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mt76: mt7615: add tracing support

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Introduce token tracing support in mt7615_mac_tx_free routine

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Lorenzo Bianconi
2019-12-29 11:03:07 +01:00
committed by Felix Fietkau
parent 5498974bd5
commit 9cd82366a7
4 changed files with 77 additions and 2 deletions
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4
drivers/net/wireless/mediatek/mt76/mt7615/Makefile
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@@ -2,5 +2,7 @@
obj-$(CONFIG_MT7615E) += mt7615e.o
CFLAGS_trace.o := -I$(src)
mt7615e-y := pci.o init.o dma.o eeprom.o main.o mcu.o mac.o \
debugfs.o
debugfs.o trace.o

7
drivers/net/wireless/mediatek/mt76/mt7615/mac.c
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@@ -12,6 +12,7 @@
#include "mt7615.h"
#include "../trace.h"
#include "../dma.h"
#include "mt7615_trace.h"
#include "mac.h"
#define to_rssi(field, rxv) ((FIELD_GET(field, rxv) - 220) / 2)
@@ -1300,13 +1301,17 @@ void mt7615_mac_tx_free(struct mt7615_dev *dev, struct sk_buff *skb)
count = FIELD_GET(MT_TX_FREE_MSDU_ID_CNT, le16_to_cpu(free->ctrl));
for (i = 0; i < count; i++) {
u16 token = le16_to_cpu(free->token[i]);
spin_lock_bh(&dev->token_lock);
txwi = idr_remove(&dev->token, le16_to_cpu(free->token[i]));
txwi = idr_remove(&dev->token, token);
spin_unlock_bh(&dev->token_lock);
if (!txwi)
continue;
trace_mac_tx_free(dev, token);
mt7615_txp_skb_unmap(mdev, txwi);
if (txwi->skb) {
mt76_tx_complete_skb(mdev, txwi->skb);

56
drivers/net/wireless/mediatek/mt76/mt7615/mt7615_trace.h Normal file
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@@ -0,0 +1,56 @@
/* SPDX-License-Identifier: ISC */
/*
* Copyright (C) 2019 Lorenzo Bianconi <lorenzo@kernel.org>
*/
#if !defined(__MT7615_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
#define __MT7615_TRACE_H
#include <linux/tracepoint.h>
#include "mt7615.h"
#undef TRACE_SYSTEM
#define TRACE_SYSTEM mt7615
#define MAXNAME 32
#define DEV_ENTRY __array(char, wiphy_name, 32)
#define DEV_ASSIGN strlcpy(__entry->wiphy_name, \
wiphy_name(mt76_hw(dev)->wiphy), MAXNAME)
#define DEV_PR_FMT "%s"
#define DEV_PR_ARG __entry->wiphy_name
#define TOKEN_ENTRY __field(u16, token)
#define TOKEN_ASSIGN __entry->token = token
#define TOKEN_PR_FMT " %d"
#define TOKEN_PR_ARG __entry->token
DECLARE_EVENT_CLASS(dev_token,
TP_PROTO(struct mt7615_dev *dev, u16 token),
TP_ARGS(dev, token),
TP_STRUCT__entry(
DEV_ENTRY
TOKEN_ENTRY
),
TP_fast_assign(
DEV_ASSIGN;
TOKEN_ASSIGN;
),
TP_printk(
DEV_PR_FMT TOKEN_PR_FMT,
DEV_PR_ARG, TOKEN_PR_ARG
)
);
DEFINE_EVENT(dev_token, mac_tx_free,
TP_PROTO(struct mt7615_dev *dev, u16 token),
TP_ARGS(dev, token)
);
#endif
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .
#undef TRACE_INCLUDE_FILE
#define TRACE_INCLUDE_FILE mt7615_trace
#include <trace/define_trace.h>

12
drivers/net/wireless/mediatek/mt76/mt7615/trace.c Normal file
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@@ -0,0 +1,12 @@
// SPDX-License-Identifier: ISC
/*
* Copyright (C) 2019 Lorenzo Bianconi <lorenzo@kernel.org>
*/
#include <linux/module.h>
#ifndef __CHECKER__
#define CREATE_TRACE_POINTS
#include "mt7615_trace.h"
#endif