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napi: Convert trace_napi_poll to TRACE_EVENT

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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>
This commit is contained in:
Neil Horman 2010-08-23 18:43:51 +09:00 committed by Frederic Weisbecker
parent 2bf2160d88
commit 3e4b10d7a4
1 changed files with 23 additions and 2 deletions
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25
include/trace/events/napi.h
View file

@ -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_ */