need_resched

**调用者**
名称	描述
mwait_idle	MONITOR/MWAIT with no hints, used for default C1 state. This invokes MWAIT* with interrupts enabled and no flags, which is backwards compatible with the* original MWAIT implementation.
apm_do_idle	apm_do_idle - perform power saving* This function notifies the BIOS that the processor is (in the view* of the OS) idle. It returns -1 in the event that the BIOS refuses* to handle the idle request. On a success the function returns 1
apm_cpu_idle
__do_softirq
schedule	进程调度
schedule_idle	synchronize_rcu_tasks() makes sure that no task is stuck in preempted* state (have scheduled out non-voluntarily) by making sure that all* tasks have either left the run queue or have gone into user space
preempt_schedule_common
preempt_schedule_irq	This is the entry point to schedule() from kernel preemption* off of irq context.* Note, that this is called and return with irqs disabled. This will* protect us against recursive calling from irq.
cpuidle_idle_call	puidle_idle_call - the main idle function* NOTE: no locks or semaphores should be used here* On archs that support TIF_POLLING_NRFLAG, is called with polling* set, and it returns with polling set. If it ever stops polling, it* must clear the polling bit.
do_idle	Generic idle loop implementation* Called with polling cleared.
osq_lock
rcu_torture_fwd_prog_cond_resched	Give the scheduler a chance, even on nohz_full CPUs.
rcu_torture_fwd_prog_nr	Carry out need_resched()/cond_resched() forward-progress testing.
rcu_do_batch	Invoke any RCU callbacks that have made it to the end of their grace* period. Thottle as specified by rdp->blimit.
cgroup_rstat_flush_locked	see cgroup_rstat_flush()
do_check
copy_pte_range
zap_pte_range
blk_poll	lk_poll - poll for IO completions@q: the queue@cookie: cookie passed back at IO submission time@spin: whether to spin for completions Description:* Poll for completions on the passed in queue. Returns number of* completed entries found
key_garbage_collector	Reaper for unused keys.
do_select
do_poll
select_collect
select_collect2
evict_inodes	vict_inodes - evict all evictable inodes for a superblock@sb: superblock to operate on Make sure that no inodes with zero refcount are retained
invalidate_inodes	validate_inodes - attempt to free all inodes on a superblock@sb: superblock to operate on@kill_dirty: flag to guide handling of dirty inodes* Attempts to free all inodes for a given superblock. If there were any
scan_positives	Returns an element of siblings' list.* We are looking for th positive after ; if* found, dentry is grabbed and returned to caller.* If no such element exists, NULL is returned.
writeback_sb_inodes	Write a portion of b_io inodes which belong to @sb.* Return the number of pages and/or inodes written.* NOTE! This is called with wb->list_lock held, and will* unlock and relock that for each inode it ends up doing* IO for.
io_iopoll_getevents	Poll for a minimum of 'min' events. Note that if min == 0 we consider that a* non-spinning poll check - we'll still enter the driver poll loop, but only* as a non-spinning completion check.
io_iopoll_check
io_worker_spin_for_work
drop_pagecache_sb
mwait_idle_with_hints	This uses new MONITOR/MWAIT instructions on P4 processors with PNI,* which can obviate IPI to trigger checking of need_resched.* We execute MONITOR against need_resched and enter optimized wait state* through MWAIT

函数逻辑报告