Messages in this thread Patch in this message | | | From | David Mosberger-Tang <> | Subject | [PATCH v2 11/50] wilc1000: convert tqx_entries from "int" to "atomic_t" | Date | Thu, 23 Dec 2021 01:14:06 +0000 (UTC) |
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This is in preparation of converting the tx queue to struct sk_buffs entries. atomic_t isn't necessary for the current code, but it is a safe change.
Signed-off-by: David Mosberger-Tang <davidm@egauge.net> --- drivers/net/wireless/microchip/wilc1000/netdev.c | 3 ++- drivers/net/wireless/microchip/wilc1000/netdev.h | 2 +- drivers/net/wireless/microchip/wilc1000/wlan.c | 12 ++++++------ 3 files changed, 9 insertions(+), 8 deletions(-)
diff --git a/drivers/net/wireless/microchip/wilc1000/netdev.c b/drivers/net/wireless/microchip/wilc1000/netdev.c index d5969f2e369c4..486091a4cb993 100644 --- a/drivers/net/wireless/microchip/wilc1000/netdev.c +++ b/drivers/net/wireless/microchip/wilc1000/netdev.c @@ -149,7 +149,8 @@ static int wilc_txq_task(void *vp) complete(&wl->txq_thread_started); while (1) { wait_event_interruptible(wl->txq_event, - (wl->txq_entries > 0 || wl->close)); + (atomic_read(&wl->txq_entries) > 0 || + wl->close)); if (wl->close) { complete(&wl->txq_thread_started); diff --git a/drivers/net/wireless/microchip/wilc1000/netdev.h b/drivers/net/wireless/microchip/wilc1000/netdev.h index d88fee8f9a6b0..60f4871a7d579 100644 --- a/drivers/net/wireless/microchip/wilc1000/netdev.h +++ b/drivers/net/wireless/microchip/wilc1000/netdev.h @@ -255,7 +255,7 @@ struct wilc { u8 *tx_buffer; struct txq_handle txq[NQUEUES]; - int txq_entries; + atomic_t txq_entries; struct txq_fw_recv_queue_stat fw[NQUEUES]; struct wilc_tx_queue_status tx_q_limit; diff --git a/drivers/net/wireless/microchip/wilc1000/wlan.c b/drivers/net/wireless/microchip/wilc1000/wlan.c index 781c40f2c930c..26b7d219ecbbb 100644 --- a/drivers/net/wireless/microchip/wilc1000/wlan.c +++ b/drivers/net/wireless/microchip/wilc1000/wlan.c @@ -41,7 +41,7 @@ static void wilc_wlan_txq_remove(struct wilc *wilc, u8 q_num, struct txq_entry_t *tqe) { list_del(&tqe->list); - wilc->txq_entries -= 1; + atomic_dec(&wilc->txq_entries); wilc->txq[q_num].count--; } @@ -57,7 +57,7 @@ wilc_wlan_txq_remove_from_head(struct wilc *wilc, u8 q_num) tqe = list_first_entry(&wilc->txq[q_num].txq_head.list, struct txq_entry_t, list); list_del(&tqe->list); - wilc->txq_entries -= 1; + atomic_dec(&wilc->txq_entries); wilc->txq[q_num].count--; } spin_unlock_irqrestore(&wilc->txq_spinlock, flags); @@ -87,7 +87,7 @@ static void wilc_wlan_txq_add_to_tail(struct net_device *dev, u8 type, u8 q_num, spin_lock_irqsave(&wilc->txq_spinlock, flags); list_add_tail(&tqe->list, &wilc->txq[q_num].txq_head.list); - wilc->txq_entries += 1; + atomic_inc(&wilc->txq_entries); wilc->txq[q_num].count++; spin_unlock_irqrestore(&wilc->txq_spinlock, flags); @@ -108,7 +108,7 @@ static void wilc_wlan_txq_add_to_head(struct wilc_vif *vif, u8 type, u8 q_num, spin_lock_irqsave(&wilc->txq_spinlock, flags); list_add(&tqe->list, &wilc->txq[q_num].txq_head.list); - wilc->txq_entries += 1; + atomic_inc(&wilc->txq_entries); wilc->txq[q_num].count++; spin_unlock_irqrestore(&wilc->txq_spinlock, flags); @@ -484,7 +484,7 @@ int wilc_wlan_txq_add_net_pkt(struct net_device *dev, kfree(tqe); } - return wilc->txq_entries; + return atomic_read(&wilc->txq_entries); } int wilc_wlan_txq_add_mgmt_pkt(struct net_device *dev, void *priv, u8 *buffer, @@ -952,7 +952,7 @@ int wilc_wlan_handle_txq(struct wilc *wilc, u32 *txq_count) mutex_unlock(&wilc->txq_add_to_head_cs); out_update_cnt: - *txq_count = wilc->txq_entries; + *txq_count = atomic_read(&wilc->txq_entries); return ret; } -- 2.25.1
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