Commit Graph

5 Commits

Author SHA1 Message Date
Jim Harris
0babf8ce81 bdev, copy: move all I/O paths to use I/O channels
bdev and copy modules no longer have check_io functions
now - all polling is done via pollers registered when
I/O channels are created.

Other default resources are also removed - for example,
a qpair is no longer allocated and assigned per bdev
exposed by the nvme driver - the qpairs are only allocated
via I/O channels.  Similar principle also applies to the
aio driver.

ioat channels are no longer allocated and assigned to
lcores - they are dynamically allocated and assigned
to I/O channels when needed.  If no ioat channel is
available for an I/O channel, the copy engine framework
will revert to using memcpy/memset instead.

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I99435a75fe792a2b91ab08f25962dfd407d6402f
2016-09-26 14:02:07 -07:00
Jim Harris
746a54bef8 bdev: create new get_channel/put_channel function pointers
Also implement these functions for all of the bdev drivers in
the tree.

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: Idea97743d601150044b1fe2d9d76e922d46d3ee1
2016-09-26 14:02:07 -07:00
Jim Harris
a30b59fa33 aio: create blockdev_aio_io_channel abstraction
This breaks out the resources needed to perform
aio-based I/O into a separate data structure, as a steps
towards some future patches that will enable per-thread
resources to enable parallel I/O without synchronization.

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I84b95713133f9c411863ff0aeef8f886a08e0857
2016-09-22 09:12:36 -07:00
Ben Walker
6e09a48e42 bdev: Separate the module header from the public header
Bdev modules need a separate interface than public
consumers of the blockdevs.

Change-Id: I581ee493570c114f7e96b31a425bc077a791c71e
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
2016-08-26 09:40:06 -07:00
Daniel Verkamp
021be6df16 bdev: add Linux AIO (libaio) backend
Change-Id: I6e7de4330f0c792514df21557a3010adef08c670
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
2016-08-05 09:08:23 -07:00