The vDSO header files are a bit of a mess, relying on transitive
includes and pulling in much more definitions than necessary.

Clean up the headers and remove some ifdeffery in the rng core.

This was originally part of my SPARC generic vDSO patch series [0].
After feedback I am reworking that series and it may not require these
cleanups anymore. But as the code is already written I am submitting it
here standalone.

Based on tip/timers/vdso.

[0] https://lore.kernel.org/lkml/20251106-vdso-sparc64-generic-2-v5-0-97ff2b6542f7@linutronix.de/

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
---
Thomas Weißschuh (15):
      arm64: vDSO: gettimeofday: Explicitly include vdso/clocksource.h
      arm64: vDSO: compat_gettimeofday: Add explicit includes
      ARM: vdso: gettimeofday: Add explicit includes
      powerpc/vdso/gettimeofday: Explicitly include vdso/time32.h
      powerpc/vdso: Explicitly include asm/cputable.h and asm/feature-fixups.h
      LoongArch: vDSO: Explicitly include asm/vdso/vdso.h
      MIPS: vdso: Add include guard to asm/vdso/vdso.h
      MIPS: vdso: Explicitly include asm/vdso/vdso.h
      random: vDSO: Add explicit includes
      vdso/gettimeofday: Add explicit includes
      vdso/helpers: Explicitly include vdso/processor.h
      vdso/datapage: Remove inclusion of gettimeofday.h
      vdso/datapage: Trim down unnecessary includes
      random: vDSO: trim vDSO includes
      random: vDSO: remove ifdeffery

 arch/arm/include/asm/vdso/gettimeofday.h          |  2 ++
 arch/arm64/include/asm/vdso/compat_gettimeofday.h |  3 +++
 arch/arm64/include/asm/vdso/gettimeofday.h        |  2 ++
 arch/loongarch/kernel/process.c                   |  1 +
 arch/loongarch/kernel/vdso.c                      |  1 +
 arch/mips/include/asm/vdso/vdso.h                 |  5 +++++
 arch/mips/kernel/vdso.c                           |  1 +
 arch/powerpc/include/asm/vdso/gettimeofday.h      |  1 +
 arch/powerpc/include/asm/vdso/processor.h         |  3 +++
 drivers/char/random.c                             | 16 ++++++----------
 include/vdso/datapage.h                           | 23 ++---------------------
 include/vdso/helpers.h                            |  1 +
 lib/vdso/getrandom.c                              |  3 +++
 lib/vdso/gettimeofday.c                           | 17 +++++++++++++++++
 14 files changed, 48 insertions(+), 31 deletions(-)
---
base-commit: dcf5b55ca66160879205b1ee7b9b711751070edd
change-id: 20260114-vdso-header-cleanups-d2fa26758eed

Best regards,
-- 
Thomas Weißschuh <thomas.weissschuh@linutronix.de>