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Author SHA1 Message Date
Adrian Hunter 1beb35ec61 vdso, math64: Provide mul_u64_u32_add_u64_shr() 
Provide mul_u64_u32_add_u64_shr() which is a calculation that will be used
by timekeeping and VDSO.

Place #include <vdso/math64.h> after #include <asm/div64.h> to allow
architecture-specific overrides, at least for the kernel.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240325064023.2997-6-adrian.hunter@intel.com
 2024-04-08 15:03:07 +02:00
Vincenzo Frascino b874b8358c linux/math64.h: Extract common header for vDSO 
The vDSO library should only include the necessary headers required for
a userspace library (UAPI and a minimal set of kernel headers). To make
this possible it is necessary to isolate from the kernel headers the
common parts that are strictly necessary to build the library.

Split math64.h into linux and common headers to make the latter suitable
for inclusion in the vDSO library.

Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20200320145351.32292-10-vincenzo.frascino@arm.com
 2020-03-21 15:23:56 +01:00