From e905a9edab7f4f14f9213b52234e4a346c690911 Mon Sep 17 00:00:00 2001 From: YOSHIFUJI Hideaki Date: Fri, 9 Feb 2007 23:24:47 +0900 Subject: [NET] IPV4: Fix whitespace errors. Signed-off-by: YOSHIFUJI Hideaki Signed-off-by: David S. Miller --- net/ipv4/fib_trie.c | 98 ++++++++++++++++++++++++++--------------------------- 1 file changed, 49 insertions(+), 49 deletions(-) (limited to 'net/ipv4/fib_trie.c') diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c index 1e589b91605e..004a437bd7b5 100644 --- a/net/ipv4/fib_trie.c +++ b/net/ipv4/fib_trie.c @@ -7,13 +7,13 @@ * Robert Olsson Uppsala Universitet * & Swedish University of Agricultural Sciences. * - * Jens Laas Swedish University of + * Jens Laas Swedish University of * Agricultural Sciences. - * + * * Hans Liss Uppsala Universitet * * This work is based on the LPC-trie which is originally descibed in: - * + * * An experimental study of compression methods for dynamic tries * Stefan Nilsson and Matti Tikkanen. Algorithmica, 33(1):19-33, 2002. * http://www.nada.kth.se/~snilsson/public/papers/dyntrie2/ @@ -224,34 +224,34 @@ static inline int tkey_mismatch(t_key a, int offset, t_key b) } /* - To understand this stuff, an understanding of keys and all their bits is - necessary. Every node in the trie has a key associated with it, but not + To understand this stuff, an understanding of keys and all their bits is + necessary. Every node in the trie has a key associated with it, but not all of the bits in that key are significant. Consider a node 'n' and its parent 'tp'. - If n is a leaf, every bit in its key is significant. Its presence is - necessitated by path compression, since during a tree traversal (when - searching for a leaf - unless we are doing an insertion) we will completely - ignore all skipped bits we encounter. Thus we need to verify, at the end of - a potentially successful search, that we have indeed been walking the + If n is a leaf, every bit in its key is significant. Its presence is + necessitated by path compression, since during a tree traversal (when + searching for a leaf - unless we are doing an insertion) we will completely + ignore all skipped bits we encounter. Thus we need to verify, at the end of + a potentially successful search, that we have indeed been walking the correct key path. - Note that we can never "miss" the correct key in the tree if present by - following the wrong path. Path compression ensures that segments of the key - that are the same for all keys with a given prefix are skipped, but the - skipped part *is* identical for each node in the subtrie below the skipped - bit! trie_insert() in this implementation takes care of that - note the + Note that we can never "miss" the correct key in the tree if present by + following the wrong path. Path compression ensures that segments of the key + that are the same for all keys with a given prefix are skipped, but the + skipped part *is* identical for each node in the subtrie below the skipped + bit! trie_insert() in this implementation takes care of that - note the call to tkey_sub_equals() in trie_insert(). - if n is an internal node - a 'tnode' here, the various parts of its key + if n is an internal node - a 'tnode' here, the various parts of its key have many different meanings. - Example: + Example: _________________________________________________________________ | i | i | i | i | i | i | i | N | N | N | S | S | S | S | S | C | ----------------------------------------------------------------- - 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 + 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 _________________________________________________________________ | C | C | C | u | u | u | u | u | u | u | u | u | u | u | u | u | @@ -263,23 +263,23 @@ static inline int tkey_mismatch(t_key a, int offset, t_key b) n->pos = 15 n->bits = 4 - First, let's just ignore the bits that come before the parent tp, that is - the bits from 0 to (tp->pos-1). They are *known* but at this point we do + First, let's just ignore the bits that come before the parent tp, that is + the bits from 0 to (tp->pos-1). They are *known* but at this point we do not use them for anything. The bits from (tp->pos) to (tp->pos + tp->bits - 1) - "N", above - are the - index into the parent's child array. That is, they will be used to find + index into the parent's child array. That is, they will be used to find 'n' among tp's children. The bits from (tp->pos + tp->bits) to (n->pos - 1) - "S" - are skipped bits for the node n. - All the bits we have seen so far are significant to the node n. The rest + All the bits we have seen so far are significant to the node n. The rest of the bits are really not needed or indeed known in n->key. - The bits from (n->pos) to (n->pos + n->bits - 1) - "C" - are the index into + The bits from (n->pos) to (n->pos + n->bits - 1) - "C" - are the index into n's child array, and will of course be different for each child. - + The rest of the bits, from (n->pos + n->bits) onward, are completely unknown at this point. @@ -294,7 +294,7 @@ static inline void check_tnode(const struct tnode *tn) static int halve_threshold = 25; static int inflate_threshold = 50; static int halve_threshold_root = 15; -static int inflate_threshold_root = 25; +static int inflate_threshold_root = 25; static void __alias_free_mem(struct rcu_head *head) @@ -355,7 +355,7 @@ static inline void tnode_free(struct tnode *tn) struct leaf *l = (struct leaf *) tn; call_rcu_bh(&l->rcu, __leaf_free_rcu); } - else + else call_rcu(&tn->rcu, __tnode_free_rcu); } @@ -461,7 +461,7 @@ static struct node *resize(struct trie *t, struct tnode *tn) int inflate_threshold_use; int halve_threshold_use; - if (!tn) + if (!tn) return NULL; pr_debug("In tnode_resize %p inflate_threshold=%d threshold=%d\n", @@ -556,7 +556,7 @@ static struct node *resize(struct trie *t, struct tnode *tn) if(!tn->parent) inflate_threshold_use = inflate_threshold_root; - else + else inflate_threshold_use = inflate_threshold; err = 0; @@ -587,7 +587,7 @@ static struct node *resize(struct trie *t, struct tnode *tn) if(!tn->parent) halve_threshold_use = halve_threshold_root; - else + else halve_threshold_use = halve_threshold; err = 0; @@ -665,10 +665,10 @@ static struct tnode *inflate(struct trie *t, struct tnode *tn) right = tnode_new(inode->key|m, inode->pos + 1, inode->bits - 1); - if (!right) { + if (!right) { tnode_free(left); goto nomem; - } + } put_child(t, tn, 2*i, (struct node *) left); put_child(t, tn, 2*i+1, (struct node *) right); @@ -890,23 +890,23 @@ static inline struct list_head * get_fa_head(struct leaf *l, int plen) static void insert_leaf_info(struct hlist_head *head, struct leaf_info *new) { - struct leaf_info *li = NULL, *last = NULL; - struct hlist_node *node; + struct leaf_info *li = NULL, *last = NULL; + struct hlist_node *node; - if (hlist_empty(head)) { - hlist_add_head_rcu(&new->hlist, head); - } else { - hlist_for_each_entry(li, node, head, hlist) { - if (new->plen > li->plen) - break; + if (hlist_empty(head)) { + hlist_add_head_rcu(&new->hlist, head); + } else { + hlist_for_each_entry(li, node, head, hlist) { + if (new->plen > li->plen) + break; - last = li; - } - if (last) - hlist_add_after_rcu(&last->hlist, &new->hlist); - else - hlist_add_before_rcu(&new->hlist, &li->hlist); - } + last = li; + } + if (last) + hlist_add_after_rcu(&last->hlist, &new->hlist); + else + hlist_add_before_rcu(&new->hlist, &li->hlist); + } } /* rcu_read_lock needs to be hold by caller from readside */ @@ -1700,7 +1700,7 @@ static struct leaf *nextleaf(struct trie *t, struct leaf *thisleaf) /* Decend if tnode */ while (IS_TNODE(c)) { p = (struct tnode *) c; - idx = 0; + idx = 0; /* Rightmost non-NULL branch */ if (p && IS_TNODE(p)) @@ -2303,9 +2303,9 @@ static int fib_trie_seq_show(struct seq_file *seq, void *v) seq_indent(seq, iter->depth-1); seq_printf(seq, " +-- %d.%d.%d.%d/%d %d %d %d\n", - NIPQUAD(prf), tn->pos, tn->bits, tn->full_children, + NIPQUAD(prf), tn->pos, tn->bits, tn->full_children, tn->empty_children); - + } else { struct leaf *l = (struct leaf *) n; int i; -- cgit v1.2.2 From 9a32144e9d7b4e21341174b1a83b82a82353be86 Mon Sep 17 00:00:00 2001 From: Arjan van de Ven Date: Mon, 12 Feb 2007 00:55:35 -0800 Subject: [PATCH] mark struct file_operations const 7 Many struct file_operations in the kernel can be "const". Marking them const moves these to the .rodata section, which avoids false sharing with potential dirty data. In addition it'll catch accidental writes at compile time to these shared resources. Signed-off-by: Arjan van de Ven Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- net/ipv4/fib_trie.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'net/ipv4/fib_trie.c') diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c index 004a437bd7b5..c33dca073801 100644 --- a/net/ipv4/fib_trie.c +++ b/net/ipv4/fib_trie.c @@ -2173,7 +2173,7 @@ static int fib_triestat_seq_open(struct inode *inode, struct file *file) return single_open(file, fib_triestat_seq_show, NULL); } -static struct file_operations fib_triestat_fops = { +static const struct file_operations fib_triestat_fops = { .owner = THIS_MODULE, .open = fib_triestat_seq_open, .read = seq_read, @@ -2364,7 +2364,7 @@ out_kfree: goto out; } -static struct file_operations fib_trie_fops = { +static const struct file_operations fib_trie_fops = { .owner = THIS_MODULE, .open = fib_trie_seq_open, .read = seq_read, @@ -2485,7 +2485,7 @@ out_kfree: goto out; } -static struct file_operations fib_route_fops = { +static const struct file_operations fib_route_fops = { .owner = THIS_MODULE, .open = fib_route_seq_open, .read = seq_read, -- cgit v1.2.2