net/batman-adv/trace.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* Copyright (C) 2010-2020  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
  19 #undef TRACE_SYSTEM
  20 #define TRACE_SYSTEM batadv
  21
  22 /* provide dummy function when tracing is disabled */
  23 #if !defined(CONFIG_BATMAN_ADV_TRACING)
  24
  25 #undef TRACE_EVENT
  26 #define TRACE_EVENT(name, proto, ...) \
  27         static inline void trace_ ## name(proto) {}
  28
  29 #endif /* CONFIG_BATMAN_ADV_TRACING */
  30
  31 #define BATADV_MAX_MSG_LEN      256
  32
  33 TRACE_EVENT(batadv_dbg,
  34
  35             TP_PROTO(struct batadv_priv *bat_priv,
  36                      struct va_format *vaf),
  37
  38             TP_ARGS(bat_priv, vaf),
  39
  40             TP_STRUCT__entry(
  41                     __string(device, bat_priv->soft_iface->name)
  42                     __string(driver, KBUILD_MODNAME)
  43                     __dynamic_array(char, msg, BATADV_MAX_MSG_LEN)
  44             ),
  45
  46             TP_fast_assign(
  47                     __assign_str(device, bat_priv->soft_iface->name);
  48                     __assign_str(driver, KBUILD_MODNAME);
  49                     WARN_ON_ONCE(vsnprintf(__get_dynamic_array(msg),
  50                                            BATADV_MAX_MSG_LEN,
  51                                            vaf->fmt,
  52                                            *vaf->va) >= BATADV_MAX_MSG_LEN);
  53             ),
  54
  55             TP_printk(
  56                     "%s %s %s",
  57                     __get_str(driver),
  58                     __get_str(device),
  59                     __get_str(msg)
  60             )
  61 );
  62
  63 #endif /* _NET_BATMAN_ADV_TRACE_H_ || TRACE_HEADER_MULTI_READ */
  64
  65 #undef TRACE_INCLUDE_PATH
  66 #define TRACE_INCLUDE_PATH .
  67 #undef TRACE_INCLUDE_FILE
  68 #define TRACE_INCLUDE_FILE trace
  69
  70 /* This part must be outside protection */
  71 #include <trace/define_trace.h>