Dave Jiang 0d5c10b4c8 dmaengine: idxd: add work queue drain support ... Add wq drain support. When a wq is being released, it needs to wait for all in-flight operation to complete. A device control function idxd_wq_drain() has been added to facilitate this. A wq drain call is added to the char dev on release to make sure all user operations are complete. A wq drain is also added before the wq is being disabled. A drain command can take an unpredictable period of time. Interrupt support for device commands is added to allow waiting on the command to finish. If a previous command is in progress, the new submitter can block until the current command is finished before proceeding. The interrupt based submission will submit the command and then wait until a command completion interrupt happens to complete. All commands are moved to the interrupt based command submission except for the device reset during probe, which will be polled. Fixes: 42d279f913 ("dmaengine: idxd: add char driver to expose submission portal to userland") Signed-off-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Tony Luck <tony.luck@intel.com> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Link: https://lore.kernel.org/r/159319502515.69593.13451647706946040301.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>		2020-07-13 14:48:02 +05:30
..
cdev.c	dmaengine: idxd: add work queue drain support	2020-07-13 14:48:02 +05:30
device.c	dmaengine: idxd: add work queue drain support	2020-07-13 14:48:02 +05:30
dma.c
idxd.h	dmaengine: idxd: add work queue drain support	2020-07-13 14:48:02 +05:30
init.c	dmaengine: idxd: add work queue drain support	2020-07-13 14:48:02 +05:30
irq.c	dmaengine: idxd: add work queue drain support	2020-07-13 14:48:02 +05:30
Makefile
registers.h
submit.c
sysfs.c	dmaengine: idxd: add work queue drain support	2020-07-13 14:48:02 +05:30