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[arm64] add hw thread self #8942

Merged
merged 4 commits into from
May 28, 2024
Merged

[arm64] add hw thread self #8942

merged 4 commits into from
May 28, 2024

Commits on May 27, 2024

  1. [libcpu] arm64: Add hardware thread_self support 

    This patch introduces hardware-based thread self-identification
for the AArch64 architecture. It optimizes thread management by
using hardware registers to store and access the current thread's
pointer, reducing overhead and improving overall performance.

Changes include:
- Added `ARCH_USING_HW_THREAD_SELF` configuration option.
- Modified `rtdef.h`, `rtsched.h` to conditionally include
  `critical_switch_flag` based on the new config.
- Updated context management in `context_gcc.S`, `cpuport.h`
  to support hardware-based thread self.
- Enhanced `scheduler_mp.c` and `thread.c` to leverage the new
  hardware thread self feature.

These modifications ensure better scheduling and thread handling,
particularly in multi-core environments, by minimizing the
software overhead associated with thread management.

Signed-off-by: Shell <smokewood@qq.com>
    @polarvid
    polarvid committed May 27, 2024
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  2. fixup: address suggestion

    @polarvid
    polarvid committed May 27, 2024
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  3. fixup: rt_current_thread as global

    @polarvid
    polarvid committed May 27, 2024
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  4. scheduler: add cpu object for UP scheduler 

    Also, maintain the rt_current_thread in cpu object on UP scheduler.
    @polarvid
    polarvid committed May 27, 2024
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