include/trace/events/printk.h

   1 #undef TRACE_SYSTEM
   2 #define TRACE_SYSTEM printk
   3
   4 #if !defined(_TRACE_PRINTK_H) || defined(TRACE_HEADER_MULTI_READ)
   5 #define _TRACE_PRINTK_H
   6
   7 #include <linux/tracepoint.h>
   8
   9 TRACE_EVENT(console,
  10         TP_PROTO(const char *text, size_t len),
  11
  12         TP_ARGS(text, len),
  13
  14         TP_STRUCT__entry(
  15                 __dynamic_array(char, msg, len + 1)
  16         ),
  17
  18         TP_fast_assign(
  19                 /*
  20                  * Each trace entry is printed in a new line.
  21                  * If the msg finishes with '\n', cut it off
  22                  * to avoid blank lines in the trace.
  23                  */
  24                 if ((len > 0) && (text[len-1] == '\n'))
  25                         len -= 1;
  26
  27                 memcpy(__get_str(msg), text, len);
  28                 __get_str(msg)[len] = 0;
  29         ),
  30
  31         TP_printk("%s", __get_str(msg))
  32 );
  33 #endif /* _TRACE_PRINTK_H */
  34
  35 /* This part must be outside protection */
  36 #include <trace/define_trace.h>