Re: [PATCH V10 11/22] LoongArch: Add process management

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On 5/14/22 16:03, Huacai Chen wrote:
Add process management support for LoongArch, including: thread info
definition, context switch and process tracing.

Signed-off-by: Huacai Chen <chenhuacai@xxxxxxxxxxx>
---
  arch/loongarch/include/asm/fpu.h         | 129 +++++++
  arch/loongarch/include/asm/idle.h        |   9 +
  arch/loongarch/include/asm/mmu.h         |  16 +
  arch/loongarch/include/asm/mmu_context.h | 152 ++++++++
  arch/loongarch/include/asm/processor.h   | 209 +++++++++++
  arch/loongarch/include/asm/ptrace.h      | 152 ++++++++
  arch/loongarch/include/asm/switch_to.h   |  37 ++
  arch/loongarch/include/asm/thread_info.h | 106 ++++++
  arch/loongarch/include/uapi/asm/ptrace.h |  52 +++
  arch/loongarch/kernel/fpu.S              | 264 ++++++++++++++
  arch/loongarch/kernel/idle.c             |  16 +
  arch/loongarch/kernel/process.c          | 260 ++++++++++++++
  arch/loongarch/kernel/ptrace.c           | 431 +++++++++++++++++++++++
  arch/loongarch/kernel/switch.S           |  35 ++
  14 files changed, 1868 insertions(+)
  create mode 100644 arch/loongarch/include/asm/fpu.h
  create mode 100644 arch/loongarch/include/asm/idle.h
  create mode 100644 arch/loongarch/include/asm/mmu.h
  create mode 100644 arch/loongarch/include/asm/mmu_context.h
  create mode 100644 arch/loongarch/include/asm/processor.h
  create mode 100644 arch/loongarch/include/asm/ptrace.h
  create mode 100644 arch/loongarch/include/asm/switch_to.h
  create mode 100644 arch/loongarch/include/asm/thread_info.h
  create mode 100644 arch/loongarch/include/uapi/asm/ptrace.h
  create mode 100644 arch/loongarch/kernel/fpu.S
  create mode 100644 arch/loongarch/kernel/idle.c
  create mode 100644 arch/loongarch/kernel/process.c
  create mode 100644 arch/loongarch/kernel/ptrace.c
  create mode 100644 arch/loongarch/kernel/switch.S

The context handling code already saw use in released version of strace [1] [2], so it appears appropriate to consider the user-space additions to be in a reasonably good shape already.

Reviewed-by: WANG Xuerui <git@xxxxxxxxxx>

[1]: https://github.com/strace/strace/pull/205
[2]: https://github.com/strace/strace/pull/207




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