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dpaa_eth: add trace points

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Add trace points on the hot processing path.

Signed-off-by: Ruxandra Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Madalin Bucur 2016-11-15 10:41:06 +02:00 committed by David S. Miller
parent 846a86e201
commit eb11ddf36e
4 changed files with 158 additions and 0 deletions
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1
drivers/net/ethernet/freescale/dpaa/Makefile
View File

@ -9,3 +9,4 @@ ccflags-y += -I$(FMAN)
obj-$(CONFIG_FSL_DPAA_ETH) += fsl_dpa.o
fsl_dpa-objs += dpaa_eth.o dpaa_ethtool.o dpaa_eth_sysfs.o
CFLAGS_dpaa_eth.o := -I$(src)

15
drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
View File

@ -59,6 +59,12 @@
#include "mac.h"
#include "dpaa_eth.h"
/* CREATE_TRACE_POINTS only needs to be defined once. Other dpaa files
* using trace events only need to #include <trace/events/sched.h>
*/
#define CREATE_TRACE_POINTS
#include "dpaa_eth_trace.h"
static int debug = -1;
module_param(debug, int, 0444);
MODULE_PARM_DESC(debug, "Module/Driver verbosity level (0=none,...,16=all)");
@ -1863,6 +1869,9 @@ static inline int dpaa_xmit(struct dpaa_priv *priv,
if (fd->bpid == FSL_DPAA_BPID_INV)
fd->cmd |= qman_fq_fqid(priv->conf_fqs[queue]);
/* Trace this Tx fd */
trace_dpaa_tx_fd(priv->net_dev, egress_fq, fd);
for (i = 0; i < DPAA_ENQUEUE_RETRIES; i++) {
err = qman_enqueue(egress_fq, fd);
if (err != -EBUSY)
@ -2097,6 +2106,9 @@ static enum qman_cb_dqrr_result rx_default_dqrr(struct qman_portal *portal,
if (!dpaa_bp)
return qman_cb_dqrr_consume;
/* Trace the Rx fd */
trace_dpaa_rx_fd(net_dev, fq, &dq->fd);
percpu_priv = this_cpu_ptr(priv->percpu_priv);
percpu_stats = &percpu_priv->stats;
@ -2194,6 +2206,9 @@ static enum qman_cb_dqrr_result conf_dflt_dqrr(struct qman_portal *portal,
net_dev = ((struct dpaa_fq *)fq)->net_dev;
priv = netdev_priv(net_dev);
/* Trace the fd */
trace_dpaa_tx_conf_fd(net_dev, fq, &dq->fd);
percpu_priv = this_cpu_ptr(priv->percpu_priv);
if (dpaa_eth_napi_schedule(percpu_priv, portal))

1
drivers/net/ethernet/freescale/dpaa/dpaa_eth.h
View File

@ -37,6 +37,7 @@
#include "fman.h"
#include "mac.h"
#include "dpaa_eth_trace.h"
#define DPAA_ETH_TXQ_NUM NR_CPUS

141
drivers/net/ethernet/freescale/dpaa/dpaa_eth_trace.h Normal file
View File

@ -0,0 +1,141 @@
/* Copyright 2013-2015 Freescale Semiconductor Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Freescale Semiconductor nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") as published by the Free Software
* Foundation, either version 2 of that License or (at your option) any
* later version.
*
* THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#undef TRACE_SYSTEM
#define TRACE_SYSTEM dpaa_eth
#if !defined(_DPAA_ETH_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
#define _DPAA_ETH_TRACE_H
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include "dpaa_eth.h"
#include <linux/tracepoint.h>
#define fd_format_name(format) { qm_fd_##format, #format }
#define fd_format_list \
fd_format_name(contig), \
fd_format_name(sg)
/* This is used to declare a class of events.
* individual events of this type will be defined below.
*/
/* Store details about a frame descriptor and the FQ on which it was
* transmitted/received.
*/
DECLARE_EVENT_CLASS(dpaa_eth_fd,
/* Trace function prototype */
TP_PROTO(struct net_device *netdev,
struct qman_fq *fq,
const struct qm_fd *fd),
/* Repeat argument list here */
TP_ARGS(netdev, fq, fd),
/* A structure containing the relevant information we want to record.
* Declare name and type for each normal element, name, type and size
* for arrays. Use __string for variable length strings.
*/
TP_STRUCT__entry(
__field(u32, fqid)
__field(u64, fd_addr)
__field(u8, fd_format)
__field(u16, fd_offset)
__field(u32, fd_length)
__field(u32, fd_status)
__string(name, netdev->name)
),
/* The function that assigns values to the above declared fields */
TP_fast_assign(
__entry->fqid = fq->fqid;
__entry->fd_addr = qm_fd_addr_get64(fd);
__entry->fd_format = qm_fd_get_format(fd);
__entry->fd_offset = qm_fd_get_offset(fd);
__entry->fd_length = qm_fd_get_length(fd);
__entry->fd_status = fd->status;
__assign_str(name, netdev->name);
),
/* This is what gets printed when the trace event is triggered */
TP_printk("[%s] fqid=%d, fd: addr=0x%llx, format=%s, off=%u, len=%u, status=0x%08x",
__get_str(name), __entry->fqid, __entry->fd_addr,
__print_symbolic(__entry->fd_format, fd_format_list),
__entry->fd_offset, __entry->fd_length, __entry->fd_status)
);
/* Now declare events of the above type. Format is:
* DEFINE_EVENT(class, name, proto, args), with proto and args same as for class
*/
/* Tx (egress) fd */
DEFINE_EVENT(dpaa_eth_fd, dpaa_tx_fd,
TP_PROTO(struct net_device *netdev,
struct qman_fq *fq,
const struct qm_fd *fd),
TP_ARGS(netdev, fq, fd)
);
/* Rx fd */
DEFINE_EVENT(dpaa_eth_fd, dpaa_rx_fd,
TP_PROTO(struct net_device *netdev,
struct qman_fq *fq,
const struct qm_fd *fd),
TP_ARGS(netdev, fq, fd)
);
/* Tx confirmation fd */
DEFINE_EVENT(dpaa_eth_fd, dpaa_tx_conf_fd,
TP_PROTO(struct net_device *netdev,
struct qman_fq *fq,
const struct qm_fd *fd),
TP_ARGS(netdev, fq, fd)
);
/* If only one event of a certain type needs to be declared, use TRACE_EVENT().
* The syntax is the same as for DECLARE_EVENT_CLASS().
*/
#endif /* _DPAA_ETH_TRACE_H */
/* This must be outside ifdef _DPAA_ETH_TRACE_H */
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .
#undef TRACE_INCLUDE_FILE
#define TRACE_INCLUDE_FILE dpaa_eth_trace
#include <trace/define_trace.h>