drivers/infiniband/hw/hfi1/trace_dbg.h

   1 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
   2 /*
   3 * Copyright(c) 2015 - 2018 Intel Corporation.
   4 */
   5
   6 #if !defined(__HFI1_TRACE_EXTRA_H) || defined(TRACE_HEADER_MULTI_READ)
   7 #define __HFI1_TRACE_EXTRA_H
   8
   9 #include <linux/tracepoint.h>
  10 #include <linux/trace_seq.h>
  11
  12 #include "hfi.h"
  13
  14 /*
  15  * Note:
  16  * This produces a REALLY ugly trace in the console output when the string is
  17  * too long.
  18  */
  19
  20 #undef TRACE_SYSTEM
  21 #define TRACE_SYSTEM hfi1_dbg
  22
  23 #define MAX_MSG_LEN 512
  24
  25 #pragma GCC diagnostic push
  26 #ifndef __clang__
  27 #pragma GCC diagnostic ignored "-Wsuggest-attribute=format"
  28 #endif
  29
  30 DECLARE_EVENT_CLASS(hfi1_trace_template,
  31                     TP_PROTO(const char *function, struct va_format *vaf),
  32                     TP_ARGS(function, vaf),
  33                     TP_STRUCT__entry(__string(function, function)
  34                                      __vstring(msg, vaf->fmt, vaf->va)
  35                                      ),
  36                     TP_fast_assign(__assign_str(function);
  37                                    __assign_vstr(msg, vaf->fmt, vaf->va);
  38                                    ),
  39                     TP_printk("(%s) %s",
  40                               __get_str(function),
  41                               __get_str(msg))
  42 );
  43
  44 #pragma GCC diagnostic pop
  45
  46 /*
  47  * It may be nice to macroize the __hfi1_trace but the va_* stuff requires an
  48  * actual function to work and can not be in a macro.
  49  */
  50 #define __hfi1_trace_def(lvl) \
  51 void __printf(2, 3) __hfi1_trace_##lvl(const char *funct, char *fmt, ...); \
  52                                                                         \
  53 DEFINE_EVENT(hfi1_trace_template, hfi1_ ##lvl,                          \
  54         TP_PROTO(const char *function, struct va_format *vaf),          \
  55         TP_ARGS(function, vaf))
  56
  57 #define __hfi1_trace_fn(lvl) \
  58 void __printf(2, 3) __hfi1_trace_##lvl(const char *func, char *fmt, ...)\
  59 {                                                                       \
  60         struct va_format vaf = {                                        \
  61                 .fmt = fmt,                                             \
  62         };                                                              \
  63         va_list args;                                                   \
  64                                                                         \
  65         va_start(args, fmt);                                            \
  66         vaf.va = &args;                                                 \
  67         trace_hfi1_ ##lvl(func, &vaf);                                  \
  68         va_end(args);                                                   \
  69         return;                                                         \
  70 }
  71
  72 /*
  73  * To create a new trace level simply define it below and as a __hfi1_trace_fn
  74  * in trace.c. This will create all the hooks for calling
  75  * hfi1_cdbg(LVL, fmt, ...); as well as take care of all
  76  * the debugfs stuff.
  77  */
  78 __hfi1_trace_def(AFFINITY);
  79 __hfi1_trace_def(PKT);
  80 __hfi1_trace_def(PROC);
  81 __hfi1_trace_def(SDMA);
  82 __hfi1_trace_def(LINKVERB);
  83 __hfi1_trace_def(DEBUG);
  84 __hfi1_trace_def(SNOOP);
  85 __hfi1_trace_def(CNTR);
  86 __hfi1_trace_def(PIO);
  87 __hfi1_trace_def(DC8051);
  88 __hfi1_trace_def(FIRMWARE);
  89 __hfi1_trace_def(RCVCTRL);
  90 __hfi1_trace_def(TID);
  91 __hfi1_trace_def(MMU);
  92 __hfi1_trace_def(IOCTL);
  93
  94 #define hfi1_cdbg(which, fmt, ...) \
  95         __hfi1_trace_##which(__func__, fmt, ##__VA_ARGS__)
  96
  97 #define hfi1_dbg(fmt, ...) \
  98         hfi1_cdbg(DEBUG, fmt, ##__VA_ARGS__)
  99
 100 /*
 101  * Define HFI1_EARLY_DBG at compile time or here to enable early trace
 102  * messages. Do not check in an enablement for this.
 103  */
 104
 105 #ifdef HFI1_EARLY_DBG
 106 #define hfi1_dbg_early(fmt, ...) \
 107         trace_printk(fmt, ##__VA_ARGS__)
 108 #else
 109 #define hfi1_dbg_early(fmt, ...)
 110 #endif
 111
 112 #endif /* __HFI1_TRACE_EXTRA_H */
 113
 114 #undef TRACE_INCLUDE_PATH
 115 #undef TRACE_INCLUDE_FILE
 116 #define TRACE_INCLUDE_PATH .
 117 #define TRACE_INCLUDE_FILE trace_dbg
 118 #include <trace/define_trace.h>