get_pi_state

Name:get_pi_state

Proto:static void get_pi_state(struct futex_pi_state *pi_state)

Type:void

Parameter:

Type	Parameter	Name
struct futex_pi_state *	pi_state

845

WARN_ON_ONCE(!_inc_not_zero - increment a refcount unless it is 0*@r: the refcount to increment* Similar to atomic_inc_not_zero(), but will saturate at REFCOUNT_SATURATED* and WARN.* Provides no memory ordering, it is assumed the caller has guaranteed the)

**Caller**
Name	Describe
attach_to_pi_state	Validate that the existing waiter has a pi_state and sanity check* the pi_state against the user space value. If correct, attach to* it.
futex_requeue	ex_requeue() - Requeue waiters from uaddr1 to uaddr2@uaddr1: source futex user address@flags: futex flags (FLAGS_SHARED, etc
futex_lock_pi	Userspace tried a 0 -> TID atomic transition of the futex value* and failed. The kernel side here does the whole locking operation:* if there are waiters then it will block as a consequence of relying* on rt-mutexes, it does PI, etc
futex_unlock_pi	Userspace attempted a TID -> 0 atomic transition, and failed.* This is the in-kernel slowpath: we look up the PI state (if any),* and do the rt-mutex unlock.
futex_wait_requeue_pi	ex_wait_requeue_pi() - Wait on uaddr and take uaddr2@uaddr: the futex we initially wait on (non-pi)@flags: futex flags (FLAGS_SHARED, FLAGS_CLOCKRT, etc

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