lib/vdso: Provide generic VDSO implementation
authorVincenzo Frascino <vincenzo.frascino@arm.com>
Fri, 21 Jun 2019 09:52:29 +0000 (10:52 +0100)
committerThomas Gleixner <tglx@linutronix.de>
Sat, 22 Jun 2019 19:21:05 +0000 (21:21 +0200)
commit00b26474c2f1613d7ab894c525f775c67c8a9e8f
treeec821728fc16277806e520618650cbbdb5159575
parent361f8aee9b093526297d567a9dc2f6cbf746e5f9
lib/vdso: Provide generic VDSO implementation

In the last few years the kernel gained quite some architecture specific
vdso implementations which contain very similar code.

Introduce a generic VDSO implementation of gettimeofday() which will be
shareable between architectures once they are converted over.

The implementation is based on the current x86 VDSO code.

[ tglx: Massaged changelog and made the kernel doc tabular ]

Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Shijith Thotton <sthotton@marvell.com>
Tested-by: Andre Przywara <andre.przywara@arm.com>
Cc: linux-arch@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-mips@vger.kernel.org
Cc: linux-kselftest@vger.kernel.org
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Burton <paul.burton@mips.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Mark Salyzyn <salyzyn@android.com>
Cc: Peter Collingbourne <pcc@google.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Dmitry Safonov <0x7f454c46@gmail.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Huw Davies <huw@codeweavers.com>
Link: https://lkml.kernel.org/r/20190621095252.32307-3-vincenzo.frascino@arm.com
include/vdso/helpers.h [new file with mode: 0644]
lib/Kconfig
lib/vdso/Kconfig [new file with mode: 0644]
lib/vdso/Makefile [new file with mode: 0644]
lib/vdso/gettimeofday.c [new file with mode: 0644]