* [#17287](https://github.com/apache/nuttx/pull/17287) sched/clock: Fix missing clock_inittime() call
* [#17423](https://github.com/apache/nuttx/pull/17423) docs/sched/sched: Add documentation for different sleep interfaces
* [#17482](https://github.com/apache/nuttx/pull/17482) sched/clock: Remove unnecessary preprocessor definition
* [#17485](https://github.com/apache/nuttx/pull/17485) sched/misc: correct coredump log format
* [#17517](https://github.com/apache/nuttx/pull/17517) sched/sched: Part 1: add high resolution timer (hrtimer) only (without os tick support with hrtimer) for NuttX
* [#17535](https://github.com/apache/nuttx/pull/17535) sched/signal: assert if call timedwait from interrupt
* [#17545](https://github.com/apache/nuttx/pull/17545) sched: merge task_tcb_s and pthread_tcb_s into tcb to simplify the code.
* [#17546](https://github.com/apache/nuttx/pull/17546) sched/env_putenv:putenv is kernel function need use kmm_free
* [#17564](https://github.com/apache/nuttx/pull/17564) Revert "sched/group: move task group into task_tcb_s to improve perfo…
* [#17584](https://github.com/apache/nuttx/pull/17584) sched: Improvements on sched_timerexpiration.
* [#17640](https://github.com/apache/nuttx/pull/17640) sched/wdog: Fix-up for SMP and Improvements.
* [#17642](https://github.com/apache/nuttx/pull/17642) sched/hrtimer: hrtimer state machine improvement for SMP cases
* [#17644](https://github.com/apache/nuttx/pull/17644) sched/signals: add support to partially or fully disable signals 
* [#17680](https://github.com/apache/nuttx/pull/17680) sched: Remove `CONFIG_SCHED_TICKLESS_TICK_ARGUMENT`.
* [#17681](https://github.com/apache/nuttx/pull/17681) sched/wdog: fix race condition in wd_gettime()
* [#17739](https://github.com/apache/nuttx/pull/17739) sched/task: fix Redundant memory allocation.
* [#17781](https://github.com/apache/nuttx/pull/17781) sched/hrtimer: isolate SMP logic in hrtimer
* [#17784](https://github.com/apache/nuttx/pull/17784) sched/hrtimer: Fix some functional correctness issues.
* [#17796](https://github.com/apache/nuttx/pull/17796) sched/wdog: Simplify the wdog expiration handling.
* [#17822](https://github.com/apache/nuttx/pull/17822) sched: binfmt remove csection
* [#17823](https://github.com/apache/nuttx/pull/17823) sched: merge nxsched_timer_expiration() into nxsched_process_timer() to simplify tick process
* [#17848](https://github.com/apache/nuttx/pull/17848) sched/hrtimer: Some improvements.
* [#17912](https://github.com/apache/nuttx/pull/17912) sched/sched: Improve sched make and cmake scripts
* [#17921](https://github.com/apache/nuttx/pull/17921) sched/hrtimer: fix Kconfig typo
* [#17941](https://github.com/apache/nuttx/pull/17941) sched/tls: fix uninitialized argv pointer in task info
* [#17953](https://github.com/apache/nuttx/pull/17953) sched/task: fix task_exit regression with critical section state
* [#17955](https://github.com/apache/nuttx/pull/17955) sched/addrenv: replace critical section with spinlock for refs protec…
* [#17957](https://github.com/apache/nuttx/pull/17957) sched/environ: rm cestion_in evn
* [#17958](https://github.com/apache/nuttx/pull/17958) sched/irq: handle NULL ISR handler in irq_default_handler
* [#17959](https://github.com/apache/nuttx/pull/17959) sched/signal: use spinlock to protect signal queues
* [#17969](https://github.com/apache/nuttx/pull/17969) sched/sched_roundrobin.c: fix round-robin scheduling in SMP mode
* [#17971](https://github.com/apache/nuttx/pull/17971) sched/list: some improvements.
* [#17981](https://github.com/apache/nuttx/pull/17981) sched: stack debugging improvements
* [#17985](https://github.com/apache/nuttx/pull/17985) sched/task: fix null pointer dereference in fork address environment …
* [#17991](https://github.com/apache/nuttx/pull/17991) sched/signals: improvements for when all signals are disabled
* [#17993](https://github.com/apache/nuttx/pull/17993) sched/wdog: Simplify tickless timer expiration.
