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| author | Sebastian Sanchez <sebastian.sanchez@intel.com> | 2016-10-25 23:12:28 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-11-16 00:37:27 +0300 |
| commit | 2474d775d9e2f935ff6840c8b21b4262afacc821 (patch) | |
| tree | 488fd7bff5f3edf1eafec2434ff6b3564cb1202c /drivers/infiniband/hw/hfi1/pio.h | |
| parent | fe4d924396a861937256293ff4a84b76b84854d8 (diff) | |
| download | linux-2474d775d9e2f935ff6840c8b21b4262afacc821.tar.xz | |
IB/hfi1: Get rid of divide in pio buffer allocator
The div instruction shows costly in profiles.
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 'drivers/infiniband/hw/hfi1/pio.h')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/pio.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hfi1/pio.h b/drivers/infiniband/hw/hfi1/pio.h index bd19507b6bb0..498b548055e0 100644 --- a/drivers/infiniband/hw/hfi1/pio.h +++ b/drivers/infiniband/hw/hfi1/pio.h @@ -119,6 +119,7 @@ struct send_context { unsigned long fill; /* official alloc count */ unsigned long alloc_free; /* copy of free (less cache thrash) */ u32 __percpu *buffers_allocated;/* count of buffers allocated */ + u32 fill_wrap; /* tracks fill within ring */ /* releaser fields */ spinlock_t release_lock ____cacheline_aligned_in_smp; u32 sr_tail; /* shadow ring tail */ |