and 0 for success. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-23[PATCH] CodingStyle: add typedefs chapterRandy Dunlap1-12/+88
Add a chapter on typedefs, copied from an email from Linus to lkml on Feb. 3, 2006. (Subject: Re: [RFC][PATCH 1/5] Virtualization/containers: startup) Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-10[PATCH] CodingStyle correctionJesper Juhl1-1/+1
Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-08[PATCH] Add a section about inlining to Documentation/CodingStyleArjan van de Ven1-3/+31
Adds a bit of text to Documentation/Codingstyle to state that inlining everything "just because" is a bad idea Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-08[PATCH] docs: updated some code docsXose Vazquez Perez1-2/+5
Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-17[PATCH] CodingStyle: memory allocationPekka J Enberg1-1/+20
This patch adds a new chapter on memory allocation to Documentation/CodingStyle. Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-10[PATCH] Add kerneldoc reference to CodingStylePekka J Enberg1-0/+3
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-16Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds1-0/+431
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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