* [#13395](https://github.com/apache/nuttx/pull/13395) Critmon optimize, make possible open cpuload based on critmon and disable critical section & sched_lock to save cost.
* [#12691](https://github.com/apache/nuttx/pull/12691) sched.h: add SCHED_BATCH and SCHED_IDLE definition
* [#12584](https://github.com/apache/nuttx/pull/12584) sched.h: CPU_XXX macros can also be used without CONFIG_SMP
* [#12703](https://github.com/apache/nuttx/pull/12703) sched.h: Update doc link for tcbinfo_s
* [#13274](https://github.com/apache/nuttx/pull/13274) sched: add DEBUGASSERT to assure that affinity not zero
* [#13341](https://github.com/apache/nuttx/pull/13341) sched: adjust the scheduling strategy
* [#13105](https://github.com/apache/nuttx/pull/13105) sched: change pthread_mutex implementation from sem to mutex
* [#12742](https://github.com/apache/nuttx/pull/12742) sched: Improve Kconfig help of INIT_ENTRYPOINT
* [#13525](https://github.com/apache/nuttx/pull/13525) sched: move DUMP_ON_EXIT to sched
* [#13211](https://github.com/apache/nuttx/pull/13211) sched: replace up_cpu_index with this_cpu
* [#13271](https://github.com/apache/nuttx/pull/13271) sched: use this_task replace nxsched_self
* [#13263](https://github.com/apache/nuttx/pull/13263) sched/event: clear pending events before enable the scheduler
* [#13329](https://github.com/apache/nuttx/pull/13329) sched/group/setuptask_file: duplicate idle task fd for kernel thread
* [#13083](https://github.com/apache/nuttx/pull/13083) sched/irq: correct critical section to spin lock 
* [#12802](https://github.com/apache/nuttx/pull/12802) sched/nxevent: add support of kernel event group
* [#13264](https://github.com/apache/nuttx/pull/13264) sched/policy: move g_policy from data to rodata
* [#13017](https://github.com/apache/nuttx/pull/13017) sched/sched: simplify the implementation of the function nxsched_readytorun_setpriority
* [#13134](https://github.com/apache/nuttx/pull/13134) sched/signal: fix pthread_kill use after free
* [#13530](https://github.com/apache/nuttx/pull/13530) sched/signal: Simplified Implementation for SIGEV_THREAD_TID
* [#12283](https://github.com/apache/nuttx/pull/12283) sched/signal: There is no need to use sched_[un]lock 
* [#12553](https://github.com/apache/nuttx/pull/12553) sched/tcb: amend pull/12320