From: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Switch the timer to HRTIMER_MODE_REL_SOFT, which executed the timer callback in
softirq context and remove the hrtimer_tasklet.
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: Anna-Maria Gleixner <anna-maria@xxxxxxxxxxxxx>
Reviewed-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
Cc: linux-wireless@xxxxxxxxxxxxxxx
Cc: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
Cc: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
---
drivers/net/wireless/mac80211_hwsim.c | 46 ++++++++++++---------------
1 file changed, 21 insertions(+), 25 deletions(-)
diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index 6359053bd0c78..f46999a9e8ca5 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -521,7 +521,7 @@ struct mac80211_hwsim_data {
unsigned int rx_filter;
bool started, idle, scanning;
struct mutex mutex;
- struct tasklet_hrtimer beacon_timer;
+ struct hrtimer beacon_timer;
enum ps_mode {
PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
} ps;
@@ -1458,7 +1458,7 @@ static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
{
struct mac80211_hwsim_data *data = hw->priv;
data->started = false;
- tasklet_hrtimer_cancel(&data->beacon_timer);
+ hrtimer_cancel(&data->beacon_timer);
wiphy_dbg(hw->wiphy, "%s\n", __func__);
}
@@ -1581,14 +1581,12 @@ static enum hrtimer_restart
mac80211_hwsim_beacon(struct hrtimer *timer)
{
struct mac80211_hwsim_data *data =
- container_of(timer, struct mac80211_hwsim_data,
- beacon_timer.timer);
+ container_of(timer, struct mac80211_hwsim_data, beacon_timer);
struct ieee80211_hw *hw = data->hw;
u64 bcn_int = data->beacon_int;
- ktime_t next_bcn;
if (!data->started)
- goto out;
+ return HRTIMER_NORESTART;
ieee80211_iterate_active_interfaces_atomic(
hw, IEEE80211_IFACE_ITER_NORMAL,
@@ -1599,12 +1597,9 @@ mac80211_hwsim_beacon(struct hrtimer *timer)
bcn_int -= data->bcn_delta;
data->bcn_delta = 0;
}
-
- next_bcn = ktime_add(hrtimer_get_expires(timer),
- ns_to_ktime(bcn_int * 1000));
- tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
-out:
- return HRTIMER_NORESTART;
+ hrtimer_forward(&data->beacon_timer, hrtimer_get_expires(timer),
+ ns_to_ktime(bcn_int * NSEC_PER_USEC));
+ return HRTIMER_RESTART;
}
static const char * const hwsim_chanwidths[] = {
@@ -1678,15 +1673,15 @@ static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
mutex_unlock(&data->mutex);
if (!data->started || !data->beacon_int)
- tasklet_hrtimer_cancel(&data->beacon_timer);
- else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
+ hrtimer_cancel(&data->beacon_timer);
+ else if (!hrtimer_is_queued(&data->beacon_timer)) {
u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
u32 bcn_int = data->beacon_int;
u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
- tasklet_hrtimer_start(&data->beacon_timer,
- ns_to_ktime(until_tbtt * 1000),
- HRTIMER_MODE_REL);
+ hrtimer_start(&data->beacon_timer,
+ ns_to_ktime(until_tbtt * NSEC_PER_USEC),
+ HRTIMER_MODE_REL_SOFT);
}
return 0;
@@ -1749,7 +1744,7 @@ static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
info->enable_beacon, info->beacon_int);
vp->bcn_en = info->enable_beacon;
if (data->started &&
- !hrtimer_is_queued(&data->beacon_timer.timer) &&
+ !hrtimer_is_queued(&data->beacon_timer) &&
info->enable_beacon) {
u64 tsf, until_tbtt;
u32 bcn_int;
@@ -1757,9 +1752,10 @@ static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
tsf = mac80211_hwsim_get_tsf(hw, vif);
bcn_int = data->beacon_int;
until_tbtt = bcn_int - do_div(tsf, bcn_int);
- tasklet_hrtimer_start(&data->beacon_timer,
- ns_to_ktime(until_tbtt * 1000),
- HRTIMER_MODE_REL);
+
+ hrtimer_start(&data->beacon_timer,
+ ns_to_ktime(until_tbtt * NSEC_PER_USEC),
+ HRTIMER_MODE_REL_SOFT);
} else if (!info->enable_beacon) {
unsigned int count = 0;
ieee80211_iterate_active_interfaces_atomic(
@@ -1768,7 +1764,7 @@ static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
wiphy_dbg(hw->wiphy, " beaconing vifs remaining: %u",
count);
if (count == 0) {
- tasklet_hrtimer_cancel(&data->beacon_timer);
+ hrtimer_cancel(&data->beacon_timer);
data->beacon_int = 0;
}
}
@@ -2919,9 +2915,9 @@ static int mac80211_hwsim_new_radio(struct genl_info *info,
wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
- tasklet_hrtimer_init(&data->beacon_timer,
- mac80211_hwsim_beacon,
- CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
+ hrtimer_init(&data->beacon_timer, CLOCK_MONOTONIC,
+ HRTIMER_MODE_ABS_SOFT);
+ data->beacon_timer.function = mac80211_hwsim_beacon;
err = ieee80211_register_hw(hw);
if (err < 0) {
--
2.20.1
