net: use .data.once section in netdev_level_once()

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

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 31a7e6b..dd32836 100644 (file)
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -4942,7 +4942,7 @@ 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;                            \