On Sun, Feb 11, 2018 at 12:27:14PM -0800, Randy Dunlap wrote: > On 02/11/18 12:22, Philippe Ombredanne wrote: > > nit... For a comment in .h this line should be instead its own comment > > as the first line: > >> +/* SPDX-License-Identifier: GPL-2.0 */ > > Why are we treating header files (.h) differently than .c files? > Either one can use the C++ "//" comment syntax.
This is now documented! Documentation/process/license-rules.rst: If a specific tool cannot handle the standard comment style, then the appropriate comment mechanism which the tool accepts shall be used. This is the reason for having the "/\* \*/" style comment in C header files. There was build breakage observed with generated .lds files where 'ld' failed to parse the C++ comment. This has been fixed by now, but there are still older assembler tools which cannot handle C++ style comments. Personally, I find this disappointing. I find this: // SPDX-License-Identifier: GPL-2.0+ /* * XArray implementation * Copyright (c) 2017 Microsoft Corporation * Author: Matthew Wilcox <mawil...@microsoft.com> */ much less visually appealling than /* * XArray implementation * Copyright (c) 2017 Microsoft Corporation * Author: Matthew Wilcox <mawil...@microsoft.com> * SPDX-License-Identifier: GPL-2.0+ */ I can't see this variation making a tag extraction tool harder to write.