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iwlwifi: pcie: add TPT oriented prints

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Currently there is no way to debug RX/TX paths using prints
without harming tpt. Add prints to debug RX allocation path.
We can still get 1.9 gbps with those on.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Sara Sharon
2018-12-17 11:39:42 +02:00
committed by Luca Coelho
parent ec4156a91d
commit 6dcdd16577
2 changed files with 17 additions and 8 deletions
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20
drivers/net/wireless/intel/iwlwifi/pcie/rx.c
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@@ -540,7 +540,7 @@ static void iwl_pcie_rx_allocator(struct iwl_trans *trans)
struct list_head local_empty;
int pending = atomic_read(&rba->req_pending);
IWL_DEBUG_RX(trans, "Pending allocation requests = %d\n", pending);
IWL_DEBUG_TPT(trans, "Pending allocation requests = %d\n", pending);
/* If we were scheduled - there is at least one request */
spin_lock(&rba->lock);
@@ -598,9 +598,10 @@ static void iwl_pcie_rx_allocator(struct iwl_trans *trans)
if (!pending) {
pending = atomic_read(&rba->req_pending);
IWL_DEBUG_RX(trans,
"Got more pending allocation requests = %d\n",
pending);
if (pending)
IWL_DEBUG_TPT(trans,
"Got more pending allocation requests = %d\n",
pending);
}
spin_lock(&rba->lock);
@@ -619,7 +620,7 @@ static void iwl_pcie_rx_allocator(struct iwl_trans *trans)
list_splice_tail(&local_empty, &rba->rbd_empty);
spin_unlock(&rba->lock);
IWL_DEBUG_RX(trans, "%s, exit.\n", __func__);
IWL_DEBUG_TPT(trans, "%s, exit.\n", __func__);
}
/*
@@ -1429,6 +1430,9 @@ restart:
!emergency)) {
iwl_pcie_rx_move_to_allocator(rxq, rba);
emergency = true;
IWL_DEBUG_TPT(trans,
"RX path is in emergency. Pending allocations %d\n",
rb_pending_alloc);
}
IWL_DEBUG_RX(trans, "Q %d: HW = %d, SW = %d\n", rxq->id, r, i);
@@ -1458,8 +1462,12 @@ restart:
count++;
if (count == 8) {
count = 0;
if (rb_pending_alloc < rxq->queue_size / 3)
if (rb_pending_alloc < rxq->queue_size / 3) {
IWL_DEBUG_TPT(trans,
"RX path exited emergency. Pending allocations %d\n",
rb_pending_alloc);
emergency = false;
}
rxq->read = i;
spin_unlock(&rxq->lock);