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Commit 690e792c authored by Zhaoyang Liu's avatar Zhaoyang Liu Committed by Kalle Valo
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mwifiex: remove_bss_prio_lock 



This patch does away with spinlock in
mwifiex_wmm_get_highest_priolist_ptr in order to improve TP.

Signed-off-by: default avatarZhaoyang Liu <liuzy@marvell.com>
Signed-off-by: default avatarAvinash Patil <patila@marvell.com>
Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
parent 39df5e82

drivers/net/wireless/mwifiex/wmm.c

+2 −9
Original line number Diff line number Diff line
@@ -944,14 +944,11 @@ mwifiex_wmm_get_highest_priolist_ptr(struct mwifiex_adapter *adapter, 
	struct mwifiex_ra_list_tbl *ptr;

	struct mwifiex_tid_tbl *tid_ptr;

	atomic_t *hqp;

	unsigned long flags_bss, flags_ra;

	unsigned long flags_ra;

	int i, j;



	/* check the BSS with highest priority first */

	for (j = adapter->priv_num - 1; j >= 0; --j) {

		spin_lock_irqsave(&adapter->bss_prio_tbl[j].bss_prio_lock,

				  flags_bss);



		/* iterate over BSS with the equal priority */

		list_for_each_entry(adapter->bss_prio_tbl[j].bss_prio_cur,

				    &adapter->bss_prio_tbl[j].bss_prio_head,
@@ -987,19 +984,15 @@ mwifiex_wmm_get_highest_priolist_ptr(struct mwifiex_adapter *adapter, 
			}

		}



		spin_unlock_irqrestore(&adapter->bss_prio_tbl[j].bss_prio_lock,

				       flags_bss);

	}



	return NULL;



found:

	/* holds bss_prio_lock / ra_list_spinlock */

	/* holds ra_list_spinlock */

	if (atomic_read(hqp) > i)

		atomic_set(hqp, i);

	spin_unlock_irqrestore(&priv_tmp->wmm.ra_list_spinlock, flags_ra);

	spin_unlock_irqrestore(&adapter->bss_prio_tbl[j].bss_prio_lock,

			       flags_bss);



	*priv = priv_tmp;

	*tid = tos_to_tid[i];