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Subject[PATCH v4 0/8] powerpc/vdso32 enhancement and optimisation
Date
This series:
- adds getcpu() on non SMP ppc32
- adds coarse clocks in clock_gettime
- fixes and adds all clocks in clock_getres
- optimises the retrieval of the datapage address
- optimises the cache functions

v4:
- Rebased on top of ceb307474506 ("Merge tag 'y2038-cleanups-5.5' of git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playground")
- Fixed build failure with old binutils reported by mpe (patch 4)

v3:
- Dropped the 'fast syscall' hack for getcpu() on SMP.
- Moved get_datapage macro into asm/vdso_datapage.h so that it can be used on PPC64 as well.

v2:
- Used named labels in patch 2
- Added patch from Vincenzo to fix clock_getres() (patch 3)
- Removed unnecessary label in patch 4 as suggested by Segher
- Added patches 5 to 8

Christophe Leroy (8):
powerpc/32: Add VDSO version of getcpu on non SMP
powerpc/vdso32: Add support for CLOCK_{REALTIME/MONOTONIC}_COARSE
powerpc: Fix vDSO clock_getres()
powerpc/vdso32: inline __get_datapage()
powerpc/vdso32: Don't read cache line size from the datapage on PPC32.
powerpc/vdso32: use LOAD_REG_IMMEDIATE()
powerpc/vdso32: implement clock_getres entirely
powerpc/vdso32: miscellaneous optimisations

arch/powerpc/include/asm/vdso_datapage.h | 16 +++-
arch/powerpc/kernel/asm-offsets.c | 7 +-
arch/powerpc/kernel/time.c | 1 +
arch/powerpc/kernel/vdso.c | 5 --
arch/powerpc/kernel/vdso32/Makefile | 4 +-
arch/powerpc/kernel/vdso32/cacheflush.S | 32 ++++++--
arch/powerpc/kernel/vdso32/datapage.S | 31 +-------
arch/powerpc/kernel/vdso32/getcpu.S | 23 +++++-
arch/powerpc/kernel/vdso32/gettimeofday.S | 124 +++++++++++++++++++++---------
arch/powerpc/kernel/vdso32/vdso32.lds.S | 2 +-
arch/powerpc/kernel/vdso64/gettimeofday.S | 7 +-
11 files changed, 164 insertions(+), 88 deletions(-)

--
2.13.3

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