diff options
author | Marc Yang <yangyang@marvell.com> | 2011-05-17 02:17:49 (GMT) |
---|---|---|
committer | John W. Linville <linville@tuxdriver.com> | 2011-05-19 17:53:55 (GMT) |
commit | f699254c7126d7df94491dfd4c3648f8ec0c0d51 (patch) | |
tree | 8df2829d738771c9915c728ac4a8e1b051fcd7c0 /drivers/net/wireless | |
parent | 7176ba23f8b589b1df3229574ff46fb904ce9ec5 (diff) | |
download | linux-fsl-qoriq-f699254c7126d7df94491dfd4c3648f8ec0c0d51.tar.xz |
mwifiex: reduce CPU usage by tracking tx_pkts_queued
This patch adds tx_pkts_queued to track number of packets being
enqueued & dequeued so that mwifiex_wmm_lists_empty() evaluation
is lightweight.
Signed-off-by: Marc Yang <yangyang@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless')
-rw-r--r-- | drivers/net/wireless/mwifiex/11n_aggr.c | 4 | ||||
-rw-r--r-- | drivers/net/wireless/mwifiex/main.h | 3 | ||||
-rw-r--r-- | drivers/net/wireless/mwifiex/wmm.c | 22 |
3 files changed, 19 insertions, 10 deletions
diff --git a/drivers/net/wireless/mwifiex/11n_aggr.c b/drivers/net/wireless/mwifiex/11n_aggr.c index d3d5e08..f807447 100644 --- a/drivers/net/wireless/mwifiex/11n_aggr.c +++ b/drivers/net/wireless/mwifiex/11n_aggr.c @@ -196,6 +196,8 @@ mwifiex_11n_aggregate_pkt(struct mwifiex_private *priv, if (skb_src) pra_list->total_pkts_size -= skb_src->len; + atomic_dec(&priv->wmm.tx_pkts_queued); + spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, ra_list_flags); mwifiex_11n_form_amsdu_pkt(skb_aggr, skb_src, &pad); @@ -257,6 +259,8 @@ mwifiex_11n_aggregate_pkt(struct mwifiex_private *priv, pra_list->total_pkts_size += skb_aggr->len; + atomic_inc(&priv->wmm.tx_pkts_queued); + tx_info_aggr->flags |= MWIFIEX_BUF_FLAG_REQUEUED_PKT; spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, ra_list_flags); diff --git a/drivers/net/wireless/mwifiex/main.h b/drivers/net/wireless/mwifiex/main.h index 672701d..537b40d 100644 --- a/drivers/net/wireless/mwifiex/main.h +++ b/drivers/net/wireless/mwifiex/main.h @@ -213,7 +213,8 @@ struct mwifiex_wmm_desc { u32 drv_pkt_delay_max; u8 queue_priority[IEEE80211_MAX_QUEUES]; u32 user_pri_pkt_tx_ctrl[WMM_HIGHEST_PRIORITY + 1]; /* UP: 0 to 7 */ - + /* Number of transmit packets queued */ + atomic_t tx_pkts_queued; }; struct mwifiex_802_11_security { diff --git a/drivers/net/wireless/mwifiex/wmm.c b/drivers/net/wireless/mwifiex/wmm.c index faa09e3..52d2185 100644 --- a/drivers/net/wireless/mwifiex/wmm.c +++ b/drivers/net/wireless/mwifiex/wmm.c @@ -399,6 +399,8 @@ mwifiex_wmm_init(struct mwifiex_adapter *adapter) priv->add_ba_param.timeout = MWIFIEX_DEFAULT_BLOCK_ACK_TIMEOUT; priv->add_ba_param.tx_win_size = MWIFIEX_AMPDU_DEF_TXWINSIZE; priv->add_ba_param.rx_win_size = MWIFIEX_AMPDU_DEF_RXWINSIZE; + + atomic_set(&priv->wmm.tx_pkts_queued, 0); } } @@ -408,17 +410,13 @@ mwifiex_wmm_init(struct mwifiex_adapter *adapter) int mwifiex_wmm_lists_empty(struct mwifiex_adapter *adapter) { - int i, j; + int i; struct mwifiex_private *priv; - for (j = 0; j < adapter->priv_num; ++j) { - priv = adapter->priv[j]; - if (priv) { - for (i = 0; i < MAX_NUM_TID; i++) - if (!mwifiex_wmm_is_ra_list_empty( - &priv->wmm.tid_tbl_ptr[i].ra_list)) - return false; - } + for (i = 0; i < adapter->priv_num; ++i) { + priv = adapter->priv[i]; + if (priv && atomic_read(&priv->wmm.tx_pkts_queued)) + return false; } return true; @@ -468,6 +466,8 @@ static void mwifiex_wmm_cleanup_queues(struct mwifiex_private *priv) for (i = 0; i < MAX_NUM_TID; i++) mwifiex_wmm_del_pkts_in_ralist(priv, &priv->wmm.tid_tbl_ptr[i]. ra_list); + + atomic_set(&priv->wmm.tx_pkts_queued, 0); } /* @@ -638,6 +638,8 @@ mwifiex_wmm_add_buf_txqueue(struct mwifiex_adapter *adapter, ra_list->total_pkts_size += skb->len; + atomic_inc(&priv->wmm.tx_pkts_queued); + spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags); } @@ -1028,6 +1030,7 @@ mwifiex_send_single_packet(struct mwifiex_private *priv, .bss_prio_cur->list, struct mwifiex_bss_prio_node, list); + atomic_dec(&priv->wmm.tx_pkts_queued); spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, ra_list_flags); } @@ -1134,6 +1137,7 @@ mwifiex_send_processed_packet(struct mwifiex_private *priv, .bss_prio_cur->list, struct mwifiex_bss_prio_node, list); + atomic_dec(&priv->wmm.tx_pkts_queued); spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, ra_list_flags); } |