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3e4b10d7a4
This patch converts trace_napi_poll from DECLARE_EVENT to TRACE_EVENT
to improve the usability of napi_poll tracepoint.
<idle>-0 [001] 241302.750777: napi_poll: napi poll on napi struct f6acc480 for device eth3
<idle>-0 [000] 241302.852389: napi_poll: napi poll on napi struct f5d0d70c for device eth1
The original patch is below:
http://marc.info/?l=linux-kernel&m=126021713809450&w=2
[ sanagi.koki@jp.fujitsu.com: And add a fix by Steven Rostedt:
http://marc.info/?l=linux-kernel&m=126150506519173&w=2 ]
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Kaneshige Kenji <kaneshige.kenji@jp.fujitsu.com>
Cc: Izumo Taku <izumi.taku@jp.fujitsu.com>
Cc: Kosaki Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Scott Mcmillan <scott.a.mcmillan@intel.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
LKML-Reference: <4C7242D7.4050009@jp.fujitsu.com>
Signed-off-by: Koki Sanagi <sanagi.koki@jp.fujitsu.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
38 lines
780 B
C
38 lines
780 B
C
#undef TRACE_SYSTEM
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#define TRACE_SYSTEM napi
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#if !defined(_TRACE_NAPI_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_NAPI_H_
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#include <linux/netdevice.h>
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#include <linux/tracepoint.h>
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#include <linux/ftrace.h>
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#define NO_DEV "(no_device)"
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TRACE_EVENT(napi_poll,
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TP_PROTO(struct napi_struct *napi),
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TP_ARGS(napi),
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TP_STRUCT__entry(
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__field( struct napi_struct *, napi)
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__string( dev_name, napi->dev ? napi->dev->name : NO_DEV)
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),
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TP_fast_assign(
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__entry->napi = napi;
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__assign_str(dev_name, napi->dev ? napi->dev->name : NO_DEV);
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),
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TP_printk("napi poll on napi struct %p for device %s",
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__entry->napi, __get_str(dev_name))
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);
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#undef NO_DEV
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#endif /* _TRACE_NAPI_H_ */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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