Commit 3e4b10d7 authored Aug 23, 2010 by Neil Horman Committed by Frederic Weisbecker Sep 07, 2010

napi: Convert trace_napi_poll to TRACE_EVENT

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>

parent 2bf2160d

include/trace/events/napi.h

+23 −2

Original line number	Diff line number	Diff line
		@@ -6,10 +6,31 @@

		#include <linux/netdevice.h>
		#include <linux/tracepoint.h>
		#include <linux/ftrace.h>

		#define NO_DEV "(no_device)"

		TRACE_EVENT(napi_poll,

		DECLARE_TRACE(napi_poll,
		TP_PROTO(struct napi_struct *napi),
		TP_ARGS(napi));

		TP_ARGS(napi),

		TP_STRUCT__entry(
		__field( struct napi_struct *, napi)
		__string( dev_name, napi->dev ? napi->dev->name : NO_DEV)
		),

		TP_fast_assign(
		__entry->napi = napi;
		__assign_str(dev_name, napi->dev ? napi->dev->name : NO_DEV);
		),

		TP_printk("napi poll on napi struct %p for device %s",
		__entry->napi, __get_str(dev_name))
		);

		#undef NO_DEV

		#endif /* _TRACE_NAPI_H_ */

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