* [#18002](https://github.com/apache/nuttx/pull/18002) sched/sched: add sched_timer.c to improve tick processing and enable hrtimer support for scheduler
* [#18007](https://github.com/apache/nuttx/pull/18007) sched/group: add spinlock in group_childstatus.c
* [#18012](https://github.com/apache/nuttx/pull/18012) sched: add spinlock to sched_note_preemption and nxsched_critmon_pree…
* [#18016](https://github.com/apache/nuttx/pull/18016) sched/task: MISRA/Coverity cleanups in scheduler, init, libc spawn, and ARMv8-R IRQ helpers
* [#18026](https://github.com/apache/nuttx/pull/18026) sched/hrtimer: add option for list-based hrtimer management
* [#18034](https://github.com/apache/nuttx/pull/18034) sched/environ: add interrupt context check to getenv
* [#18037](https://github.com/apache/nuttx/pull/18037) sched/tls: fix thread ID initialization in tls_dup_info
* [#18038](https://github.com/apache/nuttx/pull/18038) sched/pthread: use spin_lock_irqsave_nopreempt for mutex head lock
* [#18040](https://github.com/apache/nuttx/pull/18040) sched: move process ID from kernel to TLS for faster access
* [#18041](https://github.com/apache/nuttx/pull/18041) sched/pthread: remove duplicate robust mutex checking logic
* [#18047](https://github.com/apache/nuttx/pull/18047) [BUG-FIX] Fix some bug of sched
* [#18066](https://github.com/apache/nuttx/pull/18066) sched/irq: Avoid same static function name in different files
* [#18070](https://github.com/apache/nuttx/pull/18070) sched/signal: fix the occasional issue where SIGCONT was not executed
* [#18072](https://github.com/apache/nuttx/pull/18072) sched/wqueue: add configuring the stack of an hpwork/lpwork as static
* [#18078](https://github.com/apache/nuttx/pull/18078) sched: add configuration to record the busy waiting time
* [#18080](https://github.com/apache/nuttx/pull/18080) sched/sched: Modify the critical section interface name
* [#18083](https://github.com/apache/nuttx/pull/18083) !sched: Fix MISRA-C violations
* [#18084](https://github.com/apache/nuttx/pull/18084) sched/irq: declare the object in scope
* [#18086](https://github.com/apache/nuttx/pull/18086) sched/irq: avoid casting from signed int to unsigned int
* [#18090](https://github.com/apache/nuttx/pull/18090) sched/irq: Every function must have exactly one exit point
* [#18093](https://github.com/apache/nuttx/pull/18093) sched/irq: fix MISRA C problems for irq_chain.c
* [#18098](https://github.com/apache/nuttx/pull/18098) sched/pthread: move pthread mutex from syscall to user-space
* [#18105](https://github.com/apache/nuttx/pull/18105) sched/irq: Change the function parameter "regs" to "context"
* [#18111](https://github.com/apache/nuttx/pull/18111) sched/irq: Avoid directly converting variables of type uintptr_t to void
* [#18114](https://github.com/apache/nuttx/pull/18114) sched: add trace points during system startup and board initialization
* [#18118](https://github.com/apache/nuttx/pull/18118) sched: fix regression and improve NULL pointer safety in task information functions
* [#18122](https://github.com/apache/nuttx/pull/18122) sched/irq: Fix potential deadlock in irqchain_detach
* [#18131](https://github.com/apache/nuttx/pull/18131) sched/hrtimer: Fix functional correctness issues.
* [#18141](https://github.com/apache/nuttx/pull/18141) sched/hrtimer: refresh code comments to match implementation
* [#18160](https://github.com/apache/nuttx/pull/18160) sched/irq: Add architecture-specific IRQ-to-index mapping interface
* [#18174](https://github.com/apache/nuttx/pull/18174) sched/hrtimer: fix hrtimer regression introduced by recent update and add support for tickless with hrtimer
* [#18175](https://github.com/apache/nuttx/pull/18175) sched/irq: functions should have exactly one exit point
* [#18183](https://github.com/apache/nuttx/pull/18183) sched: Remove FS_PROCFS dependency for SCHED_CRITMONITOR
* [#18184](https://github.com/apache/nuttx/pull/18184) sched: Remove legacy sched_resumescheduler.c
* [#18187](https://github.com/apache/nuttx/pull/18187) sched: call spinlock nopreempt when need disable context swi…
* [#18189](https://github.com/apache/nuttx/pull/18189) sched: replace critical section with spinlock
* [#18190](https://github.com/apache/nuttx/pull/18190) sched/irq: Avoid negative array index in irqchain_dispatch
* [#18191](https://github.com/apache/nuttx/pull/18191) sched/irq: Fix type mismatch in irq_dispatch (MISRA C-2012 Rule 10.3)
* [#18192](https://github.com/apache/nuttx/pull/18192) sched/signal: Optimize code logic
* [#18193](https://github.com/apache/nuttx/pull/18193) sched/semaphore: Fix HIS_CALLS metric violation for MISRA compliance
* [#18196](https://github.com/apache/nuttx/pull/18196) sched: Add bounds checking to prevent OVERRUN defect
