kernel/arch/arm/include/asm/vdso/vsyscall.h, branch linux-6.2.y

lib/vdso: Avoid highres update if clocksource is not VDSO capable

2020-02-17T19:12:17Z

If the current clocksource is not VDSO capable there is no point in updating the high resolution parts of the VDSO data. Replace the architecture specific check with a check for a VDSO capable clocksource and skip the update if there is none. Signed-off-by: Thomas Gleixner Tested-by: Vincenzo Frascino Reviewed-by: Vincenzo Frascino Link: https://lkml.kernel.org/r/20200207124403.563379423@linutronix.de

ARM/arm64: vdso: Use common vdso clock mode storage

2020-02-17T19:12:16Z

Convert ARM/ARM64 to the generic VDSO clock mode storage. This needs to happen in one go as they share the clocksource driver. Signed-off-by: Thomas Gleixner Tested-by: Vincenzo Frascino Reviewed-by: Vincenzo Frascino Link: https://lkml.kernel.org/r/20200207124403.363235229@linutronix.de

ARM: vdso: Remove unused function

2020-02-17T13:40:20Z

The function is nowhere used. Aside of that this check should only cover the high resolution parts of the VDSO which require a VDSO capable clocksource and not the complete functionality as the name suggests. Will be replaced with something more useful. Signed-off-by: Thomas Gleixner Tested-by: Vincenzo Frascino Reviewed-by: Vincenzo Frascino Link: https://lkml.kernel.org/r/20200207124402.438179009@linutronix.de

lib/vdso: Make __arch_update_vdso_data() logic understandable

2020-01-17T14:53:50Z

The function name suggests that this is a boolean checking whether the architecture asks for an update of the VDSO data, but it works the other way round. To spare further confusion invert the logic. Fixes: 44f57d788e7d ("timekeeping: Provide a generic update_vsyscall() implementation") Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/r/20200114185946.656652824@linutronix.de

ARM: 8930/1: Add support for generic vDSO

2019-11-15T22:21:12Z

The arm vDSO library requires some adaptations to take advantage of the newly introduced generic vDSO library. Introduce the following changes: - Modification vdso.c to be compliant with the common vdso datapage - Use of lib/vdso for gettimeofday - Implementation of elf note Signed-off-by: Vincenzo Frascino Signed-off-by: Russell King