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wil6210: more debug info for vring

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print used/available counters on debugfs;
print to dmesg when Tx vring becomes empty

This aids with performance investigation

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Vladimir Kondratiev
2014-06-16 19:37:04 +03:00
committed by John W. Linville
parent 8eea944af0
commit 67c3e1b41e
2 changed files with 11 additions and 2 deletions
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9
drivers/net/wireless/ath/wil6210/debugfs.c
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@@ -72,11 +72,16 @@ static int wil_vring_debugfs_show(struct seq_file *s, void *data)
if (vring->va) { if (vring->va) {
int cid = wil->vring2cid_tid[i][0]; int cid = wil->vring2cid_tid[i][0];
int tid = wil->vring2cid_tid[i][1]; int tid = wil->vring2cid_tid[i][1];
u32 swhead = vring->swhead;
u32 swtail = vring->swtail;
int used = (vring->size + swhead - swtail)
% vring->size;
int avail = vring->size - used - 1;
char name[10]; char name[10];
snprintf(name, sizeof(name), "tx_%2d", i); snprintf(name, sizeof(name), "tx_%2d", i);
seq_printf(s, "\n%pM CID %d TID %d\n", seq_printf(s, "\n%pM CID %d TID %d [%3d|%3d]\n",
wil->sta[cid].addr, cid, tid); wil->sta[cid].addr, cid, tid, used, avail);
wil_print_vring(s, wil, name, vring, '_', 'H'); wil_print_vring(s, wil, name, vring, '_', 'H');
} }
} }

4
drivers/net/wireless/ath/wil6210/txrx.c
View File

@@ -1132,6 +1132,10 @@ int wil_tx_complete(struct wil6210_priv *wil, int ringid)
done++; done++;
} }
} }
if (wil_vring_is_empty(vring))
wil_dbg_txrx(wil, "Ring[%2d] empty\n", ringid);
if (wil_vring_avail_tx(vring) > wil_vring_wmark_high(vring)) if (wil_vring_avail_tx(vring) > wil_vring_wmark_high(vring))
netif_tx_wake_all_queues(wil_to_ndev(wil)); netif_tx_wake_all_queues(wil_to_ndev(wil));