{Bp-13418} sched: add nxsched_remove_self

[jerpelea]

Summary

reason:
1In the scenario of active waiting, context switching is inevitable, and we can eliminate redundant judgments.

code size
before
hujun5@hujun5-OptiPlex-7070:~/downloads1/vela_sim/nuttx$ size nuttx
text data bss dec hex filename
262848 49985 63893 376726 5bf96 nuttx

after
hujun5@hujun5-OptiPlex-7070:~/downloads1/vela_sim/nuttx$ size nuttx
text data bss dec hex filename
263324 49985 63893 377202 5c172 nuttx

reduce code size by -476

Configuring NuttX and compile:
$ ./tools/configure.sh -l qemu-armv8a:nsh_smp
$ make
Running with qemu
$ qemu-system-aarch64 -cpu cortex-a53 -smp 4 -nographic
-machine virt,virtualization=on,gic-version=3
-net none -chardev stdio,id=con,mux=on -serial chardev:con
-mon chardev=con,mode=readline -kernel ./nuttx

Impact

RELEASE

Testing

CI

[nuttxpr]

[Experimental Bot, please feedback here]

NuttX PR Requirements Review

This PR does not meet the NuttX requirements.

Here's why:

• Insufficient Summary: The summary lacks crucial information:
  • Unclear necessity: "eliminate redundant judgments" is vague. Explain what judgments are redundant and why.
  • Missing context: What is "active waiting" referring to? Which code section implements this?
  • No issue references: Are there related NuttX issues?
• Incomplete Impact:
  • RELEASE Impact: This is not informative. State if this is a bug fix, enhancement, etc.
  • User impact: Will this change behavior for existing users?
  • Hardware/Architecture impact: Any specific architectures affected?
  • Security impact: Even if unlikely, address potential security implications.
• Inadequate Testing:
  • CI is not enough: Local testing is mandatory. Specify build hosts and target details.
  • Missing logs: Provide relevant log snippets showing the issue before and the improvement after your change.

To improve this PR:

1. Expand the Summary: Clearly articulate the problem, solution, and relevant context.
2. Thoroughly address Impact: Analyze and document all potential impacts of the change.
3. Provide Detailed Testing Information: List your local setup, include relevant log snippets, and ensure CI passes.

[jerpelea]

apache/nuttx-apps#2661 needed

[lupyuen]

@jerpelea and @xiaoxiang781216: I think we need #13806 to check out the right version of nuttx-apps. The log shows that we're building with the master branch of nuttx-apps:

Fetching the repository
  /usr/bin/git -c protocol.version=2 fetch --no-tags --prune --no-recurse-submodules --depth=1 origin +refs/heads/master:refs/remotes/origin/master
  From https://github.com/apache/nuttx-apps
   * [new branch]      master     -> origin/master
Checking out the ref
  /usr/bin/git checkout --progress --force -B master refs/remotes/origin/master
  Reset branch 'master'
  branch 'master' set up to track 'origin/master'.

https://github.com/apache/nuttx/actions/runs/11252972889/job/31287274002

[jerpelea]

@lupyuen on it