linux-kernel - [PATCH 6/6] net: thunderx: Alloc higher order pages when pagesize is small

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Message-Id: <1454933272-45005-7-git-send-email-sunil.kovvuri@gmail.com>
Date:	Mon,  8 Feb 2016 17:37:52 +0530
From:	sunil.kovvuri@...il.com
To:	netdev@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	sgoutham@...ium.com, robert.richter@...iumnetworks.com
Subject: [PATCH 6/6] net: thunderx: Alloc higher order pages when pagesize is small

From: Sunil Goutham <sgoutham@...ium.com>

Allocate higher order pages when pagesize is small, this will
reduce number of calls to page allocator and wastage of memory.

Signed-off-by: Sunil Goutham <sgoutham@...ium.com>
---
 drivers/net/ethernet/cavium/thunder/nicvf_queues.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_queues.c b/drivers/net/ethernet/cavium/thunder/nicvf_queues.c
index 50ab6f4..5adb208 100644
--- a/drivers/net/ethernet/cavium/thunder/nicvf_queues.c
+++ b/drivers/net/ethernet/cavium/thunder/nicvf_queues.c
@@ -78,7 +78,7 @@ static void nicvf_free_q_desc_mem(struct nicvf *nic, struct q_desc_mem *dmem)
 static inline int nicvf_alloc_rcv_buffer(struct nicvf *nic, gfp_t gfp,
 					 u32 buf_len, u64 **rbuf)
 {
-	int order = get_order(buf_len);
+	int order = (PAGE_SIZE <= 4096) ?  PAGE_ALLOC_COSTLY_ORDER : 0;
 
 	/* Check if request can be accomodated in previous allocated page */
 	if (nic->rb_page) {
-- 
1.7.1