From cca195a168ac062967fd1fa75c75546167b1e213 Mon Sep 17 00:00:00 2001 From: Mike Marciniszyn Date: Wed, 2 May 2012 11:21:53 -0400 Subject: [PATCH] IB/qib: Add prefetch for eager buffers Add a prefetch call when a packet has been stored. The nature of the prefetch is correctly determined by the alternatives mechanism. Signed-off-by: Mike Marciniszyn Signed-off-by: Roland Dreier --- drivers/infiniband/hw/qib/qib_driver.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/qib/qib_driver.c b/drivers/infiniband/hw/qib/qib_driver.c index 6fc9365ba8a6..8895cfec5019 100644 --- a/drivers/infiniband/hw/qib/qib_driver.c +++ b/drivers/infiniband/hw/qib/qib_driver.c @@ -38,6 +38,7 @@ #include #include #include +#include #include "qib.h" @@ -481,8 +482,10 @@ u32 qib_kreceive(struct qib_ctxtdata *rcd, u32 *llic, u32 *npkts) etail = qib_hdrget_index(rhf_addr); updegr = 1; if (tlen > sizeof(*hdr) || - etype >= RCVHQ_RCV_TYPE_NON_KD) + etype >= RCVHQ_RCV_TYPE_NON_KD) { ebuf = qib_get_egrbuf(rcd, etail); + prefetch_range(ebuf, tlen - sizeof(*hdr)); + } } if (!eflags) { u16 lrh_len = be16_to_cpu(hdr->lrh[2]) << 2; -- 2.30.2