With this patch I'm able to find the definition of _xmit_lock defined in
include/linux/netdevice.h as follows:
	struct net_device {
		...
		spinlock_t _xmit_lock ____cacheline_aligned_in_smp;
	}
Otherwise this counts as definition of ____cacheline_aligned_in_smp.
Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
        if $1 --version 2>&1 | grep -iq exuberant; then \
            $(all-sources) | xargs $1 -a \
                -I __initdata,__exitdata,__acquires,__releases \
+               -I __read_mostly,____cacheline_aligned,____cacheline_aligned_in_smp,____cacheline_internodealigned_in_smp \
                -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
                --extra=+f --c-kinds=+px \
                --regex-asm='/^ENTRY\(([^)]*)\).*/\1/'; \