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authorSasha Levin <sasha.levin@oracle.com>2013-02-27 17:06:00 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-02-27 19:10:24 -0800
commitb67bfe0d42cac56c512dd5da4b1b347a23f4b70a (patch)
tree3d465aea12b97683f26ffa38eba8744469de9997 /net/iucv
parent1e142b29e210b5dfb2deeb6ce2210b60af16d2a6 (diff)
downloadop-kernel-dev-b67bfe0d42cac56c512dd5da4b1b347a23f4b70a.zip
op-kernel-dev-b67bfe0d42cac56c512dd5da4b1b347a23f4b70a.tar.gz
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>
Diffstat (limited to 'net/iucv')
-rw-r--r--net/iucv/af_iucv.c21
1 files changed, 7 insertions, 14 deletions
diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c
index cd6f7a9..a7d11ffe 100644
--- a/net/iucv/af_iucv.c
+++ b/net/iucv/af_iucv.c
@@ -156,14 +156,13 @@ static int afiucv_pm_freeze(struct device *dev)
{
struct iucv_sock *iucv;
struct sock *sk;
- struct hlist_node *node;
int err = 0;
#ifdef CONFIG_PM_DEBUG
printk(KERN_WARNING "afiucv_pm_freeze\n");
#endif
read_lock(&iucv_sk_list.lock);
- sk_for_each(sk, node, &iucv_sk_list.head) {
+ sk_for_each(sk, &iucv_sk_list.head) {
iucv = iucv_sk(sk);
switch (sk->sk_state) {
case IUCV_DISCONN:
@@ -194,13 +193,12 @@ static int afiucv_pm_freeze(struct device *dev)
static int afiucv_pm_restore_thaw(struct device *dev)
{
struct sock *sk;
- struct hlist_node *node;
#ifdef CONFIG_PM_DEBUG
printk(KERN_WARNING "afiucv_pm_restore_thaw\n");
#endif
read_lock(&iucv_sk_list.lock);
- sk_for_each(sk, node, &iucv_sk_list.head) {
+ sk_for_each(sk, &iucv_sk_list.head) {
switch (sk->sk_state) {
case IUCV_CONNECTED:
sk->sk_err = EPIPE;
@@ -390,9 +388,8 @@ static int afiucv_hs_send(struct iucv_message *imsg, struct sock *sock,
static struct sock *__iucv_get_sock_by_name(char *nm)
{
struct sock *sk;
- struct hlist_node *node;
- sk_for_each(sk, node, &iucv_sk_list.head)
+ sk_for_each(sk, &iucv_sk_list.head)
if (!memcmp(&iucv_sk(sk)->src_name, nm, 8))
return sk;
@@ -1678,7 +1675,6 @@ static int iucv_callback_connreq(struct iucv_path *path,
unsigned char user_data[16];
unsigned char nuser_data[16];
unsigned char src_name[8];
- struct hlist_node *node;
struct sock *sk, *nsk;
struct iucv_sock *iucv, *niucv;
int err;
@@ -1689,7 +1685,7 @@ static int iucv_callback_connreq(struct iucv_path *path,
read_lock(&iucv_sk_list.lock);
iucv = NULL;
sk = NULL;
- sk_for_each(sk, node, &iucv_sk_list.head)
+ sk_for_each(sk, &iucv_sk_list.head)
if (sk->sk_state == IUCV_LISTEN &&
!memcmp(&iucv_sk(sk)->src_name, src_name, 8)) {
/*
@@ -2115,7 +2111,6 @@ static int afiucv_hs_callback_rx(struct sock *sk, struct sk_buff *skb)
static int afiucv_hs_rcv(struct sk_buff *skb, struct net_device *dev,
struct packet_type *pt, struct net_device *orig_dev)
{
- struct hlist_node *node;
struct sock *sk;
struct iucv_sock *iucv;
struct af_iucv_trans_hdr *trans_hdr;
@@ -2132,7 +2127,7 @@ static int afiucv_hs_rcv(struct sk_buff *skb, struct net_device *dev,
iucv = NULL;
sk = NULL;
read_lock(&iucv_sk_list.lock);
- sk_for_each(sk, node, &iucv_sk_list.head) {
+ sk_for_each(sk, &iucv_sk_list.head) {
if (trans_hdr->flags == AF_IUCV_FLAG_SYN) {
if ((!memcmp(&iucv_sk(sk)->src_name,
trans_hdr->destAppName, 8)) &&
@@ -2225,10 +2220,9 @@ static void afiucv_hs_callback_txnotify(struct sk_buff *skb,
struct sk_buff *list_skb;
struct sk_buff *nskb;
unsigned long flags;
- struct hlist_node *node;
read_lock_irqsave(&iucv_sk_list.lock, flags);
- sk_for_each(sk, node, &iucv_sk_list.head)
+ sk_for_each(sk, &iucv_sk_list.head)
if (sk == isk) {
iucv = iucv_sk(sk);
break;
@@ -2299,14 +2293,13 @@ static int afiucv_netdev_event(struct notifier_block *this,
unsigned long event, void *ptr)
{
struct net_device *event_dev = (struct net_device *)ptr;
- struct hlist_node *node;
struct sock *sk;
struct iucv_sock *iucv;
switch (event) {
case NETDEV_REBOOT:
case NETDEV_GOING_DOWN:
- sk_for_each(sk, node, &iucv_sk_list.head) {
+ sk_for_each(sk, &iucv_sk_list.head) {
iucv = iucv_sk(sk);
if ((iucv->hs_dev == event_dev) &&
(sk->sk_state == IUCV_CONNECTED)) {
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