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authorMike Marciniszyn <mike.marciniszyn@intel.com>2018-11-28 10:33:00 -0800
committerJason Gunthorpe <jgg@mellanox.com>2018-12-06 20:15:36 -0700
commit9aefcabe579bca06325ad9e577a36816f57386ff (patch)
tree5d51380942b4dd7b7aa7a2f8b200300f0eec5a28 /drivers/infiniband/hw/mlx4/sysfs.c
parentIB/hfi1: Close VNIC sdma_progress sleep window (diff)
downloadlinux-dev-9aefcabe579bca06325ad9e577a36816f57386ff.tar.xz
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IB/hfi1: Reduce lock contention on iowait_lock for sdma and pio
Commit 4e045572e2c2 ("IB/hfi1: Add unique txwait_lock for txreq events") laid the ground work to support per resource waiting locking. This patch adds that with a lock unique to each sdma engine and pio sendcontext and makes necessary changes for verbs, PSM, and vnic to use the new locks. This is particularly beneficial for smaller messages that will exhaust resources at a faster rate. Fixes: 7724105686e7 ("IB/hfi1: add driver files") Reviewed-by: Gary Leshner <Gary.S.Leshner@intel.com> Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband/hw/mlx4/sysfs.c')
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