From: Johannes Berg <johannes.berg@intel.com>
Date: Mon, 20 Jan 2014 23:32:52 +0000 (+0100)
Subject: mac80211: minstrel_ht: sample_table can be __read_mostly
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=f6e1a73b66bdf41765e762eda0f4ecb7d987ea57;p=deliverable%2Flinux.git

mac80211: minstrel_ht: sample_table can be __read_mostly

The sample table is initialized only once at module start, so
is really __read_mostly. Additionally, the code to init it can
be marked __init since it will never be needed again, it is
likely automatically inlined into the __init function already
by the compiler, so this doesn't really make a difference.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---

diff --git a/net/mac80211/rc80211_minstrel_ht.c b/net/mac80211/rc80211_minstrel_ht.c
index a6d6cc5c3db4..bccaf854a309 100644
--- a/net/mac80211/rc80211_minstrel_ht.c
+++ b/net/mac80211/rc80211_minstrel_ht.c
@@ -124,7 +124,7 @@ const struct mcs_group minstrel_mcs_groups[] = {
 
 #define MINSTREL_CCK_GROUP	(ARRAY_SIZE(minstrel_mcs_groups) - 1)
 
-static u8 sample_table[SAMPLE_COLUMNS][MCS_GROUP_RATES];
+static u8 sample_table[SAMPLE_COLUMNS][MCS_GROUP_RATES] __read_mostly;
 
 static void
 minstrel_ht_update_rates(struct minstrel_priv *mp, struct minstrel_ht_sta *mi);
@@ -1048,8 +1048,7 @@ static const struct rate_control_ops mac80211_minstrel_ht = {
 };
 
 
-static void
-init_sample_table(void)
+static void __init init_sample_table(void)
 {
 	int col, i, new_idx;
 	u8 rnd[MCS_GROUP_RATES];