From 141b6b2ad75d92770240de3af98d55c41ce7cd18 Mon Sep 17 00:00:00 2001 From: Cong Wang Date: Wed, 1 May 2019 19:56:59 -0700 Subject: net: add a generic tracepoint for TX queue timeout Although devlink health report does a nice job on reporting TX timeout and other NIC errors, unfortunately it requires drivers to support it but currently only mlx5 has implemented it. Before other drivers could catch up, it is useful to have a generic tracepoint to monitor this kind of TX timeout. We have been suffering TX timeout with different drivers, we plan to start to monitor it with rasdaemon which just needs a new tracepoint. Sample output: ksoftirqd/1-16 [001] ..s2 144.043173: net_dev_xmit_timeout: dev=ens3 driver=e1000 queue=0 Cc: Eran Ben Elisha Cc: Jiri Pirko Signed-off-by: Cong Wang Acked-by: Jiri Pirko Reviewed-by: Eran Ben Elisha Signed-off-by: David S. Miller --- include/trace/events/net.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'include/trace/events/net.h') diff --git a/include/trace/events/net.h b/include/trace/events/net.h index 1efd7d9b25fe..2399073c3afc 100644 --- a/include/trace/events/net.h +++ b/include/trace/events/net.h @@ -95,6 +95,29 @@ TRACE_EVENT(net_dev_xmit, __get_str(name), __entry->skbaddr, __entry->len, __entry->rc) ); +TRACE_EVENT(net_dev_xmit_timeout, + + TP_PROTO(struct net_device *dev, + int queue_index), + + TP_ARGS(dev, queue_index), + + TP_STRUCT__entry( + __string( name, dev->name ) + __string( driver, netdev_drivername(dev)) + __field( int, queue_index ) + ), + + TP_fast_assign( + __assign_str(name, dev->name); + __assign_str(driver, netdev_drivername(dev)); + __entry->queue_index = queue_index; + ), + + TP_printk("dev=%s driver=%s queue=%d", + __get_str(name), __get_str(driver), __entry->queue_index) +); + DECLARE_EVENT_CLASS(net_dev_template, TP_PROTO(struct sk_buff *skb), -- cgit v1.2.3