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batman-adv: Deinline batadv_orig_hash_find, save 7339 bytes 

This function compiles to 288 bytes of machine code for Linux 4.14 on
Debian Stretch amd64 and (6.3.0-18) with the default configuration. 27
callsites (25 used in default config).

   text    data     bss     dec     hex filename
 179291   10317    4416  194024   2f5e8 batman-adv.ko.pre
 171952   10317    4416  186685   2d93d batman-adv.ko.post

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
[sven@narfation.org: Fix includes, correct sizes+counts in commit message]
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
This commit is contained in:
Denys Vlasenko 2017-11-19 17:59:13 +01:00 committed by Simon Wunderlich
parent 02dd9a8afa
commit 3326afe6ba
2 changed files with 34 additions and 35 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
net/batman-adv/originator.c
View File

@ -30,10 +30,12 @@
#include <linux/netdevice.h>
#include <linux/netlink.h>
#include <linux/rculist.h>
#include <linux/rcupdate.h>
#include <linux/seq_file.h>
#include <linux/skbuff.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/stddef.h>
#include <linux/workqueue.h>
#include <net/sock.h>
#include <uapi/linux/batman_adv.h>
@ -55,6 +57,36 @@
/* hash class keys */
static struct lock_class_key batadv_orig_hash_lock_class_key;
struct batadv_orig_node *
batadv_orig_hash_find(struct batadv_priv *bat_priv, const void *data)
{
struct batadv_hashtable *hash = bat_priv->orig_hash;
struct hlist_head *head;
struct batadv_orig_node *orig_node, *orig_node_tmp = NULL;
int index;
if (!hash)
return NULL;
index = batadv_choose_orig(data, hash->size);
head = &hash->table[index];
rcu_read_lock();
hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
if (!batadv_compare_eth(orig_node, data))
continue;
if (!kref_get_unless_zero(&orig_node->refcount))
continue;
orig_node_tmp = orig_node;
break;
}
rcu_read_unlock();
return orig_node_tmp;
}
static void batadv_purge_orig(struct work_struct *work);
/**

37
net/batman-adv/originator.h
View File

@ -23,14 +23,8 @@
#include <linux/compiler.h>
#include <linux/if_ether.h>
#include <linux/jhash.h>
#include <linux/kref.h>
#include <linux/rculist.h>
#include <linux/rcupdate.h>
#include <linux/stddef.h>
#include <linux/types.h>
#include "hash.h"
struct netlink_callback;
struct seq_file;
struct sk_buff;
@ -100,34 +94,7 @@ static inline u32 batadv_choose_orig(const void *data, u32 size)
return hash % size;
}
static inline struct batadv_orig_node *
batadv_orig_hash_find(struct batadv_priv *bat_priv, const void *data)
{
struct batadv_hashtable *hash = bat_priv->orig_hash;
struct hlist_head *head;
struct batadv_orig_node *orig_node, *orig_node_tmp = NULL;
int index;
if (!hash)
return NULL;
index = batadv_choose_orig(data, hash->size);
head = &hash->table[index];
rcu_read_lock();
hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
if (!batadv_compare_eth(orig_node, data))
continue;
if (!kref_get_unless_zero(&orig_node->refcount))
continue;
orig_node_tmp = orig_node;
break;
}
rcu_read_unlock();
return orig_node_tmp;
}
struct batadv_orig_node *
batadv_orig_hash_find(struct batadv_priv *bat_priv, const void *data);
#endif /* _NET_BATMAN_ADV_ORIGINATOR_H_ */