]> git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/commit
IB/hfi1: Use non-atomic __test_and_clear_bit in hot path
authorSebastian Sanchez <sebastian.sanchez@intel.com>
Thu, 8 Dec 2016 03:32:28 +0000 (19:32 -0800)
committerDoug Ledford <dledford@redhat.com>
Sun, 11 Dec 2016 20:25:13 +0000 (15:25 -0500)
commit53e91d264be9e9adbf34b83b8ce5c12452f6765e
tree12d98b46ba45608e459942d7df6372d0fecb7ab1
parentd7cf4ccf6fe52694142f65cce82decb3fe833f48
IB/hfi1: Use non-atomic __test_and_clear_bit in hot path

qp->r_aflags is already protected by qp->r_lock, therefore,
test_and_clear_bit() doesn't need to be atomic. Profile
shows this function call is costly.

Change the test_and_clear_bit() call to use the non-atomic
variant.

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>
drivers/infiniband/hw/hfi1/rc.c