[PATCH v6 0/4] powerpc: switch VDSO to C implementation

[Christophe Leroy]

This is a sixth version of a series to switch powerpc VDSO to generic
C implementation. There is no major change since v5, mainly rebasing.
Generic changes are all in linus/master now, so the series only
includes powerpc parts now.

Patch 3 is new, required following rework of header files for VDSO.

This series applies on today's powerpc/merge branch.

See the last patch for details on changes and performance.

Christophe Leroy (4):
  powerpc/vdso64: Switch from __get_datapage() to get_datapage inline
    macro
  powerpc/vdso: Remove __kernel_datapage_offset and simplify
    __get_datapage()
  powerpc/processor: Move cpu_relax() into asm/vdso/processor.h
  powerpc/vdso: Switch VDSO to generic C implementation.

 arch/powerpc/Kconfig                         |   2 +
 arch/powerpc/include/asm/clocksource.h       |   7 +
 arch/powerpc/include/asm/processor.h         |  10 +-
 arch/powerpc/include/asm/vdso/clocksource.h  |   7 +
 arch/powerpc/include/asm/vdso/gettimeofday.h | 175 +++++++++++
 arch/powerpc/include/asm/vdso/processor.h    |  23 ++
 arch/powerpc/include/asm/vdso/vsyscall.h     |  25 ++
 arch/powerpc/include/asm/vdso_datapage.h     |  51 ++--
 arch/powerpc/kernel/asm-offsets.c            |  49 +---
 arch/powerpc/kernel/time.c                   |  91 +-----
 arch/powerpc/kernel/vdso.c                   |  58 +---
 arch/powerpc/kernel/vdso32/Makefile          |  32 +-
 arch/powerpc/kernel/vdso32/cacheflush.S      |   2 +-
 arch/powerpc/kernel/vdso32/config-fake32.h   |  34 +++
 arch/powerpc/kernel/vdso32/datapage.S        |   7 +-
 arch/powerpc/kernel/vdso32/gettimeofday.S    | 291 +------------------
 arch/powerpc/kernel/vdso32/vdso32.lds.S      |   7 +-
 arch/powerpc/kernel/vdso32/vgettimeofday.c   |  29 ++
 arch/powerpc/kernel/vdso64/Makefile          |  23 +-
 arch/powerpc/kernel/vdso64/cacheflush.S      |   9 +-
 arch/powerpc/kernel/vdso64/datapage.S        |  31 +-
 arch/powerpc/kernel/vdso64/gettimeofday.S    | 243 +---------------
 arch/powerpc/kernel/vdso64/vdso64.lds.S      |   7 +-
 arch/powerpc/kernel/vdso64/vgettimeofday.c   |  29 ++
 24 files changed, 443 insertions(+), 799 deletions(-)
 create mode 100644 arch/powerpc/include/asm/clocksource.h
 create mode 100644 arch/powerpc/include/asm/vdso/clocksource.h
 create mode 100644 arch/powerpc/include/asm/vdso/gettimeofday.h
 create mode 100644 arch/powerpc/include/asm/vdso/processor.h
 create mode 100644 arch/powerpc/include/asm/vdso/vsyscall.h
 create mode 100644 arch/powerpc/kernel/vdso32/config-fake32.h
 create mode 100644 arch/powerpc/kernel/vdso32/vgettimeofday.c
 create mode 100644 arch/powerpc/kernel/vdso64/vgettimeofday.c

-- 
2.25.0