do_smart_update

Name:do_smart_update - optimized update_queue*@sma: semaphore array*@sops: operations that were performed*@nsops: number of operations*@otime: force setting otime*@wake_q: lockless wake-queue head* do_smart_update() does the required calls to update_queue and

Proto:static void do_smart_update(struct sem_array *sma, struct sembuf *sops, int nsops, int otime, struct wake_q_head *wake_q)

Type:void

Parameter:

Type	Parameter	Name
struct sem_array *	sma
struct sembuf *	sops
int	nsops
int	otime
struct wake_q_head *	wake_q

1015

otime |= do_smart_wakeup_zero - wakeup all wait for zero tasks*@sma: semaphore array*@sops: operations that were performed*@nsops: number of operations*@wake_q: lockless wake-queue head* Checks all required queue for wait-for-zero operations, based

1017

If Not list_empty - tests whether a list is empty*@head: the list to test. Then

1019

otime |= pdate_queue - look for tasks that can be completed.*@sma: semaphore array.*@semnum: semaphore that was modified.*@wake_q: lockless wake-queue head.* update_queue must be called after a semaphore in a semaphore array* was modified

1020

Else

1021

If Not sops Then

1026

When i < . of semaphores in array cycle otime |= pdate_queue - look for tasks that can be completed.*@sma: semaphore array.*@semnum: semaphore that was modified.*@wake_q: lockless wake-queue head.* update_queue must be called after a semaphore in a semaphore array* was modified

1028

Else

1038

When i < nsops cycle

1039

If semaphore operation > 0 Then

1040

otime |= pdate_queue - look for tasks that can be completed.*@sma: semaphore array.*@semnum: semaphore that was modified.*@wake_q: lockless wake-queue head.* update_queue must be called after a semaphore in a semaphore array* was modified

1046

If otime Then set_semotime - set sem_otime*@sma: semaphore array*@sops: operations that modified the array, may be NULL* sem_otime is replicated to avoid cache line trashing.* This function sets one instance to the current time.

**Caller**
Name	Describe
semctl_setval
semctl_main
do_semtimedop
exit_sem	add semadj values to semaphores, free undo structures

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