staging: fsl-dpaa2/eth: Add trace points
Add trace events in significant places of the data path. Useful for debuggging. Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ioana Radulescu
Greg Kroah-Hartman
parent
85047abd06
commit
5636187b60
@ -5,3 +5,6 @@
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obj-$(CONFIG_FSL_DPAA2_ETH) += fsl-dpaa2-eth.o
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fsl-dpaa2-eth-objs := dpaa2-eth.o dpaa2-ethtool.o dpni.o
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# Needed by the tracing framework
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CFLAGS_dpaa2-eth.o := -I$(src)
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185
drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth-trace.h
Normal file
185
drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth-trace.h
Normal file
@ -0,0 +1,185 @@
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/* Copyright 2014-2015 Freescale Semiconductor Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Freescale Semiconductor nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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*
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* ALTERNATIVELY, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") as published by the Free Software
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* Foundation, either version 2 of that License or (at your option) any
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* later version.
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*
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* THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM dpaa2_eth
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#if !defined(_DPAA2_ETH_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _DPAA2_ETH_TRACE_H
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#include <linux/skbuff.h>
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#include <linux/netdevice.h>
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#include "dpaa2-eth.h"
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#include <linux/tracepoint.h>
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#define TR_FMT "[%s] fd: addr=0x%llx, len=%u, off=%u"
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/* trace_printk format for raw buffer event class */
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#define TR_BUF_FMT "[%s] vaddr=%p size=%zu dma_addr=%pad map_size=%zu bpid=%d"
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/* This is used to declare a class of events.
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* individual events of this type will be defined below.
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*/
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/* Store details about a frame descriptor */
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DECLARE_EVENT_CLASS(dpaa2_eth_fd,
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/* Trace function prototype */
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TP_PROTO(struct net_device *netdev,
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const struct dpaa2_fd *fd),
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/* Repeat argument list here */
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TP_ARGS(netdev, fd),
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/* A structure containing the relevant information we want
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* to record. Declare name and type for each normal element,
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* name, type and size for arrays. Use __string for variable
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* length strings.
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*/
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TP_STRUCT__entry(
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__field(u64, fd_addr)
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__field(u32, fd_len)
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__field(u16, fd_offset)
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__string(name, netdev->name)
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),
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/* The function that assigns values to the above declared
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* fields
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*/
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TP_fast_assign(
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__entry->fd_addr = dpaa2_fd_get_addr(fd);
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__entry->fd_len = dpaa2_fd_get_len(fd);
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__entry->fd_offset = dpaa2_fd_get_offset(fd);
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__assign_str(name, netdev->name);
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),
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/* This is what gets printed when the trace event is
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* triggered.
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*/
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TP_printk(TR_FMT,
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__get_str(name),
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__entry->fd_addr,
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__entry->fd_len,
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__entry->fd_offset)
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);
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/* Now declare events of the above type. Format is:
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* DEFINE_EVENT(class, name, proto, args), with proto and args same as for class
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*/
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/* Tx (egress) fd */
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DEFINE_EVENT(dpaa2_eth_fd, dpaa2_tx_fd,
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TP_PROTO(struct net_device *netdev,
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const struct dpaa2_fd *fd),
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TP_ARGS(netdev, fd)
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);
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/* Rx fd */
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DEFINE_EVENT(dpaa2_eth_fd, dpaa2_rx_fd,
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TP_PROTO(struct net_device *netdev,
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const struct dpaa2_fd *fd),
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TP_ARGS(netdev, fd)
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);
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/* Tx confirmation fd */
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DEFINE_EVENT(dpaa2_eth_fd, dpaa2_tx_conf_fd,
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TP_PROTO(struct net_device *netdev,
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const struct dpaa2_fd *fd),
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TP_ARGS(netdev, fd)
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);
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/* Log data about raw buffers. Useful for tracing DPBP content. */
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TRACE_EVENT(dpaa2_eth_buf_seed,
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/* Trace function prototype */
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TP_PROTO(struct net_device *netdev,
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/* virtual address and size */
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void *vaddr,
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size_t size,
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/* dma map address and size */
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dma_addr_t dma_addr,
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size_t map_size,
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/* buffer pool id, if relevant */
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u16 bpid),
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/* Repeat argument list here */
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TP_ARGS(netdev, vaddr, size, dma_addr, map_size, bpid),
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/* A structure containing the relevant information we want
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* to record. Declare name and type for each normal element,
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* name, type and size for arrays. Use __string for variable
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* length strings.
