kernel/linux.git/arch/mips/include/asm/string.h, branch v6.12.80

MIPS: Drop 32-bit asm string functions

2019-10-09T19:48:05+00:00

We have assembly implementations of strcpy(), strncpy(), strcmp() & strncmp() which: - Are simple byte-at-a-time loops with no particular optimizations. As a comment in the code describes, they're "rather naive". - Offer no clear performance advantage over the generic C implementations - in microbenchmarks performed by Alexander Lobakin the asm functions sometimes win & sometimes lose, but generally not by large margins in either direction. - Don't support 64-bit kernels, where we already make use of the generic C implementations. - Tend to bloat kernel code size due to inlining. - Don't support CONFIG_FORTIFY_SOURCE. - Won't support nanoMIPS without rework. For all of these reasons, delete the asm implementations & make use of the generic C implementations for 32-bit kernels just like we already do for 64-bit kernels. Signed-off-by: Paul Burton URL: https://lore.kernel.org/linux-mips/a2a35f1cf58d6db19eb4af9b4ae21e35@dlink.ru/ Cc: Alexander Lobakin Reviewed-by: Philippe Mathieu-Daudé Cc: linux-mips@vger.kernel.org

mips: Kconfig: Add ARCH_HAS_FORTIFY_SOURCE

2019-10-07T16:45:49+00:00

FORTIFY_SOURCE detects various overflows at compile and run time. (6974f0c4555e ("include/linux/string.h: add the option of fortified string.h functions) ARCH_HAS_FORTIFY_SOURCE means that the architecture can be built and run with CONFIG_FORTIFY_SOURCE. Since mips can be built and run with that flag, select ARCH_HAS_FORTIFY_SOURCE as default. Signed-off-by: Dmitry Korotin Signed-off-by: Paul Burton Cc: linux-mips@vger.kernel.org

MIPS: Whitespace cleanup.

2013-02-01T09:00:22+00:00

Having received another series of whitespace patches I decided to do this once and for all rather than dealing with this kind of patches trickling in forever. Signed-off-by: Ralf Baechle

MIPS: Move headfiles to new location below arch/mips/include

2008-10-11T15:18:52+00:00

Signed-off-by: Ralf Baechle