hlist: drop the node parameter from iterators
I'm not sure why, but the hlist for each entry iterators were conceived
list_for_each_entry(pos, head, member)
The hlist ones were greedy and wanted an extra parameter:
hlist_for_each_entry(tpos, pos, head, member)
Why did they need an extra pos parameter? I'm not quite sure. Not only
they don't really need it, it also prevents the iterator from looking
exactly like the list iterator, which is unfortunate.
Besides the semantic patch, there was some manual work required:
- Fix up the actual hlist iterators in linux/list.h
- Fix up the declaration of other iterators based on the hlist ones.
- A very small amount of places were using the 'node' parameter, this
was modified to use 'obj->member' instead.
- Coccinelle didn't handle the hlist_for_each_entry_safe iterator
properly, so those had to be fixed up manually.
The semantic patch which is mostly the work of Peter Senna Tschudin is here:
@@
iterator name hlist_for_each_entry, hlist_for_each_entry_continue, hlist_for_each_entry_from, hlist_for_each_entry_rcu, hlist_for_each_entry_rcu_bh, hlist_for_each_entry_continue_rcu_bh, for_each_busy_worker, ax25_uid_for_each, ax25_for_each, inet_bind_bucket_for_each, sctp_for_each_hentry, sk_for_each, sk_for_each_rcu, sk_for_each_from, sk_for_each_safe, sk_for_each_bound, hlist_for_each_entry_safe, hlist_for_each_entry_continue_rcu, nr_neigh_for_each, nr_neigh_for_each_safe, nr_node_for_each, nr_node_for_each_safe, for_each_gfn_indirect_valid_sp, for_each_gfn_sp, for_each_host;
type T;
expression a,c,d,e;
identifier b;
statement S;
@@
-T b;
<+... when != b
(
hlist_for_each_entry(a,
- b,
c, d) S
|
hlist_for_each_entry_continue(a,
- b,
c) S
|
hlist_for_each_entry_from(a,
- b,
c) S
|
hlist_for_each_entry_rcu(a,
- b,
c, d) S
|
hlist_for_each_entry_rcu_bh(a,
- b,
c, d) S
|
hlist_for_each_entry_continue_rcu_bh(a,
- b,
c) S
|
for_each_busy_worker(a, c,
- b,
d) S
|
ax25_uid_for_each(a,
- b,
c) S
|
ax25_for_each(a,
- b,
c) S
|
inet_bind_bucket_for_each(a,
- b,
c) S
|
sctp_for_each_hentry(a,
- b,
c) S
|
sk_for_each(a,
- b,
c) S
|
sk_for_each_rcu(a,
- b,
c) S
|
sk_for_each_from
-(a, b)
+(a)
S
+ sk_for_each_from(a) S
|
sk_for_each_safe(a,
- b,
c, d) S
|
sk_for_each_bound(a,
- b,
c) S
|
hlist_for_each_entry_safe(a,
- b,
c, d, e) S
|
hlist_for_each_entry_continue_rcu(a,
- b,
c) S
|
nr_neigh_for_each(a,
- b,
c) S
|
nr_neigh_for_each_safe(a,
- b,
c, d) S
|
nr_node_for_each(a,
- b,
c) S
|
nr_node_for_each_safe(a,
- b,
c, d) S
|
- for_each_gfn_sp(a, c, d, b) S
+ for_each_gfn_sp(a, c, d) S
|
- for_each_gfn_indirect_valid_sp(a, c, d, b) S
+ for_each_gfn_indirect_valid_sp(a, c, d) S
|
for_each_host(a,
- b,
c) S
|
for_each_host_safe(a,
- b,
c, d) S
|
for_each_mesh_entry(a,
- b,
c, d) S
)
...+>
[akpm@linux-foundation.org: drop bogus change from net/ipv4/raw.c]
[akpm@linux-foundation.org: drop bogus hunk from net/ipv6/raw.c]
[akpm@linux-foundation.org: checkpatch fixes]
[akpm@linux-foundation.org: fix warnings]
[akpm@linux-foudnation.org: redo intrusive kvm changes]
Tested-by: Peter Senna Tschudin <peter.senna@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
index f4d2e9e..c3f1afd 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
