root/include/trace/events/napi.h

#undef TRACE_SYSTEM
#define TRACE_SYSTEM napi

#if !defined(_TRACE_NAPI_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_NAPI_H_

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

#define NO_DEV "(no_device)"

TRACE_EVENT(napi_poll,

        TP_PROTO(struct napi_struct *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_ */

/* This part must be outside protection */
#include <trace/define_trace.h>