drivers/char/ftape/lowlevel/ftape-tracing.c

   1 /*
   2  *      Copyright (C) 1993-1996 Bas Laarhoven,
   3  *                (C) 1996-1997 Claus-Justus Heine.
   4
   5  This program is free software; you can redistribute it and/or modify
   6  it under the terms of the GNU General Public License as published by
   7  the Free Software Foundation; either version 2, or (at your option)
   8  any later version.
   9
  10  This program is distributed in the hope that it will be useful,
  11  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  GNU General Public License for more details.
  14
  15  You should have received a copy of the GNU General Public License
  16  along with this program; see the file COPYING.  If not, write to
  17  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  18
  19  *
  20  * $Source: /homes/cvs/ftape-stacked/ftape/lowlevel/ftape-tracing.c,v $
  21  * $Revision: 1.2 $
  22  * $Date: 1997/10/05 19:18:27 $
  23  *
  24  *      This file contains the reading code
  25  *      for the QIC-117 floppy-tape driver for Linux.
  26  */
  27
  28 #include <linux/ftape.h>
  29 #include "../lowlevel/ftape-tracing.h"
  30
  31 /*      Global vars.
  32  */
  33 /*      tracing
  34  *      set it to:     to log :
  35  *       0              bugs
  36  *       1              + errors
  37  *       2              + warnings
  38  *       3              + information
  39  *       4              + more information
  40  *       5              + program flow
  41  *       6              + fdc/dma info
  42  *       7              + data flow
  43  *       8              + everything else
  44  */
  45 ft_trace_t ftape_tracing = ft_t_info; /* Default level: information and up */
  46 int  ftape_function_nest_level;
  47
  48 /*      Local vars.
  49  */
  50 static __u8 trace_id;
  51 static char spacing[] = "*                              ";
  52
  53 void ftape_trace_call(const char *file, const char *name)
  54 {
  55         char *indent;
  56
  57         /*    Since printk seems not to work with "%*s" format
  58          *    we'll use this work-around.
  59          */
  60         if (ftape_function_nest_level < 0) {
  61                 printk(KERN_INFO "function nest level (%d) < 0\n",
  62                        ftape_function_nest_level);
  63                 ftape_function_nest_level = 0;
  64         }
  65         if (ftape_function_nest_level < sizeof(spacing)) {
  66                 indent = (spacing +
  67                           sizeof(spacing) - 1 -
  68                           ftape_function_nest_level);
  69         } else {
  70                 indent = spacing;
  71         }
  72         printk(KERN_INFO "[%03d]%s+%s (%s)\n",
  73                (int) trace_id++, indent, file, name);
  74 }
  75
  76 void ftape_trace_exit(const char *file, const char *name)
  77 {
  78         char *indent;
  79
  80         /*    Since printk seems not to work with "%*s" format
  81          *    we'll use this work-around.
  82          */
  83         if (ftape_function_nest_level < 0) {
  84                 printk(KERN_INFO "function nest level (%d) < 0\n", ftape_function_nest_level);
  85                 ftape_function_nest_level = 0;
  86         }
  87         if (ftape_function_nest_level < sizeof(spacing)) {
  88                 indent = (spacing +
  89                           sizeof(spacing) - 1 -
  90                           ftape_function_nest_level);
  91         } else {
  92                 indent = spacing;
  93         }
  94         printk(KERN_INFO "[%03d]%s-%s (%s)\n",
  95                (int) trace_id++, indent, file, name);
  96 }
  97
  98 void ftape_trace_log(const char *file, const char *function)
  99 {
 100         char *indent;
 101
 102         /*    Since printk seems not to work with "%*s" format
 103          *    we'll use this work-around.
 104          */
 105         if (ftape_function_nest_level < 0) {
 106                 printk(KERN_INFO "function nest level (%d) < 0\n", ftape_function_nest_level);
 107                 ftape_function_nest_level = 0;
 108         }
 109         if (ftape_function_nest_level < sizeof(spacing)) {
 110                 indent = (spacing +
 111                           sizeof(spacing) - 1 -
 112                           ftape_function_nest_level);
 113         } else {
 114                 indent = spacing;
 115         }
 116         printk(KERN_INFO "[%03d]%s%s (%s) - ",
 117                (int) trace_id++, indent, file, function);
 118 }