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Commit ba905f5e authored by Kim Jones's avatar Kim Jones Committed by David S. Miller
Browse files

ethtool: Declare netdev_rss_key as __read_mostly. 



netdev_rss_key is written to once and thereafter is read by
drivers when they are initialising. The fact that it is mostly
read and not written to makes it a candidate for a __read_mostly
declaration.

Signed-off-by: default avatarKim Jones <kim-marie.jones@intel.com>
Signed-off-by: default avatarAlan Carey <alan.carey@intel.com>
Acked-by: default avatarRami Rosen <rami.rosen@intel.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent ef449678

include/linux/netdevice.h

+1 −1
Original line number Diff line number Diff line
@@ -3744,7 +3744,7 @@ void netdev_lower_state_changed(struct net_device *lower_dev, 


/* RSS keys are 40 or 52 bytes long */

#define NETDEV_RSS_KEY_LEN 52

extern u8 netdev_rss_key[NETDEV_RSS_KEY_LEN];

extern u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly;

void netdev_rss_key_fill(void *buffer, size_t len);



int dev_get_nest_level(struct net_device *dev,

net/core/ethtool.c

+1 −1
Original line number Diff line number Diff line
@@ -632,7 +632,7 @@ static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr, 
	return 0;

}



u8 netdev_rss_key[NETDEV_RSS_KEY_LEN];

u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly;



void netdev_rss_key_fill(void *buffer, size_t len)

{