workqueue_create(9) - NetBSD Manual Pages

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WORKQUEUE_CREATE(9)    NetBSD Kernel Developer's Manual    WORKQUEUE_CREATE(9)


NAME

     workqueue_create -- Create a workqueue


SYNOPSIS

     #include <sys/workqueue.h>

     int
     workqueue_create(struct workqueue **wqp, const char *name,
         void (*func)(struct work *, void *), void *arg, pri_t prio, int ipl,
         int flags);


DESCRIPTION

     workqueue_create() creates a workqueue.  It takes the following argu-
     ments.

     wqp    Specify where to store the created workqueue.

     name   The name of the workqueue.

     func   The function to be called for each work.

     arg    An argument to be passed as a second argument of func.

     prio   The process priority to be used when sleeping to wait requests.

     ipl    The highest IPL at which this workqueue is used.

     flags  The value of 0 indicates a standard create operation, however the
            following flags may be bitwise ORed together:

            WQ_MPSAFE  Specifies that the workqueue is multiprocessor safe and
                       does its own locking, otherwise the kernel lock will be
                       held while work will be processed.

            WQ_PERCPU  Specifies that the workqueue should have a separate
                       queue for each CPU, thus the work could be enqueued on
                       concrete CPUs.


RETURN VALUES

     workqueue_create() returns 0 on success.  Otherwise, it returns an
     errno(2).


SEE ALSO

     errno(2), condvar(9), intro(9), workqueue(9)

NetBSD 5.1                      August 5, 2007                      NetBSD 5.1