From: Ignacio Hernandez <ignacio.hernandez@intel.com>
Date: Mon, 26 Oct 2015 14:28:42 +0000 (-0400)
Subject: staging/rdma/hfi1: Increase SDMA descriptor queue size
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=028d72545bca0670c7efc5b13fc9ea05a2f55643;p=deliverable%2Flinux.git

staging/rdma/hfi1: Increase SDMA descriptor queue size

A value of 2048 increased PSM performance while not impacting verbs
performance.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Ignacio Hernandez <ignacio.hernandez@intel.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/rdma/hfi1/sdma.c b/drivers/staging/rdma/hfi1/sdma.c
index 64e63beacf1f..0b3cf83773f6 100644
--- a/drivers/staging/rdma/hfi1/sdma.c
+++ b/drivers/staging/rdma/hfi1/sdma.c
@@ -65,7 +65,7 @@
 #include "trace.h"
 
 /* must be a power of 2 >= 64 <= 32768 */
-#define SDMA_DESCQ_CNT 1024
+#define SDMA_DESCQ_CNT 2048
 #define SDMA_DESC_INTR 64
 #define INVALID_TAIL 0xffff