From ca85bb1ca9948899682fe7170636e465599ea8e7 Mon Sep 17 00:00:00 2001 From: Sebastian Sanchez Date: Thu, 1 Feb 2018 10:46:38 -0800 Subject: IB/hfi1: Remove unnecessary fecn and becn fields packet->fecn and packet->becn are calculated in the hot path and are never used. Remove these fields as they show to be costly in a profile. Also, remove initialization for becn and fecn in process_ecn() as they're unconditionally assigned in the function and ensure fecn and becn variables use a boolean type. Reviewed-by: Mike Marciniszyn Signed-off-by: Sebastian Sanchez Signed-off-by: Dennis Dalessandro Signed-off-by: Jason Gunthorpe --- drivers/infiniband/hw/hfi1/hfi.h | 16 +++++----------- 1 file changed, 5 insertions(+), 11 deletions(-) (limited to 'drivers/infiniband/hw/hfi1/hfi.h') diff --git a/drivers/infiniband/hw/hfi1/hfi.h b/drivers/infiniband/hw/hfi1/hfi.h index 2c257ac685e7..105d11dcc554 100644 --- a/drivers/infiniband/hw/hfi1/hfi.h +++ b/drivers/infiniband/hw/hfi1/hfi.h @@ -352,8 +352,6 @@ struct hfi1_packet { u8 sc; u8 sl; u8 opcode; - bool becn; - bool fecn; bool migrated; }; @@ -1781,19 +1779,15 @@ void hfi1_process_ecn_slowpath(struct rvt_qp *qp, struct hfi1_packet *pkt, static inline bool process_ecn(struct rvt_qp *qp, struct hfi1_packet *pkt, bool do_cnp) { - struct ib_other_headers *ohdr = pkt->ohdr; - - u32 bth1; - bool becn = false; - bool fecn = false; + bool becn; + bool fecn; if (pkt->etype == RHF_RCV_TYPE_BYPASS) { fecn = hfi1_16B_get_fecn(pkt->hdr); becn = hfi1_16B_get_becn(pkt->hdr); } else { - bth1 = be32_to_cpu(ohdr->bth[1]); - fecn = bth1 & IB_FECN_SMASK; - becn = bth1 & IB_BECN_SMASK; + fecn = ib_bth_get_fecn(pkt->ohdr); + becn = ib_bth_get_becn(pkt->ohdr); } if (unlikely(fecn || becn)) { hfi1_process_ecn_slowpath(qp, pkt, do_cnp); @@ -2419,7 +2413,7 @@ static inline void hfi1_make_ib_hdr(struct ib_header *hdr, static inline void hfi1_make_16b_hdr(struct hfi1_16b_header *hdr, u32 slid, u32 dlid, u16 len, u16 pkey, - u8 becn, u8 fecn, u8 l4, + bool becn, bool fecn, u8 l4, u8 sc) { u32 lrh0 = 0; -- cgit v1.2.3