Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > linux.kernel > #1737597

[PATCH] hv_netvsc: make const array ver_list static, reduces object code size

From Colin King <colin.king@canonical.com>
Newsgroups linux.kernel
Subject [PATCH] hv_netvsc: make const array ver_list static, reduces object code size
Date 2017-09-22 18:00 +0200
Message-ID <usywW-7Vf-23@gated-at.bofh.it> (permalink)
Organization linux.* mail to news gateway

Show all headers | View raw


From: Colin Ian King <colin.king@canonical.com>

Don't populate const array ver_list on the stack, instead make it
static. Makes the object code smaller by over 400 bytes:

Before:
   text	   data	    bss	    dec	    hex	filename
  18444	   3168	    320	  21932	   55ac	drivers/net/hyperv/netvsc.o

After:
   text	   data	    bss	    dec	    hex	filename
  17950	   3224	    320	  21494	   53f6	drivers/net/hyperv/netvsc.o

(gcc 6.3.0, x86-64)

Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
 drivers/net/hyperv/netvsc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c
index 8d5077fb0492..b0d323e24978 100644
--- a/drivers/net/hyperv/netvsc.c
+++ b/drivers/net/hyperv/netvsc.c
@@ -484,7 +484,7 @@ static int netvsc_connect_vsp(struct hv_device *device,
 			      struct netvsc_device *net_device,
 			      const struct netvsc_device_info *device_info)
 {
-	const u32 ver_list[] = {
+	static const u32 ver_list[] = {
 		NVSP_PROTOCOL_VERSION_1, NVSP_PROTOCOL_VERSION_2,
 		NVSP_PROTOCOL_VERSION_4, NVSP_PROTOCOL_VERSION_5
 	};
-- 
2.14.1

Back to linux.kernel | Previous | NextNext in thread | Find similar | Unroll thread


Thread

[PATCH] hv_netvsc:  make const array ver_list static, reduces object code size Colin King <colin.king@canonical.com> - 2017-09-22 18:00 +0200
  RE: [PATCH] hv_netvsc:  make const array ver_list static, reduces  object code size Haiyang Zhang <haiyangz@microsoft.com> - 2017-09-22 18:10 +0200
  Re: [PATCH] hv_netvsc: make const array ver_list static, reduces  object code size David Miller <davem@davemloft.net> - 2017-09-26 01:30 +0200

csiph-web