package/kernel/mac80211/patches/307-mac80211-Deinline-drv_sta_state.patch

   1 From: Denys Vlasenko <dvlasenk@redhat.com>
   2 Date: Wed, 15 Jul 2015 14:56:05 +0200
   3 Subject: [PATCH] mac80211: Deinline drv_sta_state
   4
   5 With this .config: http://busybox.net/~vda/kernel_config,
   6 after deinlining the function size is 3132 bytes and there are
   7 7 callsites.
   8
   9 Total size reduction: about 20 kbytes.
  10
  11 Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
  12 CC: John Linville <linville@tuxdriver.com>
  13 CC: Michal Kazior <michal.kazior@tieto.com>
  14 Cc: Johannes Berg <johannes.berg@intel.com>
  15 Cc: linux-wireless@vger.kernel.org
  16 Cc: netdev@vger.kernel.org
  17 CC: linux-kernel@vger.kernel.org
  18 ---
  19  create mode 100644 net/mac80211/driver-ops.c
  20
  21 --- a/net/mac80211/Makefile
  22 +++ b/net/mac80211/Makefile
  23 @@ -3,6 +3,7 @@ obj-$(CPTCFG_MAC80211) += mac80211.o
  24  # mac80211 objects
  25  mac80211-y := \
  26         main.o status.o \
  27 +       driver-ops.o \
  28         sta_info.o \
  29         wep.o \
  30         wpa.o \
  31 --- /dev/null
  32 +++ b/net/mac80211/driver-ops.c
  33 @@ -0,0 +1,41 @@
  34 +/*
  35 + * This program is free software; you can redistribute it and/or modify
  36 + * it under the terms of the GNU General Public License version 2 as
  37 + * published by the Free Software Foundation.
  38 + */
  39 +#include <net/mac80211.h>
  40 +#include "ieee80211_i.h"
  41 +#include "trace.h"
  42 +#include "driver-ops.h"
  43 +
  44 +__must_check
  45 +int drv_sta_state(struct ieee80211_local *local,
  46 +                 struct ieee80211_sub_if_data *sdata,
  47 +                 struct sta_info *sta,
  48 +                 enum ieee80211_sta_state old_state,
  49 +                 enum ieee80211_sta_state new_state)
  50 +{
  51 +       int ret = 0;
  52 +
  53 +       might_sleep();
  54 +
  55 +       sdata = get_bss_sdata(sdata);
  56 +       if (!check_sdata_in_driver(sdata))
  57 +               return -EIO;
  58 +
  59 +       trace_drv_sta_state(local, sdata, &sta->sta, old_state, new_state);
  60 +       if (local->ops->sta_state) {
  61 +               ret = local->ops->sta_state(&local->hw, &sdata->vif, &sta->sta,
  62 +                                           old_state, new_state);
  63 +       } else if (old_state == IEEE80211_STA_AUTH &&
  64 +                  new_state == IEEE80211_STA_ASSOC) {
  65 +               ret = drv_sta_add(local, sdata, &sta->sta);
  66 +               if (ret == 0)
  67 +                       sta->uploaded = true;
  68 +       } else if (old_state == IEEE80211_STA_ASSOC &&
  69 +                  new_state == IEEE80211_STA_AUTH) {
  70 +               drv_sta_remove(local, sdata, &sta->sta);
  71 +       }
  72 +       trace_drv_return_int(local, ret);
  73 +       return ret;
  74 +}
  75 --- a/net/mac80211/driver-ops.h
  76 +++ b/net/mac80211/driver-ops.h
  77 @@ -573,37 +573,12 @@ static inline void drv_sta_pre_rcu_remov
  78         trace_drv_return_void(local);
  79  }
  80
  81 -static inline __must_check
  82 +__must_check
  83  int drv_sta_state(struct ieee80211_local *local,
  84                   struct ieee80211_sub_if_data *sdata,
  85                   struct sta_info *sta,
  86                   enum ieee80211_sta_state old_state,
  87 -                 enum ieee80211_sta_state new_state)
  88 -{
  89 -       int ret = 0;
  90 -
  91 -       might_sleep();
  92 -
  93 -       sdata = get_bss_sdata(sdata);
  94 -       if (!check_sdata_in_driver(sdata))
  95 -               return -EIO;
  96 -
  97 -       trace_drv_sta_state(local, sdata, &sta->sta, old_state, new_state);
  98 -       if (local->ops->sta_state) {
  99 -               ret = local->ops->sta_state(&local->hw, &sdata->vif, &sta->sta,
 100 -                                           old_state, new_state);
 101 -       } else if (old_state == IEEE80211_STA_AUTH &&
 102 -                  new_state == IEEE80211_STA_ASSOC) {
 103 -               ret = drv_sta_add(local, sdata, &sta->sta);
 104 -               if (ret == 0)
 105 -                       sta->uploaded = true;
 106 -       } else if (old_state == IEEE80211_STA_ASSOC &&
 107 -                  new_state == IEEE80211_STA_AUTH) {
 108 -               drv_sta_remove(local, sdata, &sta->sta);
 109 -       }
 110 -       trace_drv_return_int(local, ret);
 111 -       return ret;
 112 -}
 113 +                 enum ieee80211_sta_state new_state);
 114
 115  static inline void drv_sta_rc_update(struct ieee80211_local *local,
 116                                      struct ieee80211_sub_if_data *sdata,