@@ -2197,13 +2197,13 @@
union ixgbe_atr_input *mask = &adapter->fdir_mask;
struct ethtool_rx_flow_spec *fsp =
(struct ethtool_rx_flow_spec *)&cmd->fs;
- struct hlist_node *node, *node2;
+ struct hlist_node *node2;
struct ixgbe_fdir_filter *rule = NULL;
/* report total rule count */
cmd->data = (1024 << adapter->fdir_pballoc) - 2;
- hlist_for_each_entry_safe(rule, node, node2,
+ hlist_for_each_entry_safe(rule, node2,
&adapter->fdir_filter_list, fdir_node) {
if (fsp->location <= rule->sw_idx)
break;
@@ -2264,14 +2264,14 @@
struct ethtool_rxnfc *cmd,
u32 *rule_locs)
{
- struct hlist_node *node, *node2;
+ struct hlist_node *node2;
struct ixgbe_fdir_filter *rule;
int cnt = 0;
/* report total rule count */
cmd->data = (1024 << adapter->fdir_pballoc) - 2;
- hlist_for_each_entry_safe(rule, node, node2,
+ hlist_for_each_entry_safe(rule, node2,
&adapter->fdir_filter_list, fdir_node) {
if (cnt == cmd->rule_cnt)
return -EMSGSIZE;
@@ -2358,19 +2358,19 @@
u16 sw_idx)
{
struct ixgbe_hw *hw = &adapter->hw;
- struct hlist_node *node, *node2, *parent;
- struct ixgbe_fdir_filter *rule;
+ struct hlist_node *node2;
+ struct ixgbe_fdir_filter *rule, *parent;
int err = -EINVAL;
parent = NULL;
rule = NULL;
- hlist_for_each_entry_safe(rule, node, node2,
+ hlist_for_each_entry_safe(rule, node2,
&adapter->fdir_filter_list, fdir_node) {
/* hash found, or no matching entry */
if (rule->sw_idx >= sw_idx)
break;
- parent = node;
+ parent = rule;
}
/* if there is an old rule occupying our place remove it */
@@ -2399,7 +2399,7 @@
/* add filter to the list */
if (parent)
- hlist_add_after(parent, &input->fdir_node);
+ hlist_add_after(&parent->fdir_node, &input->fdir_node);
else
hlist_add_head(&input->fdir_node,
&adapter->fdir_filter_list);
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index 68478d6..db5611a 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -3891,7 +3891,7 @@
static void ixgbe_fdir_filter_restore(struct ixgbe_adapter *adapter)
{
struct ixgbe_hw *hw = &adapter->hw;
- struct hlist_node *node, *node2;
+ struct hlist_node *node2;
struct ixgbe_fdir_filter *filter;
spin_lock(&adapter->fdir_perfect_lock);
@@ -3899,7 +3899,7 @@
if (!hlist_empty(&adapter->fdir_filter_list))
ixgbe_fdir_set_input_mask_82599(hw, &adapter->fdir_mask);
- hlist_for_each_entry_safe(filter, node, node2,
+ hlist_for_each_entry_safe(filter, node2,
&adapter->fdir_filter_list, fdir_node) {
ixgbe_fdir_write_perfect_filter_82599(hw,
&filter->filter,
@@ -4356,12 +4356,12 @@
static void ixgbe_fdir_filter_exit(struct ixgbe_adapter *adapter)
{
- struct hlist_node *node, *node2;
+ struct hlist_node *node2;
struct ixgbe_fdir_filter *filter;
spin_lock(&adapter->fdir_perfect_lock);
- hlist_for_each_entry_safe(filter, node, node2,
+ hlist_for_each_entry_safe(filter, node2,
&adapter->fdir_filter_list, fdir_node) {
hlist_del(&filter->fdir_node);
kfree(filter);
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
index 5385474..bb4d8d9 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
@@ -225,11 +225,10 @@
mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
__be16 src_port, __be16 dst_port)
{
- struct hlist_node *elem;
struct mlx4_en_filter *filter;
struct mlx4_en_filter *ret = NULL;
- hlist_for_each_entry(filter, elem,
