49208b67 - kbuild: fix rebuild of generic syscall headers

Wed, 17 Jul 2024 16:24:20 +0000

kbuild: fix rebuild of generic syscall headersCommit fbb5c0606fa4 ("kbuild: add syscall table generation toscripts/Makefile.asm-headers") started to generate syscall headersfor architectures using generic syscalls.However, these headers are always rebuilt using GNU Make 4.4.1 or newer.When using GNU Make 4.4 or older, these headers are not rebuilt when thecommand to generate them is changed, despite the use of the if_changedmacro.scripts/Makefile.asm-headers now uses FORCE, but it is not marked as.PHONY. To handle the command line change correctly, .*.cmd files mustbe included.Fixes: fbb5c0606fa4 ("kbuild: add syscall table generation to scripts/Makefile.asm-headers")Reported-by: Linus Torvalds Closes: https://lore.kernel.org/lkml/CAHk-=wibB7SvXnUftBgAt+4-3vEKRpvEgBeDEH=i=j2GvDitoA@mail.gmail.com/Signed-off-by: Masahiro Yamada Tested-by: Arnd Bergmann Signed-off-by: Linus Torvalds List of files: /linux-6.15/scripts/Makefile.asm-headers

fbb5c060 - kbuild: add syscall table generation to scripts/Makefile.asm-headers

Fri, 26 Apr 2024 13:19:48 +0000

kbuild: add syscall table generation to scripts/Makefile.asm-headersThere are 11 copies of arch/*/kernel/syscalls/Makefile that all implementthe same basic logic in a somewhat awkward way.I tried out various ways of unifying the existing copies and ended upwith something that hooks into the logic for generating the redirectionsto asm-generic headers. This gives a nicer syntax of being able to listthe generated files in $(syscall-y) inside of arch/*/include/asm/Kbuildinstead of both $(generated-y) in that place and also in anotherMakefile.The configuration for which syscall.tbl file to use and which ABIs toenable is now done in arch/*/kernel/Makefile.syscalls. I have donepatches for all architectures and made sure that the new genericrules implement a superset of all the architecture specific cornercases.ince the header file is not specific to asm-generic/*.h redirectsnow, I ended up renaming the file to scripts/Makefile.asm-headers.Signed-off-by: Arnd Bergmann List of files: /linux-6.15/scripts/Makefile.asm-headers

Changes in Makefile.asm-headers

49208b67 - kbuild: fix rebuild of generic syscall headers

fbb5c060 - kbuild: add syscall table generation to scripts/Makefile.asm-headers