diff options
| author | P Praneesh <ppranees@codeaurora.org> | 2020-11-09 15:11:55 +0530 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2020-11-23 20:03:39 +0200 |
| commit | 0eaa4c1d34c5635e293b7068ae170152ce0d60ff (patch) | |
| tree | 3ee5479ad97b38a6811edeb4585ee5a0137f6f62 /drivers/net/wireless/ath/ath11k | |
| parent | c134d1f8c436d96b3f62896c630278e3ec001280 (diff) | |
ath11k: add processor_id based ring_selector logic
Current ring selector logic follows round-robin scheduling,
when a process switch from one processor to another each time,
the data in the cache would have to be invalidated
and re-loaded from RAM leads to poor cache utilization.
Therefore smp_processor_id() attempt to keep processes
on the same processor via processor affinity which improves
cache utilization. Also, ring selection could be chosen round
robin when the processor_id based ring selection does not
have the resources.
Tested-on : IPQ8074 hw2.0 AHB WLAN.HK.2.4.0.1-00874-QCAHKSWPL_SILICONZ-1
Signed-off-by: P Praneesh <ppranees@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/1604914915-12831-1-git-send-email-ppranees@codeaurora.org
Diffstat (limited to 'drivers/net/wireless/ath/ath11k')
| -rw-r--r-- | drivers/net/wireless/ath/ath11k/core.h | 3 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/ath11k/dp_tx.c | 8 |
2 files changed, 4 insertions, 7 deletions
diff --git a/drivers/net/wireless/ath/ath11k/core.h b/drivers/net/wireless/ath/ath11k/core.h index 79224ed703db..8851cf80ac96 100644 --- a/drivers/net/wireless/ath/ath11k/core.h +++ b/drivers/net/wireless/ath/ath11k/core.h @@ -728,9 +728,6 @@ struct ath11k_base { } stats; u32 pktlog_defs_checksum; - /* Round robbin based TCL ring selector */ - atomic_t tcl_ring_selector; - struct ath11k_dbring_cap *db_caps; u32 num_db_cap; diff --git a/drivers/net/wireless/ath/ath11k/dp_tx.c b/drivers/net/wireless/ath/ath11k/dp_tx.c index 3d962eee4d61..6ea65533a119 100644 --- a/drivers/net/wireless/ath/ath11k/dp_tx.c +++ b/drivers/net/wireless/ath/ath11k/dp_tx.c @@ -105,14 +105,14 @@ int ath11k_dp_tx(struct ath11k *ar, struct ath11k_vif *arvif, pool_id = skb_get_queue_mapping(skb) & (ATH11K_HW_MAX_QUEUES - 1); - /* Let the default ring selection be based on a round robin - * fashion where one of the 3 tcl rings are selected based on - * the tcl_ring_selector counter. In case that ring + /* Let the default ring selection be based on current processor + * number, where one of the 3 tcl rings are selected based on + * the smp_processor_id(). In case that ring * is full/busy, we resort to other available rings. * If all rings are full, we drop the packet. * //TODO Add throttling logic when all rings are full */ - ring_selector = atomic_inc_return(&ab->tcl_ring_selector); + ring_selector = smp_processor_id(); tcl_ring_sel: tcl_ring_retry = false; |