wait_for_completion_io_timeout(9) [centos man page]
WAIT_FOR_COMPLETION_(9) Driver Basics WAIT_FOR_COMPLETION_(9)NAME
wait_for_completion_io_timeout - waits for completion of a task (w/timeout)
unsigned long __sched wait_for_completion_io_timeout(struct completion * x, unsigned long timeout);
holds the state of this particular completion
timeout value in jiffies
This waits for either a completion of a specific task to be signaled or for a specified timeout to expire. The timeout is in jiffies. It is
not interruptible. The caller is accounted as waiting for IO.
0 if timed out, and positive (at least 1, or number of jiffies left till timeout) if completed.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 WAIT_FOR_COMPLETION_(9)
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CCW_DEVICE_START_TIM(9) The ccw bus CCW_DEVICE_START_TIM(9)NAME
ccw_device_start_timeout - start a s390 channel program with timeout
int ccw_device_start_timeout(struct ccw_device * cdev, struct ccw1 * cpa, unsigned long intparm, __u8 lpm, unsigned long flags,
target ccw device
logical start address of channel program
user specific interruption parameter; will be presented back to cdev's interrupt handler. Allows a device driver to associate the
interrupt with a particular I/O request.
defines the channel path to be used for a specific I/O request. A value of 0 will make cio use the opm.
additional flags; defines the action to be performed for I/O processing.
timeout value in jiffies
Start a S/390 channel program. When the interrupt arrives, the IRQ handler is called, either immediately, delayed (dev-end missing, or
sense required) or never (no IRQ handler registered). This function notifies the device driver if the channel program has not completed
during the time specified by expires. If a timeout occurs, the channel program is terminated via xsch, hsch or csch, and the device's
interrupt handler will be called with an irb containing ERR_PTR(-ETIMEDOUT).
0, if the operation was successful; -EBUSY, if the device is busy, or status pending; -EACCES, if no path specified in lpm is operational;
-ENODEV, if the device is not operational.
Interrupts disabled, ccw device lock held
Cornelia Huck <firstname.lastname@example.org>
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 CCW_DEVICE_START_TIM(9)
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