+ hlist_for_each_entry(filter,
filter_hash_bucket(priv, src_ip, dst_ip,
src_port, dst_port),
filter_chain) {
@@ -574,13 +573,13 @@
if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
struct mlx4_mac_entry *entry;
- struct hlist_node *n, *tmp;
+ struct hlist_node *tmp;
struct hlist_head *bucket;
unsigned int mac_hash;
mac_hash = priv->dev->dev_addr[MLX4_EN_MAC_HASH_IDX];
bucket = &priv->mac_hash[mac_hash];
- hlist_for_each_entry_safe(entry, n, tmp, bucket, hlist) {
+ hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
if (ether_addr_equal_64bits(entry->mac,
priv->dev->dev_addr)) {
en_dbg(DRV, priv, "Releasing qp: port %d, MAC %pM, qpn %d\n",
@@ -609,11 +608,11 @@
struct hlist_head *bucket;
unsigned int mac_hash;
struct mlx4_mac_entry *entry;
- struct hlist_node *n, *tmp;
+ struct hlist_node *tmp;
u64 prev_mac_u64 = mlx4_en_mac_to_u64(prev_mac);
bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
- hlist_for_each_entry_safe(entry, n, tmp, bucket, hlist) {
+ hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
mlx4_en_uc_steer_release(priv, entry->mac,
qpn, entry->reg_id);
@@ -1019,7 +1018,7 @@
{
struct netdev_hw_addr *ha;
struct mlx4_mac_entry *entry;
- struct hlist_node *n, *tmp;
+ struct hlist_node *tmp;
bool found;
u64 mac;
int err = 0;
@@ -1035,7 +1034,7 @@
/* find what to remove */
for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
bucket = &priv->mac_hash[i];
- hlist_for_each_entry_safe(entry, n, tmp, bucket, hlist) {
+ hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
found = false;
netdev_for_each_uc_addr(ha, dev) {
if (ether_addr_equal_64bits(entry->mac,
@@ -1078,7 +1077,7 @@
netdev_for_each_uc_addr(ha, dev) {
found = false;
bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
- hlist_for_each_entry(entry, n, bucket, hlist) {
+ hlist_for_each_entry(entry, bucket, hlist) {
if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
found = true;
break;
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
index ce38654..c7f8563 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
@@ -35,6 +35,7 @@
#include <linux/slab.h>
#include <linux/mlx4/qp.h>
#include <linux/skbuff.h>
+#include <linux/rculist.h>
#include <linux/if_ether.h>
#include <linux/if_vlan.h>
#include <linux/vmalloc.h>
@@ -617,7 +618,6 @@
if (is_multicast_ether_addr(ethh->h_dest)) {
struct mlx4_mac_entry *entry;
- struct hlist_node *n;
struct hlist_head *bucket;
unsigned int mac_hash;
@@ -625,7 +625,7 @@
mac_hash = ethh->h_source[MLX4_EN_MAC_HASH_IDX];
bucket = &priv->mac_hash[mac_hash];
rcu_read_lock();
- hlist_for_each_entry_rcu(entry, n, bucket, hlist) {
+ hlist_for_each_entry_rcu(entry, bucket, hlist) {
if (ether_addr_equal_64bits(entry->mac,
ethh->h_source)) {
rcu_read_unlock();
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.c
index 325e11e..f89cc7a 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.c
@@ -576,7 +576,7 @@
void qlcnic_prune_lb_filters(struct qlcnic_adapter *adapter)
{
struct qlcnic_filter *tmp_fil;
- struct hlist_node *tmp_hnode, *n;
+ struct hlist_node *n;
struct hlist_head *head;
int i;
unsigned long time;
@@ -584,7 +584,7 @@
for (i = 0; i < adapter->fhash.fbucket_size; i++) {
head = &(adapter->fhash.fhead[i]);
