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authorIra Weiny <ira.weiny@intel.com>2015-06-06 14:38:30 -0400
committerDoug Ledford <dledford@redhat.com>2015-06-12 14:49:17 -0400
commitc9082e51b6a4ba0272c30027d87e67c6652a725d (patch)
treeaac79d30829b3602d5713c8dfa3e4b037d191aaa /drivers/infiniband/hw/mlx4/mad.c
parentIB/core: Add ability for drivers to report an alternate MAD size. (diff)
downloadlinux-dev-c9082e51b6a4ba0272c30027d87e67c6652a725d.tar.xz
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IB/mad: Convert allocations from kmem_cache to kzalloc
This patch implements allocating alternate receive MAD buffers within the MAD stack. Support for OPA to send/recv variable sized MADs is implemented later. 1) Convert MAD allocations from kmem_cache to kzalloc kzalloc is more flexible to support devices with different sized MADs and research and testing showed that the current use of kmem_cache does not provide performance benefits over kzalloc. 2) Change struct ib_mad_private to use a flex array for the mad data 3) Allocate ib_mad_private based on the size specified by devices in rdma_max_mad_size. 4) Carry the allocated size in ib_mad_private to be used when processing ib_mad_private objects. 5) Alter DMA mappings based on the mad_size of ib_mad_private. 6) Replace the use of sizeof and static defines as appropriate 7) Add appropriate casts for the MAD data when calling processing functions. Signed-off-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/mlx4/mad.c')
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