linux-kernel - [PATCH] rsi: make array fsm_state static const, makes object smaller

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Message-Id: <20210819125018.8577-1-colin.king@canonical.com>
Date:   Thu, 19 Aug 2021 13:50:18 +0100
From:   Colin King <colin.king@...onical.com>
To:     Amitkumar Karwar <amitkarwar@...il.com>,
        Siva Rebbagondla <siva8118@...il.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] rsi: make array fsm_state static const, makes object smaller

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

Don't populate the array fsm_state on the stack but instead it
static const. Makes the object code smaller by 154 bytes:

Before:
   text	   data	    bss	    dec	    hex	filename
   9213	   3904	      0	  13117	   333d	.../wireless/rsi/rsi_91x_debugfs.o

After:
   text	   data	    bss	    dec	    hex	filename
   8995	   3968	      0	  12963	   32a3	.../wireless/rsi/rsi_91x_debugfs.o

(gcc version 10.3.0)

Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 drivers/net/wireless/rsi/rsi_91x_debugfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/rsi/rsi_91x_debugfs.c b/drivers/net/wireless/rsi/rsi_91x_debugfs.c
index 24a417ea2ae7..f404ca4c38e8 100644
--- a/drivers/net/wireless/rsi/rsi_91x_debugfs.c
+++ b/drivers/net/wireless/rsi/rsi_91x_debugfs.c
@@ -117,7 +117,7 @@ static int rsi_stats_read(struct seq_file *seq, void *data)
 {
 	struct rsi_common *common = seq->private;
 
-	unsigned char fsm_state[][32] = {
+	static const unsigned char fsm_state[][32] = {
 		"FSM_FW_NOT_LOADED",
 		"FSM_CARD_NOT_READY",
 		"FSM_COMMON_DEV_PARAMS_SENT",
-- 
2.32.0