RDMA/cxgb3: Don't add PBL memory to gen_pool in chunks

Browse source

Current iw_cxgb3 code adds PBL memory to the driver's gen_pool in 2 MB
chunks.  This limits the largest single allocation that can be done to
the same size, which means that with 4 KB pages, each of which takes 8
bytes of PBL memory, the largest memory region that can be allocated
is 1 GB (256K PBL entries * 4 KB/entry).

Remove this limit by adding all the PBL memory in a single gen_pool
chunk, if possible.  Add code that falls back to smaller chunks if
gen_pool_add() fails, which can happen if there is not sufficient
contiguous lowmem for the internal gen_pool bitmap.

Signed-off-by: Roland Dreier <rolandd@cisco.com>

...

This commit is contained in:

Roland Dreier 2008-05-06 15:03:38 -07:00

parent a15306365a

commit 0e9913362a

1 changed files with 28 additions and 8 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

36

drivers/infiniband/hw/cxgb3/cxio_resource.c

View file