IB/hfi1: Remove atomic SDMA_REQ_HAS_ERROR bit operation

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Atomic bit tests are used to single errors and the
completion of request submissions. These operations
don't need to be atomic and show to be expensive on
the profile.

Replace each atomic bit operation with a bool type
and a READ_ONCE/WRITE_ONCE pairing.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Sebastian Sanchez <sebastian.sanchez@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

...

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Sebastian Sanchez 2017-05-26 05:35:50 -07:00 • committed by Doug Ledford

parent b888429c20

commit e9c48ebd0c

1 changed files with 7 additions and 15 deletions

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22

drivers/infiniband/hw/hfi1/user_sdma.c

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