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| author | Johannes Berg <johannes.berg@intel.com> | 2010-08-12 14:49:58 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-08-24 22:27:54 +0200 |
| commit | 633adf1ad1c92c02bd3f10bbd73737a969179378 (patch) | |
| tree | 3f23d54719a1742d9326d61b6820147185cdb60c /net/wireless/util.c | |
| parent | drivers/net/wireless/libertas/cfg.c: needs sched.h (diff) | |
| download | linux-633adf1ad1c92c02bd3f10bbd73737a969179378.tar.xz linux-633adf1ad1c92c02bd3f10bbd73737a969179378.zip | |
cfg80211: mark ieee80211_hdrlen const
This function analyses only its single, value-passed
argument, and has no side effects. Thus it can be
const, which makes mac80211 smaller, for example:
text data bss dec hex filename
362518 16720 884 380122 5ccda mac80211.ko (before)
362358 16720 884 379962 5cc3a mac80211.ko (after)
a 160 byte saving in text size, and an optimisation
because the function won't be called as often.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/wireless/util.c')
| -rw-r--r-- | net/wireless/util.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/wireless/util.c b/net/wireless/util.c index 0c8a1e8b7690..1eb24162be61 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -221,7 +221,7 @@ const unsigned char bridge_tunnel_header[] __aligned(2) = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 }; EXPORT_SYMBOL(bridge_tunnel_header); -unsigned int ieee80211_hdrlen(__le16 fc) +unsigned int __attribute_const__ ieee80211_hdrlen(__le16 fc) { unsigned int hdrlen = 24; |