* [#18197](https://github.com/apache/nuttx/pull/18197) sched: Fix null pointer dereference (FORWARD_NULL defect)
* [#18198](https://github.com/apache/nuttx/pull/18198) sched: Reduce return points in sched_rrgetinterval() for MISRA compliance
* [#18201](https://github.com/apache/nuttx/pull/18201) sched/semaphore: Code quality improvements and MISRA compliance fixes
* [#18202](https://github.com/apache/nuttx/pull/18202) sched: Reduce return statements in sched_get_stackinfo() for MISRA compliance
* [#18203](https://github.com/apache/nuttx/pull/18203) sched/irq: Consolidate IRQ bounds checking into IRQ_TO_NDX macro
* [#18204](https://github.com/apache/nuttx/pull/18204) sched/irq: Avoid out-of-bounds array access
* [#18205](https://github.com/apache/nuttx/pull/18205) sched_setpriority: Consolidate return statements for MISRA HIS compliance
* [#18208](https://github.com/apache/nuttx/pull/18208) sched_setparam: Refactor nxsched_set_param() with helper functions for MISRA HIS compliance
* [#18210](https://github.com/apache/nuttx/pull/18210) sched: Optimize reader-writer semaphore and achieve MISRA HIS goto compliance
* [#18212](https://github.com/apache/nuttx/pull/18212) sched_getfiles: Consolidate return statements in nxsched_get_fdlist_from_tcb() for MISRA HIS compliance
* [#18215](https://github.com/apache/nuttx/pull/18215) sched_profil: Move static variable to block scope for MISRA C 2012 compliance
* [#18216](https://github.com/apache/nuttx/pull/18216) sched: Consolidate return statements for MISRA HIS compliance
* [#18217](https://github.com/apache/nuttx/pull/18217) sched_profil: Consolidate return statements for MISRA HIS compliance
* [#18220](https://github.com/apache/nuttx/pull/18220) sched_sysinfo: Consolidate return statements for MISRA HIS compliance
* [#18221](https://github.com/apache/nuttx/pull/18221) sched_get_stateinfo: Move static array to block scope for MISRA C 2012 Rule 8.9
* [#18223](https://github.com/apache/nuttx/pull/18223) sched_setscheduler: Eliminate goto statements and consolidate returns for MISRA HIS compliance
* [#18224](https://github.com/apache/nuttx/pull/18224) sched/hrtimer: Fix functional correctness issues and improve the performance.
* [#18237](https://github.com/apache/nuttx/pull/18237) sched: Consolidate return statements in sched_critmonitor() for MISRA HIS compliance
* [#18227](https://github.com/apache/nuttx/pull/18227) sched_getscheduler: Consolidate return statements for MISRA HIS compliance
* [#18235](https://github.com/apache/nuttx/pull/18235) sched_waitid: Code quality improvements for HIS compliance and complexity reduction
* [#18239](https://github.com/apache/nuttx/pull/18239) sched_cpuload: Move static wdog to block scope for MISRA C 2012 Rule 8.9
* [#18240](https://github.com/apache/nuttx/pull/18240) sched_sysinfo.c: misra_c_2012_rule_9_1_violation: uninit_use
* [#18241](https://github.com/apache/nuttx/pull/18241) Fix critical SMP scheduler issues with CPU selection and ready-to-run list management
* [#18255](https://github.com/apache/nuttx/pull/18255) sched/semaphore: optimize the source code
* [#18270](https://github.com/apache/nuttx/pull/18270) sched/spinlock: Replace critical_section with spinlock.
* [#18278](https://github.com/apache/nuttx/pull/18278) sched/sched: fix casting issue found by coverity
* [#18284](https://github.com/apache/nuttx/pull/18284) sched/clock: replace atomic operations with sequence lock for tick counter
* [#18306](https://github.com/apache/nuttx/pull/18306) sched: Fix CANCEL_FLAG_* macro definitions MISRA C:2012 Rule 10.4 violations
* [#18307](https://github.com/apache/nuttx/pull/18307) sched/spawn: Fix MISRA C Rule 10.4 violations
* [#18336](https://github.com/apache/nuttx/pull/18336) sched/waitpid: reduce cyclomatic complexity for HIS/MISRA compliance
* [#18338](https://github.com/apache/nuttx/pull/18338) sched/semaphore: Add debug assert to detect mutex recursion.
* [#18376](https://github.com/apache/nuttx/pull/18376) sched/mqueue: Enable receiving messages on an interrupt handler
* [#18437](https://github.com/apache/nuttx/pull/18437) sched/clock: fix CLOCK_BOOTTIME and CLOCK_MONOTONIC handling
* [#18438](https://github.com/apache/nuttx/pull/18438) sched/sched: fix typos and remove unused declarations in sched.h
* [#18444](https://github.com/apache/nuttx/pull/18444) sched/sched: Add nxsched_abstick_sleep() and make nxsched_ticksleep() a wrapper around it
* [#18448](https://github.com/apache/nuttx/pull/18448) sched/misc: fix incorrect mutex holder retrieval in assert backtrace
* [#18450](https://github.com/apache/nuttx/pull/18450) sched/misc: fix potential out-of-bounds access in coredump stack emission
* [#18451](https://github.com/apache/nuttx/pull/18451) sched/misc: fix incomplete data emission in coredump elf_emit function