ath10k: remove tsf argument from rx_desc tracing

Fundamentally this was wrong. Tsf is only valid
in last MPDU of a PPDU. This means tsf value was
wrong most of the time during heavy traffic.

Also I don't see much point in exposing a
redundant (and broken) tsf value. Userspace can
already read it from the dumped rx descriptor
buffer.

Cc: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

2 files changed, 4 insertions, 9 deletions

diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c
index 4fc4dbd2aaab..a691fdf2fbae 100644
--- a/drivers/net/wireless/ath/ath10k/htt_rx.c
+++ b/drivers/net/wireless/ath/ath10k/htt_rx.c
@@ -325,7 +325,6 @@ static int ath10k_htt_rx_amsdu_pop(struct ath10k_htt *htt,
         int msdu_len, msdu_chaining = 0;
         struct sk_buff *msdu, *next;
         struct htt_rx_desc *rx_desc;
-        u32 tsf;
 
         lockdep_assert_held(&htt->rx_ring.lock);
 
@@ -449,8 +448,7 @@ static int ath10k_htt_rx_amsdu_pop(struct ath10k_htt *htt,
                 last_msdu = __le32_to_cpu(rx_desc->msdu_end.info0) &
                                 RX_MSDU_END_INFO0_LAST_MSDU;
 
-                tsf = __le32_to_cpu(rx_desc->ppdu_end.tsf_timestamp);
-                trace_ath10k_htt_rx_desc(ar, tsf, &rx_desc->attention,
+                trace_ath10k_htt_rx_desc(ar, &rx_desc->attention,
                                          sizeof(*rx_desc) - sizeof(u32));
                 if (last_msdu) {
                         msdu->next = NULL;
diff --git a/drivers/net/wireless/ath/ath10k/trace.h b/drivers/net/wireless/ath/ath10k/trace.h
index 9d34e7f6c455..2409cb54a32b 100644
--- a/drivers/net/wireless/ath/ath10k/trace.h
+++ b/drivers/net/wireless/ath/ath10k/trace.h
@@ -282,14 +282,13 @@ TRACE_EVENT(ath10k_htt_pktlog,
 );
 
 TRACE_EVENT(ath10k_htt_rx_desc,
-            TP_PROTO(struct ath10k *ar, u32 tsf, void *rxdesc, u16 len),
+            TP_PROTO(struct ath10k *ar, void *rxdesc, u16 len),
 
-        TP_ARGS(ar, tsf, rxdesc, len),
+        TP_ARGS(ar, rxdesc, len),
 
         TP_STRUCT__entry(
                 __string(device, dev_name(ar->dev))
                 __string(driver, dev_driver_string(ar->dev))
-                __field(u32, tsf)
                 __field(u16, len)
                 __dynamic_array(u8, rxdesc, len)
         ),
@@ -297,16 +296,14 @@ TRACE_EVENT(ath10k_htt_rx_desc,
         TP_fast_assign(
                 __assign_str(device, dev_name(ar->dev));
                 __assign_str(driver, dev_driver_string(ar->dev));
-                __entry->tsf = tsf;
                 __entry->len = len;
                 memcpy(__get_dynamic_array(rxdesc), rxdesc, len);
         ),
 
         TP_printk(
-                "%s %s %u len %hu",
+                "%s %s len %hu",
                 __get_str(driver),
                 __get_str(device),
-                __entry->tsf,
                 __entry->len
          )
 );