rt-thread-official/libcpu/aarch64
Shell f17f994f8c
[arm64] add hw thread self (#8942)
* [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>

* fixup: address suggestion

* fixup: rt_current_thread as global

* scheduler: add cpu object for UP scheduler

Also, maintain the rt_current_thread in cpu object on UP scheduler.

---------

Signed-off-by: Shell <smokewood@qq.com>
2024-05-28 14:27:55 +08:00
..
common [arm64] add hw thread self (#8942) 2024-05-28 14:27:55 +08:00
cortex-a [arm64] add hw thread self (#8942) 2024-05-28 14:27:55 +08:00
.gitignore AArch64: support public linker scripts (#7831) 2023-07-25 21:31:44 +08:00
SConscript [smart] fixup of lwp recycling and mm varea (#8206) 2023-11-02 20:23:11 +08:00
link.lds.S AArch64: support public linker scripts (#7831) 2023-07-25 21:31:44 +08:00