This is the tenth version of a series to switch powerpc VDSO to generic C implementation. Changes in v11: - Rebased to today's powerpc/merge branch - Prototype of __arch_get_hw_counter() was modified in mainline (patch 2) Changes in v10 are: - Added a comment explaining the reason for the double stack frame - Moved back .cfi_register lr next to mflr Main changes in v9 are: - Dropped the patches which put the VDSO datapage in front of VDSO text in the mapping - Adds a second stack frame because the caller doesn't set one, at least on PPC64 - Saving the TOC pointer on PPC64 (is that really needed ?) This series applies on today's powerpc/merge branch. See the last patches for details on changes and performance. Christophe Leroy (5): powerpc/processor: Move cpu_relax() into asm/vdso/processor.h powerpc/vdso: Prepare for switching VDSO to generic C implementation. powerpc/vdso: Save and restore TOC pointer on PPC64 powerpc/vdso: Switch VDSO to generic C implementation. powerpc/vdso: Provide __kernel_clock_gettime64() on vdso32 arch/powerpc/Kconfig | 2 + arch/powerpc/include/asm/clocksource.h | 7 + arch/powerpc/include/asm/processor.h | 13 +- arch/powerpc/include/asm/vdso/clocksource.h | 7 + arch/powerpc/include/asm/vdso/gettimeofday.h | 198 ++++++++++++ arch/powerpc/include/asm/vdso/processor.h | 23 ++ arch/powerpc/include/asm/vdso/vsyscall.h | 25 ++ arch/powerpc/include/asm/vdso_datapage.h | 40 +-- arch/powerpc/kernel/asm-offsets.c | 49 +-- arch/powerpc/kernel/time.c | 91 +----- arch/powerpc/kernel/vdso.c | 5 +- arch/powerpc/kernel/vdso32/Makefile | 32 +- arch/powerpc/kernel/vdso32/config-fake32.h | 34 +++ arch/powerpc/kernel/vdso32/gettimeofday.S | 300 +------------------ arch/powerpc/kernel/vdso32/vdso32.lds.S | 1 + arch/powerpc/kernel/vdso32/vgettimeofday.c | 35 +++ arch/powerpc/kernel/vdso64/Makefile | 23 +- arch/powerpc/kernel/vdso64/gettimeofday.S | 242 +-------------- arch/powerpc/kernel/vdso64/vgettimeofday.c | 29 ++ 19 files changed, 454 insertions(+), 702 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
