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Hi Linus, Please, pull the following tree-wide patch that replaces tons (2484) of /* fall through */ comments, and its variants, with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. There are currently 1167 intances of this fallthrough pseudo-keyword macro in mainline (5.9-rc2), that have been introduced over the last couple of development cycles: $ git grep -nw 'fallthrough;' | wc -l 1167 The global adoption of the fallthrough pseudo-keyword is something certain to happen; so, better sooner than later. :) This will also save everybody's time and thousands of lines of unnecessarily repetitive changelog text. After applying this patch on top of 5.9-rc2, we'll have a total of 3651 instances of this macro: $ git grep -nw 'fallthrough;' | wc -l 3651 This treewide patch doesn't address ALL fall-through markings in all subsystems at once because I have previously sent out patches for some of such subsystems separately, and I will follow up on them; however, this definitely contributes most of the work needed to replace all the fall-through markings with the fallthrough pseudo-keyword macro in the whole codebase. I have build-tested this patch on 10 different architectures: x86_64, i386, arm64, powerpc, s390, sparc64, sh, m68k, powerpc64 and alpha (allyesconfig for all of them). This is in linux-next already and kernel test robot has also helped me to successfully build-test early versions of this patch[2][3][4][5]. Thanks -- [1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through [2] https://lore.kernel.org/lkml/5f3cc99a.HgvOW3rH0mD0RmkM%25lkp@intel.com/ [3] https://lore.kernel.org/lkml/5f3dd1d2.l1axczH+t4hMBZ63%25lkp@intel.com/ [4] https://lore.kernel.org/lkml/5f3e977a.mwYHUIObbR4SHr0B%25lkp@intel.com/ [5] https://lore.kernel.org/lkml/5f3f9e1c.qsyb%2FaySkiXNpkO4%25lkp@intel.com/ -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEkmRahXBSurMIg1YvRwW0y0cG2zEFAl9DNZsACgkQRwW0y0cG 2zH47g//ZgQ06xvigu5Tz/0B4cDKZyrZDY0yXGPmv4yO189BSBHPHuvj1jiIptyw Ra3mYQWsQ5X8QhQXC+kEWAzK0YBOYYAJIlz/B6lycMOBKz3bbZHfb2hAFl4b2okg CoUqjrTU/TBDGW9ih1elng61jafCMsFIJnLNFSZqlb3PxTwSMPSqAj6BD6aD3z1M gRprSIHcNBprpzRY9bdkm0kX2UNC+jg53xneeN55g/4Jl9GDlH0SiIpCVXZy1KjN 3BUo3lbdknY4rEkP6JR3JDlqwrD0isgJdfRW3RVwEkwgAhysT7oW/n1xaHw37S+/ fyHz6BMOevVzAq/VqtC3nWczy9E4lWvM9o1TNVt4MeckQIDKFD8UMGJEq9kUtbcR dVSvxQRLlraLF7l7saadFuyM5j1ZK18ofOaRK3cFRhY5R62+Zv5CPtuduf14OxRG PIgnqoKwLLDAqo5KYNY3MjaOfzBquvlTrc1VcQD6dPD6IhM9KFwsfjx6fUPeXWvl n85Ua4dlSh9YDeWZwatXekN+fV+Kn9R1V0ch7v6dRvCwGRHIluON9ojZ4foZH+y1 Fgm4hqksFTHT12YQHHxWW3casLZJkLRGiGtjQJhSELgxwbVOg88oiQvBhNGYiPpM NtRSE/U0YD72z0J1EmV7w/1eaIJYTvXEAcg0+NR3oIFw1SSoxIk= =KDvo -----END PGP SIGNATURE----- Merge tag 'fallthrough-pseudo-keyword-5.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux Pull 'fallthrough' keyword conversion from Gustavo A. R. Silva: "A tree-wide patch that replaces tons (2484) of /* fall through */ comments, and its variants, with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. There are currently 1167 intances of this fallthrough pseudo-keyword macro in mainline (5.9-rc2), that have been introduced over the last couple of development cycles: $ git grep -nw 'fallthrough;' | wc -l 1167 The global adoption of the fallthrough pseudo-keyword is something certain to happen; so, better sooner than later. :) This will also save everybody's time and thousands of lines of unnecessarily repetitive changelog text. After applying this patch on top of 5.9-rc2, we'll have a total of 3651 instances of this macro: $ git grep -nw 'fallthrough;' | wc -l 3651 This treewide patch doesn't address ALL fall-through markings in all subsystems at once because I have previously sent out patches for some of such subsystems separately, and I will follow up on them; however, this definitely contributes most of the work needed to replace all the fall-through markings with the fallthrough pseudo-keyword macro in the whole codebase. I have build-tested this patch on 10 different architectures: x86_64, i386, arm64, powerpc, s390, sparc64, sh, m68k, powerpc64 and alpha (allyesconfig for all of them). This is in linux-next already and kernel test robot has also helped me to successfully build-test early versions of this patch[2][3][4][5]" [1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through [2] https://lore.kernel.org/lkml/5f3cc99a.HgvOW3rH0mD0RmkM%25lkp@intel.com/ [3] https://lore.kernel.org/lkml/5f3dd1d2.l1axczH+t4hMBZ63%25lkp@intel.com/ [4] https://lore.kernel.org/lkml/5f3e977a.mwYHUIObbR4SHr0B%25lkp@intel.com/ [5] https://lore.kernel.org/lkml/5f3f9e1c.qsyb%2FaySkiXNpkO4%25lkp@intel.com/ * tag 'fallthrough-pseudo-keyword-5.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux: treewide: Use fallthrough pseudo-keyword |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.