Searched hist:"1451 f414639465995dfc1f820aa1a64723cbd662" (Results 1 – 4 of 4) sorted by relevance
| /linux/drivers/misc/genwqe/ |
| H A D | card_debugfs.c | diff 1451f414639465995dfc1f820aa1a64723cbd662 Wed Sep 10 16:37:53 CEST 2014 Frank Haverkamp <haver@linux.vnet.ibm.com> GenWQE: Support blocking when DDCB queue is busy
When the GenWQE hardware queue was busy, the driver returned simply
-EBUSY. This caused polling by applications which increased the load
on the already busy system. This change implements the possiblity to
sleep on a waitqueue instead when the DDCB queue is busy. The
requestor is woken up when there is free space on the queue again.
The old way to get -EBUSY is still available if the device is openend
with O_NONBLOCKING. The default is now blocking behavior.
Signed-off-by: Frank Haverkamp <haver@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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| H A D | card_base.h | diff 1451f414639465995dfc1f820aa1a64723cbd662 Wed Sep 10 16:37:53 CEST 2014 Frank Haverkamp <haver@linux.vnet.ibm.com> GenWQE: Support blocking when DDCB queue is busy
When the GenWQE hardware queue was busy, the driver returned simply
-EBUSY. This caused polling by applications which increased the load
on the already busy system. This change implements the possiblity to
sleep on a waitqueue instead when the DDCB queue is busy. The
requestor is woken up when there is free space on the queue again.
The old way to get -EBUSY is still available if the device is openend
with O_NONBLOCKING. The default is now blocking behavior.
Signed-off-by: Frank Haverkamp <haver@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
| H A D | card_ddcb.c | diff 1451f414639465995dfc1f820aa1a64723cbd662 Wed Sep 10 16:37:53 CEST 2014 Frank Haverkamp <haver@linux.vnet.ibm.com> GenWQE: Support blocking when DDCB queue is busy
When the GenWQE hardware queue was busy, the driver returned simply
-EBUSY. This caused polling by applications which increased the load
on the already busy system. This change implements the possiblity to
sleep on a waitqueue instead when the DDCB queue is busy. The
requestor is woken up when there is free space on the queue again.
The old way to get -EBUSY is still available if the device is openend
with O_NONBLOCKING. The default is now blocking behavior.
Signed-off-by: Frank Haverkamp <haver@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
| H A D | card_dev.c | diff 1451f414639465995dfc1f820aa1a64723cbd662 Wed Sep 10 16:37:53 CEST 2014 Frank Haverkamp <haver@linux.vnet.ibm.com> GenWQE: Support blocking when DDCB queue is busy
When the GenWQE hardware queue was busy, the driver returned simply
-EBUSY. This caused polling by applications which increased the load
on the already busy system. This change implements the possiblity to
sleep on a waitqueue instead when the DDCB queue is busy. The
requestor is woken up when there is free space on the queue again.
The old way to get -EBUSY is still available if the device is openend
with O_NONBLOCKING. The default is now blocking behavior.
Signed-off-by: Frank Haverkamp <haver@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|