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authorDenys Vlasenko <dvlasenk@redhat.com>2017-11-19 19:59:13 +0300
committerSimon Wunderlich <sw@simonwunderlich.de>2017-12-04 15:16:00 +0300
commit3326afe6bac383a354c947d878e3916a74bbd59a (patch)
tree8e868e6e040f5dc39b9f6d4e129843fa4b79cfa3 /net/batman-adv/originator.c
parent02dd9a8afab42d63ca89a0e7dc8c45c5bebeb710 (diff)
downloadlinux-3326afe6bac383a354c947d878e3916a74bbd59a.tar.xz
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>
Diffstat (limited to 'net/batman-adv/originator.c')
-rw-r--r--net/batman-adv/originator.c32
1 files changed, 32 insertions, 0 deletions
diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
index 2967b86c13da..0a565d0422bb 100644
--- a/net/batman-adv/originator.c
+++ b/net/batman-adv/originator.c
@@ -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);
/**