Re: [RFC PATCH] asm-generic: Unify uapi bitsperlong.h
From: Xi Ruoyao <xry111@xry111.site>
Date: 2023-06-09 13:05:22
Also in:
bpf, linux-alpha, linux-arch, linux-kselftest, linux-mips, linux-perf-users, linux-riscv, linux-s390, linuxppc-dev, lkml, llvm, loongarch, sparclinux
On Fri, 2023-06-09 at 14:50 +0800, Tiezhu Yang wrote: /* snip */
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In musl, the documentation states that at least gcc-3.4 or clang-3.2 are required, which probably predate the __SIZEOF_LONG__ macro.
Indeed, I've digged some history and __SIZEOF_LONG__ was added into GCC- 4.3 (in 2008). And I didn't realize the bitsperlong.h in tools directory is a copy from uapi.
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On the other hand, musl was only released in 2011, and building musl itself explicitly does not require kernel uapi headers, so this may not be too critical.
Only arm64, riscv and loongarch belong to the newer architectures which are related with this change, I am not sure it is necessary to "unify" uapi bitsperlong.h for them.
At least it will stop the engineers working on "the next architecture" from adding an unneeded bitsperlong.h :). -- Xi Ruoyao [off-list ref] School of Aerospace Science and Technology, Xidian University _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel