[PATCH] brcm80211: make const array ucode_ofdm_rates static, reduces object code size

Subsystems: broadcom brcm80211 ieee802.11 wireless drivers, the rest

STALE3267d

3 messages, 3 authors, 2017-09-25 · open the first message on its own page

[PATCH] brcm80211: make const array ucode_ofdm_rates static, reduces object code size

From: Colin King <hidden>
Date: 2017-09-22 14:03:25

From: Colin Ian King <redacted>

Don't populate const array ucode_ofdm_rates on the stack, instead make it
static. Makes the object code smaller by 100 bytes:

Before:
   text	   data	    bss	    dec	    hex	filename
  39482	    564	      0	  40046	   9c6e	phy_cmn.o

After
   text	   data	    bss	    dec	    hex	filename
  39326	    620	      0	  39946	   9c0a	phy_cmn.o

(gcc 6.3.0, x86-64)

Signed-off-by: Colin Ian King <redacted>
---
 drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_cmn.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_cmn.c b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_cmn.c
index 1c4e9dd57960..3a13d176b221 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_cmn.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_cmn.c
@@ -1916,7 +1916,7 @@ void wlc_phy_txpower_update_shm(struct brcms_phy *pi)
 				     pi->hwpwr_txcur);
 
 		for (j = TXP_FIRST_OFDM; j <= TXP_LAST_OFDM; j++) {
-			const u8 ucode_ofdm_rates[] = {
+			static const u8 ucode_ofdm_rates[] = {
 				0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c
 			};
 			offset = wlapi_bmac_rate_shm_offset(
-- 
2.14.1

Re: [PATCH] brcm80211: make const array ucode_ofdm_rates static, reduces object code size

From: Arend van Spriel <arend.vanspriel@broadcom.com>
Date: 2017-09-22 16:51:48

Please use 'brcmsmac:' as prefix instead of 'brcm80211:'.

On 22-09-17 16:03, Colin King wrote:
From: Colin Ian King <redacted>

Don't populate const array ucode_ofdm_rates on the stack, instead make it
static. Makes the object code smaller by 100 bytes:

Before:
    text	   data	    bss	    dec	    hex	filename
   39482	    564	      0	  40046	   9c6e	phy_cmn.o

After
    text	   data	    bss	    dec	    hex	filename
   39326	    620	      0	  39946	   9c0a	phy_cmn.o

(gcc 6.3.0, x86-64)
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
quoted hunk
Signed-off-by: Colin Ian King <redacted>
---
  drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_cmn.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_cmn.c b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_cmn.c
index 1c4e9dd57960..3a13d176b221 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_cmn.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_cmn.c
@@ -1916,7 +1916,7 @@ void wlc_phy_txpower_update_shm(struct brcms_phy *pi)
  				     pi->hwpwr_txcur);
  
  		for (j = TXP_FIRST_OFDM; j <= TXP_LAST_OFDM; j++) {
-			const u8 ucode_ofdm_rates[] = {
+			static const u8 ucode_ofdm_rates[] = {
  				0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c
  			};
  			offset = wlapi_bmac_rate_shm_offset(

Re: brcmsmac: make const array ucode_ofdm_rates static, reduces object code size

From: Kalle Valo <hidden>
Date: 2017-09-25 08:23:38

Colin Ian King [off-list ref] wrote:
From: Colin Ian King <redacted>

Don't populate const array ucode_ofdm_rates on the stack, instead make it
static. Makes the object code smaller by 100 bytes:

Before:
   text	   data	    bss	    dec	    hex	filename
  39482	    564	      0	  40046	   9c6e	phy_cmn.o

After
   text	   data	    bss	    dec	    hex	filename
  39326	    620	      0	  39946	   9c0a	phy_cmn.o

(gcc 6.3.0, x86-64)

Signed-off-by: Colin Ian King <redacted>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Patch applied to wireless-drivers-next.git, thanks.

d5633bb2c62a brcmsmac: make const array ucode_ofdm_rates static, reduces object code size

-- 
https://patchwork.kernel.org/patch/9966221/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
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