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Christophe Leroy da74f65920 powerpc/32: add memset16() Commit `694fc88ce2` ("powerpc/string: Implement optimized memset variants") added memset16(), memset32() and memset64() for the 64 bits PPC. On 32 bits, memset64() is not relevant, and as shown below, the generic version of memset32() gives a good code, so only memset16() is candidate for an optimised version. 000009c0 <memset32>: 9c0: 2c 05 00 00 cmpwi r5,0 9c4: 39 23 ff fc addi r9,r3,-4 9c8: 4d 82 00 20 beqlr 9cc: 7c a9 03 a6 mtctr r5 9d0: 94 89 00 04 stwu r4,4(r9) 9d4: 42 00 ff fc bdnz 9d0 <memset32+0x10> 9d8: 4e 80 00 20 blr The last part of memset() handling the not 4-bytes multiples operates on bytes, making it unsuitable for handling word without modification. As it would increase memset() complexity, it is better to implement memset16() from scratch. In addition it has the advantage of allowing a more optimised memset16() than what we would have by using the memset() function. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>		2017-09-01 16:42:45 +10:00
arch	powerpc/32: add memset16()	2017-09-01 16:42:45 +10:00
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Documentation	powerpc/powernv/vas: Define vas_init() and vas_exit()	2017-08-31 14:26:26 +10:00
drivers	cxl: Fix driver use count	2017-08-31 14:26:49 +10:00
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fs	NFS client bugfixes for 4.13	2017-07-21 16:26:01 -07:00
include	mm/hugetlb: Allow arch to override and call the weak function	2017-08-15 23:20:30 +10:00
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kernel	Three minor updates	2017-07-21 13:59:51 -07:00
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mm	mm/hugetlb: Allow arch to override and call the weak function	2017-08-15 23:20:30 +10:00
net	NFS client bugfixes for 4.13	2017-07-21 16:26:01 -07:00
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scripts	Properly alphabetize MAINTAINERS file	2017-07-23 16:06:21 -07:00
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tools	selftests/powerpc: Force ptrace tests to build -fno-pie	2017-08-31 14:26:49 +10:00
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MAINTAINERS	MAINTAINERS: Add drivers/watchdog/wdrtas.c to powerpc section	2017-08-31 14:26:46 +10:00
Makefile	Linux 4.13-rc2	2017-07-23 16:15:17 -07:00
README

README

Linux kernel
============

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

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.