[RFC,0/4] Introduce & Optimize compat-mode helpers

Message

Leonardo Bras Dec. 22, 2023, 7:46 a.m. UTC

I just saw the opportunity of optimizing the helper is_compat_task() by
introducing a compile-time test, and it made possible to remove some
#ifdef's without any loss of performance.

I also saw the possibility of removing the direct check of task flags from
general code, and concentrated it in asm/compat.h by creating a few more
helpers, which in the end helped optimize code.

Leonardo Bras (4):
  riscv: Replace direct thread flag check with is_compat_task()
  riscv: add compile-time test into is_compat_task()
  riscv: Introduce is_compat_thread() into compat.h
  riscv: Introduce set_compat_task() in asm/compat.h

 arch/riscv/include/asm/compat.h    | 19 +++++++++++++++++++
 arch/riscv/include/asm/elf.h       | 11 ++---------
 arch/riscv/include/asm/pgtable.h   |  8 +-------
 arch/riscv/include/asm/processor.h |  4 ++--
 arch/riscv/kernel/ptrace.c         |  6 +++---
 5 files changed, 27 insertions(+), 21 deletions(-)


base-commit: 24e0d2e527a39f64caeb2e6be39ad5396fb2da5e