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Subject[PATCH v9 0/8] Disable compat cruft on ppc64le v9
Date
Less code means less bugs so add a knob to skip the compat stuff.

This is tested on ppc64le top of

https://patchwork.ozlabs.org/patch/1153850/
https://patchwork.ozlabs.org/patch/1158412/

Changes in v2: saner CONFIG_COMPAT ifdefs
Changes in v3:
- change llseek to 32bit instead of builing it unconditionally in fs
- clanup the makefile conditionals
- remove some ifdefs or convert to IS_DEFINED where possible
Changes in v4:
- cleanup is_32bit_task and current_is_64bit
- more makefile cleanup
Changes in v5:
- more current_is_64bit cleanup
- split off callchain.c 32bit and 64bit parts
Changes in v6:
- cleanup makefile after split
- consolidate read_user_stack_32
- fix some checkpatch warnings
Changes in v7:
- add back __ARCH_WANT_SYS_LLSEEK to fix build with llseek
- remove leftover hunk
- add review tags
Changes in v8:
- consolidate valid_user_sp to fix it in the split callchain.c
- fix build errors/warnings with PPC64 !COMPAT and PPC32
Changes in v9:
- remove current_is_64bit()

Michal Suchanek (8):
powerpc: Add back __ARCH_WANT_SYS_LLSEEK macro
powerpc: move common register copy functions from signal_32.c to
signal.c
powerpc/perf: consolidate read_user_stack_32
powerpc/perf: consolidate valid_user_sp
powerpc/perf: remove current_is_64bit()
powerpc/64: make buildable without CONFIG_COMPAT
powerpc/64: Make COMPAT user-selectable disabled on littleendian by
default.
powerpc/perf: split callchain.c by bitness

arch/powerpc/Kconfig | 5 +-
arch/powerpc/include/asm/thread_info.h | 4 +-
arch/powerpc/include/asm/unistd.h | 1 +
arch/powerpc/kernel/Makefile | 7 +-
arch/powerpc/kernel/entry_64.S | 2 +
arch/powerpc/kernel/signal.c | 144 ++++++++-
arch/powerpc/kernel/signal_32.c | 140 ---------
arch/powerpc/kernel/syscall_64.c | 6 +-
arch/powerpc/kernel/vdso.c | 3 +-
arch/powerpc/perf/Makefile | 5 +-
arch/powerpc/perf/callchain.c | 387 +------------------------
arch/powerpc/perf/callchain.h | 25 ++
arch/powerpc/perf/callchain_32.c | 197 +++++++++++++
arch/powerpc/perf/callchain_64.c | 178 ++++++++++++
fs/read_write.c | 3 +-
15 files changed, 565 insertions(+), 542 deletions(-)
create mode 100644 arch/powerpc/perf/callchain.h
create mode 100644 arch/powerpc/perf/callchain_32.c
create mode 100644 arch/powerpc/perf/callchain_64.c

--
2.23.0

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