From: Antonio Quartulli <antonio@meshcoding.com>
To: b.a.t.m.a.n@lists.open-mesh.org
Cc: Antonio Quartulli <antonio@meshcoding.com>
Subject: [B.A.T.M.A.N.] [PATCH] batman-adv: prefer kmalloc_array to kmalloc when possible
Date: Sat, 24 May 2014 06:43:47 +0200 [thread overview]
Message-ID: <1400906627-18725-1-git-send-email-antonio@meshcoding.com> (raw)
Reported by checkpatch with the following warning:
WARNING: Prefer kmalloc_array over kmalloc with multiply
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
---
bat_iv_ogm.c | 13 +++++++------
distributed-arp-table.c | 3 ++-
hash.c | 6 +++---
3 files changed, 12 insertions(+), 10 deletions(-)
diff --git a/bat_iv_ogm.c b/bat_iv_ogm.c
index f04224c..1e80539 100644
--- a/bat_iv_ogm.c
+++ b/bat_iv_ogm.c
@@ -108,14 +108,15 @@ static int batadv_iv_ogm_orig_add_if(struct batadv_orig_node *orig_node,
int max_if_num)
{
void *data_ptr;
- size_t data_size, old_size;
+ size_t old_size;
int ret = -ENOMEM;
spin_lock_bh(&orig_node->bat_iv.ogm_cnt_lock);
- data_size = max_if_num * sizeof(unsigned long) * BATADV_NUM_WORDS;
old_size = (max_if_num - 1) * sizeof(unsigned long) * BATADV_NUM_WORDS;
- data_ptr = kmalloc(data_size, GFP_ATOMIC);
+ data_ptr = kmalloc_array(max_if_num,
+ BATADV_NUM_WORDS * sizeof(unsigned long),
+ GFP_ATOMIC);
if (!data_ptr)
goto unlock;
@@ -123,7 +124,7 @@ static int batadv_iv_ogm_orig_add_if(struct batadv_orig_node *orig_node,
kfree(orig_node->bat_iv.bcast_own);
orig_node->bat_iv.bcast_own = data_ptr;
- data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC);
+ data_ptr = kmalloc_array(max_if_num, sizeof(uint8_t), GFP_ATOMIC);
if (!data_ptr) {
kfree(orig_node->bat_iv.bcast_own);
goto unlock;
@@ -164,7 +165,7 @@ static int batadv_iv_ogm_orig_del_if(struct batadv_orig_node *orig_node,
goto free_bcast_own;
chunk_size = sizeof(unsigned long) * BATADV_NUM_WORDS;
- data_ptr = kmalloc(max_if_num * chunk_size, GFP_ATOMIC);
+ data_ptr = kmalloc_array(max_if_num, chunk_size, GFP_ATOMIC);
if (!data_ptr)
goto unlock;
@@ -183,7 +184,7 @@ free_bcast_own:
if (max_if_num == 0)
goto free_own_sum;
- data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC);
+ data_ptr = kmalloc_array(max_if_num, sizeof(uint8_t), GFP_ATOMIC);
if (!data_ptr) {
kfree(orig_node->bat_iv.bcast_own);
goto unlock;
diff --git a/distributed-arp-table.c b/distributed-arp-table.c
index dcd99b2..b7406e0 100644
--- a/distributed-arp-table.c
+++ b/distributed-arp-table.c
@@ -537,7 +537,8 @@ batadv_dat_select_candidates(struct batadv_priv *bat_priv, __be32 ip_dst)
if (!bat_priv->orig_hash)
return NULL;
- res = kmalloc(BATADV_DAT_CANDIDATES_NUM * sizeof(*res), GFP_ATOMIC);
+ res = kmalloc_array(BATADV_DAT_CANDIDATES_NUM, sizeof(*res),
+ GFP_ATOMIC);
if (!res)
return NULL;
diff --git a/hash.c b/hash.c
index 63bdf7e..7c1c630 100644
--- a/hash.c
+++ b/hash.c
@@ -46,12 +46,12 @@ struct batadv_hashtable *batadv_hash_new(uint32_t size)
if (!hash)
return NULL;
- hash->table = kmalloc(sizeof(*hash->table) * size, GFP_ATOMIC);
+ hash->table = kmalloc_array(size, sizeof(*hash->table), GFP_ATOMIC);
if (!hash->table)
goto free_hash;
- hash->list_locks = kmalloc(sizeof(*hash->list_locks) * size,
- GFP_ATOMIC);
+ hash->list_locks = kmalloc_array(size, sizeof(*hash->list_locks),
+ GFP_ATOMIC);
if (!hash->list_locks)
goto free_table;
--
1.8.5.5
next reply other threads:[~2014-05-24 4:43 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-24 4:43 Antonio Quartulli [this message]
2014-06-10 14:27 ` [B.A.T.M.A.N.] [PATCH] batman-adv: prefer kmalloc_array to kmalloc when possible Marek Lindner
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1400906627-18725-1-git-send-email-antonio@meshcoding.com \
--to=antonio@meshcoding.com \
--cc=b.a.t.m.a.n@lists.open-mesh.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).