netdev - [PATCH net-next 2/3] net: use .data.once section in netdev_level

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Message-Id: <20211115172303.3732746-3-eric.dumazet@gmail.com>
Date:   Mon, 15 Nov 2021 09:23:02 -0800
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     netdev <netdev@...r.kernel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Eric Dumazet <eric.dumazet@...il.com>
Subject: [PATCH net-next 2/3] net: use .data.once section in netdev_level_once()

From: Eric Dumazet <edumazet@...gle.com>

Same rationale than prior patch : using the dedicated
section avoid holes and pack all these bool values.

Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
 include/linux/netdevice.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 3ec42495a43a56dbd51fecd166d572a9e586e3e4..e6beb603537572aae64e33ea2c739741b4f97ce5 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -5291,7 +5291,7 @@ void netdev_info(const struct net_device *dev, const char *format, ...);
 
 #define netdev_level_once(level, dev, fmt, ...)			\
 do {								\
-	static bool __print_once __read_mostly;			\
+	static bool __section(".data.once") __print_once;	\
 								\
 	if (!__print_once) {					\
 		__print_once = true;				\
-- 
2.34.0.rc1.387.gb447b232ab-goog