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| author | Sebastian Sanchez <sebastian.sanchez@intel.com> | 2017-05-26 15:35:44 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2017-06-27 23:58:12 +0300 |
| commit | b888429c202197916c8c549811a2dd62f090280d (patch) | |
| tree | b14810f8a3f6c79550d42f8eef76076b579cba6b /include/linux | |
| parent | cb49366f3616fdf197893c24a5b2677b8c26ce29 (diff) | |
| download | linux-b888429c202197916c8c549811a2dd62f090280d.tar.xz | |
IB/hfi1: Remove atomic SDMA_REQ_SEND_DONE bit operation
The atomic SDMA_REQ_SEND_DONE bit is set by the
process-level code, and then the same process-level
code uses the bit to test that all packets have been
submitted incurring a costly atomic read.
Use a bool type with a READ_ONCE/WRITE_ONCE
pairing for this bit, and use the same condition that
is used to set the bit to test that all packets have
been submitted.
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>
Diffstat (limited to 'include/linux')
0 files changed, 0 insertions, 0 deletions