tools/perf/util/debug.c

   1 /* For general debugging purposes */
   2
   3 #include "../perf.h"
   4
   5 #include <string.h>
   6 #include <stdarg.h>
   7 #include <stdio.h>
   8
   9 #include "cache.h"
  10 #include "color.h"
  11 #include "event.h"
  12 #include "debug.h"
  13 #include "util.h"
  14 #include "target.h"
  15
  16 int verbose;
  17 bool dump_trace = false, quiet = false;
  18
  19 int eprintf(int level, const char *fmt, ...)
  20 {
  21         va_list args;
  22         int ret = 0;
  23
  24         if (verbose >= level) {
  25                 va_start(args, fmt);
  26                 if (use_browser == 1)
  27                         ret = ui_helpline__show_help(fmt, args);
  28                 else if (use_browser == 2)
  29                         ret = perf_gtk__show_helpline(fmt, args);
  30                 else
  31                         ret = vfprintf(stderr, fmt, args);
  32                 va_end(args);
  33         }
  34
  35         return ret;
  36 }
  37
  38 int dump_printf(const char *fmt, ...)
  39 {
  40         va_list args;
  41         int ret = 0;
  42
  43         if (dump_trace) {
  44                 va_start(args, fmt);
  45                 ret = vprintf(fmt, args);
  46                 va_end(args);
  47         }
  48
  49         return ret;
  50 }
  51
  52 #if !defined(NEWT_SUPPORT) && !defined(GTK2_SUPPORT)
  53 int ui__warning(const char *format, ...)
  54 {
  55         va_list args;
  56
  57         va_start(args, format);
  58         vfprintf(stderr, format, args);
  59         va_end(args);
  60         return 0;
  61 }
  62 #endif
  63
  64 int ui__error_paranoid(void)
  65 {
  66         return ui__error("Permission error - are you root?\n"
  67                     "Consider tweaking /proc/sys/kernel/perf_event_paranoid:\n"
  68                     " -1 - Not paranoid at all\n"
  69                     "  0 - Disallow raw tracepoint access for unpriv\n"
  70                     "  1 - Disallow cpu events for unpriv\n"
  71                     "  2 - Disallow kernel profiling for unpriv\n");
  72 }
  73
  74 void trace_event(union perf_event *event)
  75 {
  76         unsigned char *raw_event = (void *)event;
  77         const char *color = PERF_COLOR_BLUE;
  78         int i, j;
  79
  80         if (!dump_trace)
  81                 return;
  82
  83         printf(".");
  84         color_fprintf(stdout, color, "\n. ... raw event: size %d bytes\n",
  85                       event->header.size);
  86
  87         for (i = 0; i < event->header.size; i++) {
  88                 if ((i & 15) == 0) {
  89                         printf(".");
  90                         color_fprintf(stdout, color, "  %04x: ", i);
  91                 }
  92
  93                 color_fprintf(stdout, color, " %02x", raw_event[i]);
  94
  95                 if (((i & 15) == 15) || i == event->header.size-1) {
  96                         color_fprintf(stdout, color, "  ");
  97                         for (j = 0; j < 15-(i & 15); j++)
  98                                 color_fprintf(stdout, color, "   ");
  99                         for (j = i & ~15; j <= i; j++) {
 100                                 color_fprintf(stdout, color, "%c",
 101                                               isprint(raw_event[j]) ?
 102                                               raw_event[j] : '.');
 103                         }
 104                         color_fprintf(stdout, color, "\n");
 105                 }
 106         }
 107         printf(".\n");
 108 }