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| author | Vladimir Oltean <vladimir.oltean@nxp.com> | 2022-05-11 13:06:36 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-05-12 16:39:17 -0700 |
| commit | 6d0be600477089026c76fe529bd96fad4cf69c3b (patch) | |
| tree | 29622a5baac7ccc0ee444bf97930c682a53ae95d /include/soc | |
| parent | 15f6d01e4829cd2a2dc4f02a00c51d7cec1c736d (diff) | |
| download | lwn-6d0be600477089026c76fe529bd96fad4cf69c3b.tar.gz lwn-6d0be600477089026c76fe529bd96fad4cf69c3b.zip | |
net: mscc: ocelot: minimize holes in struct ocelot_port
Reorder members of struct ocelot_port to eliminate holes and reduce
structure size. Pahole says:
Before:
struct ocelot_port {
struct ocelot * ocelot; /* 0 8 */
struct regmap * target; /* 8 8 */
bool vlan_aware; /* 16 1 */
/* XXX 7 bytes hole, try to pack */
const struct ocelot_bridge_vlan * pvid_vlan; /* 24 8 */
unsigned int ptp_skbs_in_flight; /* 32 4 */
u8 ptp_cmd; /* 36 1 */
/* XXX 3 bytes hole, try to pack */
struct sk_buff_head tx_skbs; /* 40 96 */
/* --- cacheline 2 boundary (128 bytes) was 8 bytes ago --- */
u8 ts_id; /* 136 1 */
/* XXX 3 bytes hole, try to pack */
phy_interface_t phy_mode; /* 140 4 */
bool is_dsa_8021q_cpu; /* 144 1 */
bool learn_ena; /* 145 1 */
/* XXX 6 bytes hole, try to pack */
struct net_device * bond; /* 152 8 */
bool lag_tx_active; /* 160 1 */
/* XXX 1 byte hole, try to pack */
u16 mrp_ring_id; /* 162 2 */
/* XXX 4 bytes hole, try to pack */
struct net_device * bridge; /* 168 8 */
int bridge_num; /* 176 4 */
u8 stp_state; /* 180 1 */
/* XXX 3 bytes hole, try to pack */
int speed; /* 184 4 */
/* size: 192, cachelines: 3, members: 18 */
/* sum members: 161, holes: 7, sum holes: 27 */
/* padding: 4 */
};
After:
struct ocelot_port {
struct ocelot * ocelot; /* 0 8 */
struct regmap * target; /* 8 8 */
struct net_device * bond; /* 16 8 */
struct net_device * bridge; /* 24 8 */
const struct ocelot_bridge_vlan * pvid_vlan; /* 32 8 */
phy_interface_t phy_mode; /* 40 4 */
unsigned int ptp_skbs_in_flight; /* 44 4 */
struct sk_buff_head tx_skbs; /* 48 96 */
/* --- cacheline 2 boundary (128 bytes) was 16 bytes ago --- */
u16 mrp_ring_id; /* 144 2 */
u8 ptp_cmd; /* 146 1 */
u8 ts_id; /* 147 1 */
u8 stp_state; /* 148 1 */
bool vlan_aware; /* 149 1 */
bool is_dsa_8021q_cpu; /* 150 1 */
bool learn_ena; /* 151 1 */
bool lag_tx_active; /* 152 1 */
/* XXX 3 bytes hole, try to pack */
int bridge_num; /* 156 4 */
int speed; /* 160 4 */
/* size: 168, cachelines: 3, members: 18 */
/* sum members: 161, holes: 1, sum holes: 3 */
/* padding: 4 */
/* last cacheline: 40 bytes */
};
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/soc')
| -rw-r--r-- | include/soc/mscc/ocelot.h | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/include/soc/mscc/ocelot.h b/include/soc/mscc/ocelot.h index 919be1989c7c..904c15ca145e 100644 --- a/include/soc/mscc/ocelot.h +++ b/include/soc/mscc/ocelot.h @@ -659,28 +659,30 @@ struct ocelot_port { struct regmap *target; - bool vlan_aware; + struct net_device *bond; + struct net_device *bridge; + /* VLAN that untagged frames are classified to, on ingress */ const struct ocelot_bridge_vlan *pvid_vlan; + phy_interface_t phy_mode; + unsigned int ptp_skbs_in_flight; - u8 ptp_cmd; struct sk_buff_head tx_skbs; - u8 ts_id; - phy_interface_t phy_mode; + u16 mrp_ring_id; + u8 ptp_cmd; + u8 ts_id; + + u8 stp_state; + bool vlan_aware; bool is_dsa_8021q_cpu; bool learn_ena; - struct net_device *bond; bool lag_tx_active; - u16 mrp_ring_id; - - struct net_device *bridge; int bridge_num; - u8 stp_state; int speed; }; |