Commit 5636187b authored by Ioana Radulescu's avatar Ioana Radulescu Committed by Greg Kroah-Hartman

staging: fsl-dpaa2/eth: Add trace points

Add trace events in significant places of the data path.
Useful for debuggging.
Signed-off-by: default avatarIoana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 85047abd
......@@ -5,3 +5,6 @@
obj-$(CONFIG_FSL_DPAA2_ETH) += fsl-dpaa2-eth.o
fsl-dpaa2-eth-objs := dpaa2-eth.o dpaa2-ethtool.o dpni.o
# Needed by the tracing framework
CFLAGS_dpaa2-eth.o := -I$(src)
/* Copyright 2014-2015 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 dpaa2_eth
#if !defined(_DPAA2_ETH_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
#define _DPAA2_ETH_TRACE_H
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include "dpaa2-eth.h"
#include <linux/tracepoint.h>
#define TR_FMT "[%s] fd: addr=0x%llx, len=%u, off=%u"
/* trace_printk format for raw buffer event class */
#define TR_BUF_FMT "[%s] vaddr=%p size=%zu dma_addr=%pad map_size=%zu bpid=%d"
/* This is used to declare a class of events.
* individual events of this type will be defined below.
*/
/* Store details about a frame descriptor */
DECLARE_EVENT_CLASS(dpaa2_eth_fd,
/* Trace function prototype */
TP_PROTO(struct net_device *netdev,
const struct dpaa2_fd *fd),
/* Repeat argument list here */
TP_ARGS(netdev, 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(u64, fd_addr)
__field(u32, fd_len)
__field(u16, fd_offset)
__string(name, netdev->name)
),
/* The function that assigns values to the above declared
* fields
*/
TP_fast_assign(
__entry->fd_addr = dpaa2_fd_get_addr(fd);
__entry->fd_len = dpaa2_fd_get_len(fd);
__entry->fd_offset = dpaa2_fd_get_offset(fd);
__assign_str(name, netdev->name);
),
/* This is what gets printed when the trace event is
* triggered.
*/
TP_printk(TR_FMT,
__get_str(name),
__entry->fd_addr,
__entry->fd_len,
__entry->fd_offset)
);
/* 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(dpaa2_eth_fd, dpaa2_tx_fd,
TP_PROTO(struct net_device *netdev,
const struct dpaa2_fd *fd),
TP_ARGS(netdev, fd)
);
/* Rx fd */
DEFINE_EVENT(dpaa2_eth_fd, dpaa2_rx_fd,
TP_PROTO(struct net_device *netdev,
const struct dpaa2_fd *fd),
TP_ARGS(netdev, fd)
);
/* Tx confirmation fd */
DEFINE_EVENT(dpaa2_eth_fd, dpaa2_tx_conf_fd,
TP_PROTO(struct net_device *netdev,
const struct dpaa2_fd *fd),
TP_ARGS(netdev, fd)
);
/* Log data about raw buffers. Useful for tracing DPBP content. */
TRACE_EVENT(dpaa2_eth_buf_seed,
/* Trace function prototype */
TP_PROTO(struct net_device *netdev,
/* virtual address and size */
void *vaddr,
size_t size,
/* dma map address and size */
dma_addr_t dma_addr,
size_t map_size,
/* buffer pool id, if relevant */
u16 bpid),
/* Repeat argument list here */
TP_ARGS(netdev, vaddr, size, dma_addr, map_size, bpid),
/* 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(void *, vaddr)
__field(size_t, size)
__field(dma_addr_t, dma_addr)
__field(size_t, map_size)
__field(u16, bpid)
__string(name, netdev->name)
),
/* The function that assigns values to the above declared
* fields
*/
TP_fast_assign(
__entry->vaddr = vaddr;
__entry->size = size;
__entry->dma_addr = dma_addr;
__entry->map_size = map_size;
__entry->bpid = bpid;
__assign_str(name, netdev->name);
),
/* This is what gets printed when the trace event is
* triggered.
*/
TP_printk(TR_BUF_FMT,
__get_str(name),
__entry->vaddr,
__entry->size,
&__entry->dma_addr,
__entry->map_size,
__entry->bpid)
);
/* 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 /* _DPAA2_ETH_TRACE_H */
/* This must be outside ifdef _DPAA2_ETH_TRACE_H */
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .
#undef TRACE_INCLUDE_FILE
#define TRACE_INCLUDE_FILE dpaa2-eth-trace
#include <trace/define_trace.h>
......@@ -42,6 +42,12 @@
#include "../../fsl-mc/include/mc-sys.h"
#include "dpaa2-eth.h"
/* CREATE_TRACE_POINTS only needs to be defined once. Other dpa files
* using trace events only need to #include <trace/events/sched.h>
*/
#define CREATE_TRACE_POINTS
#include "dpaa2-eth-trace.h"
MODULE_LICENSE("Dual BSD/GPL");
MODULE_AUTHOR("Freescale Semiconductor, Inc");
MODULE_DESCRIPTION("Freescale DPAA2 Ethernet Driver");
......@@ -213,6 +219,9 @@ static void dpaa2_eth_rx(struct dpaa2_eth_priv *priv,
struct dpaa2_fas *fas;
u32 status = 0;
/* Tracing point */
trace_dpaa2_rx_fd(priv->net_dev, fd);
dma_unmap_single(dev, addr, DPAA2_ETH_RX_BUF_SIZE, DMA_FROM_DEVICE);
vaddr = phys_to_virt(addr);
......@@ -583,6 +592,9 @@ static int dpaa2_eth_tx(struct sk_buff *skb, struct net_device *net_dev)
goto err_build_fd;
}
/* Tracing point */
trace_dpaa2_tx_fd(net_dev, &fd);
/* TxConf FQ selection primarily based on cpu affinity; this is
* non-migratable context, so it's safe to call smp_processor_id().
*/
......@@ -623,6 +635,9 @@ static void dpaa2_eth_tx_conf(struct dpaa2_eth_priv *priv,
struct dpaa2_eth_drv_stats *percpu_extras;
u32 status = 0;
/* Tracing point */
trace_dpaa2_tx_conf_fd(priv->net_dev, fd);
percpu_extras = this_cpu_ptr(priv->percpu_extras);
percpu_extras->tx_conf_frames++;
percpu_extras->tx_conf_bytes += dpaa2_fd_get_len(fd);
......@@ -707,6 +722,12 @@ static int add_bufs(struct dpaa2_eth_priv *priv, u16 bpid)
goto err_map;
buf_array[i] = addr;
/* tracing point */
trace_dpaa2_eth_buf_seed(priv->net_dev,
buf, DPAA2_ETH_BUF_RAW_SIZE,
addr, DPAA2_ETH_RX_BUF_SIZE,
bpid);
}
release_bufs:
......
......@@ -43,6 +43,8 @@
#include "dpni.h"
#include "dpni-cmd.h"
#include "dpaa2-eth-trace.h"
#define DPAA2_ETH_STORE_SIZE 16
/* Maximum number of scatter-gather entries in an ingress frame,
......
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