rt-thread.git/src/cpu_up.c, branch v5.2.1-betaUnnamed repository; edit this file 'description' to name the repository.http://cgit.235523.xyz/rt-thread.git/atom/src/cpu_up.c?h=v5.2.1-beta2024-05-28T06:27:55Z[arm64] add hw thread self (#8942)2024-05-28T06:27:55ZShellsmokewood@qq.com2024-05-28T06:27:55Zurn:sha1:f17f994f8c85a0ca58d42c81a14f1134af6ada91
* [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.
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Signed-off-by: Shell <smokewood@qq.com>fixup: debug2024-04-20T01:30:12ZShellsmokewood@qq.com2024-04-19T03:27:30Zurn:sha1:8c4db32d041153abab4484ac4118b147cf40fe32add cpu up2024-04-20T01:30:12ZShellsmokewood@qq.com2024-04-19T02:45:09Zurn:sha1:451ac0396512d9fbf2ccad48e08774b8da3cb5ac