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Having a clocksource_arch_init() callback always sets vdso_clock_mode to VDSO_CLOCKMODE_ARCHTIMER if GENERIC_GETTIMEOFDAY is enabled, this is required for the riscv-timer. This works for platforms where just riscv-timer clocksource is present. On platforms where other clock sources are available we want them to register with vdso_clock_mode set to VDSO_CLOCKMODE_NONE. On the Renesas RZ/Five SoC OSTM block can be used as clocksource [0], to avoid multiple clock sources being registered as VDSO_CLOCKMODE_ARCHTIMER move setting of vdso_clock_mode in the riscv-timer driver instead of doing this in clocksource_arch_init() callback as done similarly for ARM/64 architecture. [0] drivers/clocksource/renesas-ostm.c Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Tested-by: Samuel Holland <samuel@sholland.org> Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Reviewed-by: Samuel Holland <samuel@sholland.org> Link: https://lore.kernel.org/r/20221229224601.103851-1-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
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.