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IB/hfi1, IB/rdmavt: Move r_adefered to r_lock cache line

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This field is causing excessive cache line bouncing.

There are spare bytes in the r_lock cache line so the best approach
is to make an rvt QP field and remove from the hfi1 priv field.

Signed-off-by: Sebastian Sanchez <[email protected]>
Signed-off-by: Mike Marciniszyn <[email protected]>
Signed-off-by: Dennis Dalessandro <[email protected]>
Signed-off-by: Doug Ledford <[email protected]>
This commit is contained in:
Mike Marciniszyn 2017-05-04 05:14:04 -07:00 • committed by Doug Ledford
commit 688f21c0be
4 changed files with 6 additions and 13 deletions
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1
include/rdma/rdmavt_qp.h
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@ -324,6 +324,7 @@ struct rvt_qp {
u8 r_state; /* opcode of last packet received */
u8 r_flags;
u8 r_head_ack_queue; /* index into s_ack_queue[] */
u8 r_adefered; /* defered ack count */
struct list_head rspwait; /* link for waiting to respond */