* [PATCH] i40e: make const array patterns static, reduces object code size
@ 2017-09-22 14:11 Colin King
2017-09-22 16:44 ` [Intel-wired-lan] " Jesse Brandeburg
0 siblings, 1 reply; 2+ messages in thread
From: Colin King @ 2017-09-22 14:11 UTC (permalink / raw)
To: Jeff Kirsher, intel-wired-lan, netdev; +Cc: kernel-janitors, linux-kernel
From: Colin Ian King <colin.king@canonical.com>
Don't populate const array patterns on the stack, instead make it
static. Makes the object code smaller by over 60 bytes:
Before:
text data bss dec hex filename
1953 496 0 2449 991 i40e_diag.o
After:
text data bss dec hex filename
1798 584 0 2382 94e i40e_diag.o
(gcc 6.3.0, x86-64)
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
drivers/net/ethernet/intel/i40e/i40e_diag.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/intel/i40e/i40e_diag.c b/drivers/net/ethernet/intel/i40e/i40e_diag.c
index f141e78d409e..76ed56641864 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_diag.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_diag.c
@@ -36,7 +36,9 @@
static i40e_status i40e_diag_reg_pattern_test(struct i40e_hw *hw,
u32 reg, u32 mask)
{
- const u32 patterns[] = {0x5A5A5A5A, 0xA5A5A5A5, 0x00000000, 0xFFFFFFFF};
+ static const u32 patterns[] = {
+ 0x5A5A5A5A, 0xA5A5A5A5, 0x00000000, 0xFFFFFFFF
+ };
u32 pat, val, orig_val;
int i;
--
2.14.1
^ permalink raw reply related [flat|nested] 2+ messages in thread* Re: [Intel-wired-lan] [PATCH] i40e: make const array patterns static, reduces object code size
2017-09-22 14:11 [PATCH] i40e: make const array patterns static, reduces object code size Colin King
@ 2017-09-22 16:44 ` Jesse Brandeburg
0 siblings, 0 replies; 2+ messages in thread
From: Jesse Brandeburg @ 2017-09-22 16:44 UTC (permalink / raw)
To: Colin King
Cc: Jeff Kirsher, intel-wired-lan, netdev, kernel-janitors,
linux-kernel, jesse.brandeburg
On Fri, 22 Sep 2017 15:11:38 +0100
Colin King <colin.king@canonical.com> wrote:
> From: Colin Ian King <colin.king@canonical.com>
>
> Don't populate const array patterns on the stack, instead make it
> static. Makes the object code smaller by over 60 bytes:
>
> Before:
> text data bss dec hex filename
> 1953 496 0 2449 991 i40e_diag.o
>
> After:
> text data bss dec hex filename
> 1798 584 0 2382 94e i40e_diag.o
>
> (gcc 6.3.0, x86-64)
>
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
Looks good, thanks Colin!
Acked-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
^ permalink raw reply [flat|nested] 2+ messages in thread
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2017-09-22 16:44 ` [Intel-wired-lan] " Jesse Brandeburg
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