timer_wait_running

Name:On PREEMPT_RT this prevent priority inversion against softirq kthread in* case it gets preempted while executing a timer callback. See comments in* hrtimer_cancel_wait_running. For PREEMPT_RT=n this just results in a* cpu_relax().

Proto:static struct k_itimer *timer_wait_running(struct k_itimer *timer, unsigned long *flags)

Type:struct k_itimer

Parameter:

Type	Parameter	Name
struct k_itimer *	timer
unsigned long *	flags

822

kc = READ_ONCE(kclock)

823

timer_id = READ_ONCE(it_id)

826

_read_lock() - mark the beginning of an RCU read-side critical section* When synchronize_rcu() is invoked on one CPU while other CPUs* are within RCU read-side critical sections, then the* synchronize_rcu() is guaranteed to block until after all the other

827

unlock_timer(timer, * flags)

829

If Not WARN_ON_ONCE(!timer_wait_running) Then timer_wait_running(timer)

832

_read_unlock() - marks the end of an RCU read-side critical section.* In most situations, rcu_read_unlock() is immune from deadlock.* However, in kernels built with CONFIG_RCU_BOOST, rcu_read_unlock()

834

Return lock_timer(timer_id, flags)

**Caller**
Name	Describe
do_timer_settime
SYSCALL_DEFINE1	Delete a POSIX.1b interval timer.

Source code conversion tool public plug-in interface	X
Support c/c++/esqlc/java Oracle/Informix/Mysql Plug-in can realize: logical Report Code generation and batch code conversion

Function report