- hlist_for_each_entry_safe(tmp_fil, tmp_hnode, n, head, fnode) {
+ hlist_for_each_entry_safe(tmp_fil, n, head, fnode) {
cmd = tmp_fil->vlan_id ? QLCNIC_MAC_VLAN_DEL :
QLCNIC_MAC_DEL;
time = tmp_fil->ftime;
@@ -604,7 +604,7 @@
for (i = 0; i < adapter->rx_fhash.fbucket_size; i++) {
head = &(adapter->rx_fhash.fhead[i]);
- hlist_for_each_entry_safe(tmp_fil, tmp_hnode, n, head, fnode)
+ hlist_for_each_entry_safe(tmp_fil, n, head, fnode)
{
time = tmp_fil->ftime;
if (jiffies > (QLCNIC_FILTER_AGE * HZ + time)) {
@@ -621,14 +621,14 @@
void qlcnic_delete_lb_filters(struct qlcnic_adapter *adapter)
{
struct qlcnic_filter *tmp_fil;
- struct hlist_node *tmp_hnode, *n;
+ struct hlist_node *n;
struct hlist_head *head;
int i;
u8 cmd;
for (i = 0; i < adapter->fhash.fbucket_size; i++) {
head = &(adapter->fhash.fhead[i]);
- hlist_for_each_entry_safe(tmp_fil, tmp_hnode, n, head, fnode) {
+ hlist_for_each_entry_safe(tmp_fil, n, head, fnode) {
cmd = tmp_fil->vlan_id ? QLCNIC_MAC_VLAN_DEL :
QLCNIC_MAC_DEL;
qlcnic_sre_macaddr_change(adapter,
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c
index 6387e0c..0e63006 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c
@@ -162,7 +162,7 @@
{
struct ethhdr *phdr = (struct ethhdr *)(skb->data);
struct qlcnic_filter *fil, *tmp_fil;
- struct hlist_node *tmp_hnode, *n;
+ struct hlist_node *n;
struct hlist_head *head;
unsigned long time;
u64 src_addr = 0;
@@ -179,7 +179,7 @@
(adapter->fhash.fbucket_size - 1);
head = &(adapter->rx_fhash.fhead[hindex]);
- hlist_for_each_entry_safe(tmp_fil, tmp_hnode, n, head, fnode) {
+ hlist_for_each_entry_safe(tmp_fil, n, head, fnode) {
if (!memcmp(tmp_fil->faddr, &src_addr, ETH_ALEN) &&
tmp_fil->vlan_id == vlan_id) {
time = tmp_fil->ftime;
@@ -205,7 +205,7 @@
(adapter->fhash.fbucket_size - 1);
head = &(adapter->rx_fhash.fhead[hindex]);
spin_lock(&adapter->rx_mac_learn_lock);
- hlist_for_each_entry_safe(tmp_fil, tmp_hnode, n, head, fnode) {
+ hlist_for_each_entry_safe(tmp_fil, n, head, fnode) {
if (!memcmp(tmp_fil->faddr, &src_addr, ETH_ALEN) &&
tmp_fil->vlan_id == vlan_id) {
found = 1;
@@ -272,7 +272,7 @@
struct sk_buff *skb)
{
struct qlcnic_filter *fil, *tmp_fil;
- struct hlist_node *tmp_hnode, *n;
+ struct hlist_node *n;
struct hlist_head *head;
struct net_device *netdev = adapter->netdev;
struct ethhdr *phdr = (struct ethhdr *)(skb->data);
@@ -294,7 +294,7 @@
hindex = qlcnic_mac_hash(src_addr) & (adapter->fhash.fbucket_size - 1);
head = &(adapter->fhash.fhead[hindex]);
- hlist_for_each_entry_safe(tmp_fil, tmp_hnode, n, head, fnode) {
+ hlist_for_each_entry_safe(tmp_fil, n, head, fnode) {
if (!memcmp(tmp_fil->faddr, &src_addr, ETH_ALEN) &&
tmp_fil->vlan_id == vlan_id) {
if (jiffies > (QLCNIC_READD_AGE * HZ + tmp_fil->ftime))
diff --git a/drivers/net/ethernet/sun/sunvnet.c b/drivers/net/ethernet/sun/sunvnet.c
index 289b4ee..1df0ff3 100644
--- a/drivers/net/ethernet/sun/sunvnet.c
+++ b/drivers/net/ethernet/sun/sunvnet.c
@@ -614,10 +614,9 @@
{
unsigned int hash = vnet_hashfn(skb->data);
struct hlist_head *hp = &vp->port_hash[hash];
- struct hlist_node *n;
struct vnet_port *port;
- hlist_for_each_entry(port, n, hp, hash) {
+ hlist_for_each_entry(port, hp, hash) {
if (ether_addr_equal(port->raddr, skb->data))
return port;
}