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 #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
  34 TRACE_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>