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*/
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TP_STRUCT__entry(
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__field(void *, vaddr)
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__field(size_t, size)
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__field(dma_addr_t, dma_addr)
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__field(size_t, map_size)
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__field(u16, bpid)
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__string(name, netdev->name)
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),
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/* The function that assigns values to the above declared
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* fields
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*/
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TP_fast_assign(
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__entry->vaddr = vaddr;
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__entry->size = size;
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__entry->dma_addr = dma_addr;
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__entry->map_size = map_size;
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__entry->bpid = bpid;
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__assign_str(name, netdev->name);
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),
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/* This is what gets printed when the trace event is
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* triggered.
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*/
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TP_printk(TR_BUF_FMT,
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__get_str(name),
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__entry->vaddr,
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__entry->size,
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&__entry->dma_addr,
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__entry->map_size,
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__entry->bpid)
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);
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/* If only one event of a certain type needs to be declared, use TRACE_EVENT().
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* The syntax is the same as for DECLARE_EVENT_CLASS().
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*/
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#endif /* _DPAA2_ETH_TRACE_H */
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/* This must be outside ifdef _DPAA2_ETH_TRACE_H */
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#undef TRACE_INCLUDE_PATH
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#define TRACE_INCLUDE_PATH .
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#undef TRACE_INCLUDE_FILE
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#define TRACE_INCLUDE_FILE dpaa2-eth-trace
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#include <trace/define_trace.h>
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@ -42,6 +42,12 @@
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#include "../../fsl-mc/include/mc-sys.h"
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#include "dpaa2-eth.h"
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/* CREATE_TRACE_POINTS only needs to be defined once. Other dpa files
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* using trace events only need to #include <trace/events/sched.h>
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*/
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#define CREATE_TRACE_POINTS
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#include "dpaa2-eth-trace.h"
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MODULE_LICENSE("Dual BSD/GPL");
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MODULE_AUTHOR("Freescale Semiconductor, Inc");
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MODULE_DESCRIPTION("Freescale DPAA2 Ethernet Driver");
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@ -213,6 +219,9 @@ static void dpaa2_eth_rx(struct dpaa2_eth_priv *priv,
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struct dpaa2_fas *fas;
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u32 status = 0;
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/* Tracing point */
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trace_dpaa2_rx_fd(priv->net_dev, fd);
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dma_unmap_single(dev, addr, DPAA2_ETH_RX_BUF_SIZE, DMA_FROM_DEVICE);
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vaddr = phys_to_virt(addr);
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@ -583,6 +592,9 @@ static int dpaa2_eth_tx(struct sk_buff *skb, struct net_device *net_dev)
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goto err_build_fd;
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}
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/* Tracing point */
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trace_dpaa2_tx_fd(net_dev, &fd);
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/* TxConf FQ selection primarily based on cpu affinity; this is
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* non-migratable context, so it's safe to call smp_processor_id().
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*/
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@ -623,6 +635,9 @@ static void dpaa2_eth_tx_conf(struct dpaa2_eth_priv *priv,
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struct dpaa2_eth_drv_stats *percpu_extras;
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u32 status = 0;
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/* Tracing point */
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trace_dpaa2_tx_conf_fd(priv->net_dev, fd);
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percpu_extras = this_cpu_ptr(priv->percpu_extras);
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percpu_extras->tx_conf_frames++;
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percpu_extras->tx_conf_bytes += dpaa2_fd_get_len(fd);
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@ -707,6 +722,12 @@ static int add_bufs(struct dpaa2_eth_priv *priv, u16 bpid)
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goto err_map;
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buf_array[i] = addr;
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/* tracing point */
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trace_dpaa2_eth_buf_seed(priv->net_dev,
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buf, DPAA2_ETH_BUF_RAW_SIZE,
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addr, DPAA2_ETH_RX_BUF_SIZE,
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bpid);
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}
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release_bufs:
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@ -43,6 +43,8 @@
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#include "dpni.h"
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#include "dpni-cmd.h"
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#include "dpaa2-eth-trace.h"
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#define DPAA2_ETH_STORE_SIZE 16
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/* Maximum number of scatter-gather entries in an ingress frame,
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