LXR linux/net/batman-adv/trace.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/* Copyright (C) 2010-2019  B.A.T.M.A.N. contributors:
   3 *
   4 * Sven Eckelmann
   5 */
   6
   7#if !defined(_NET_BATMAN_ADV_TRACE_H_) || defined(TRACE_HEADER_MULTI_READ)
   8#define _NET_BATMAN_ADV_TRACE_H_
   9
  10#include "main.h"
  11
  12#include <linux/bug.h>
  13#include <linux/kernel.h>
  14#include <linux/netdevice.h>
  15#include <linux/percpu.h>
  16#include <linux/printk.h>
  17#include <linux/tracepoint.h>
  18#include <linux/types.h>
  19
  20#undef TRACE_SYSTEM
  21#define TRACE_SYSTEM batadv
  22
  23/* provide dummy function when tracing is disabled */
  24#if !defined(CONFIG_BATMAN_ADV_TRACING)
  25
  26#undef TRACE_EVENT
  27#define TRACE_EVENT(name, proto, ...) \
  28        static inline void trace_ ## name(proto) {}
  29
  30#endif /* CONFIG_BATMAN_ADV_TRACING */
  31
  32#define BATADV_MAX_MSG_LEN      256
  33
  34TRACE_EVENT(batadv_dbg,
  35
  36            TP_PROTO(struct batadv_priv *bat_priv,
  37                     struct va_format *vaf),
  38
  39            TP_ARGS(bat_priv, vaf),
  40
  41            TP_STRUCT__entry(
  42                    __string(device, bat_priv->soft_iface->name)
  43                    __string(driver, KBUILD_MODNAME)
  44                    __dynamic_array(char, msg, BATADV_MAX_MSG_LEN)
  45            ),
  46
  47            TP_fast_assign(
  48                    __assign_str(device, bat_priv->soft_iface->name);
  49                    __assign_str(driver, KBUILD_MODNAME);
  50                    WARN_ON_ONCE(vsnprintf(__get_dynamic_array(msg),
  51                                           BATADV_MAX_MSG_LEN,
  52                                           vaf->fmt,
  53                                           *vaf->va) >= BATADV_MAX_MSG_LEN);
  54            ),
  55
  56            TP_printk(
  57                    "%s %s %s",
  58                    __get_str(driver),
  59                    __get_str(device),
  60                    __get_str(msg)
  61            )
  62);
  63
  64#endif /* _NET_BATMAN_ADV_TRACE_H_ || TRACE_HEADER_MULTI_READ */
  65
  66#undef TRACE_INCLUDE_PATH
  67#define TRACE_INCLUDE_PATH .
  68#undef TRACE_INCLUDE_FILE
  69#define TRACE_INCLUDE_FILE trace
  70
  71/* This part must be outside protection */
  72#include <trace/define_trace.h>
  73