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 > 0)
  27                         ret = ui_helpline__show_help(fmt, args);
  28                 else
  29                         ret = vfprintf(stderr, fmt, args);
  30                 va_end(args);
  31         }
  32
  33         return ret;
  34 }
  35
  36 int dump_printf(const char *fmt, ...)
  37 {
  38         va_list args;
  39         int ret = 0;
  40
  41         if (dump_trace) {
  42                 va_start(args, fmt);
  43                 ret = vprintf(fmt, args);
  44                 va_end(args);
  45         }
  46
  47         return ret;
  48 }
  49
  50 #if defined(NO_NEWT_SUPPORT) && defined(NO_GTK2_SUPPORT)
  51 int ui__warning(const char *format, ...)
  52 {
  53         va_list args;
  54
  55         va_start(args, format);
  56         vfprintf(stderr, format, args);
  57         va_end(args);
  58         return 0;
  59 }
  60 #endif
  61
  62 int ui__error_paranoid(void)
  63 {
  64         return ui__error("Permission error - are you root?\n"
  65                     "Consider tweaking /proc/sys/kernel/perf_event_paranoid:\n"
  66                     " -1 - Not paranoid at all\n"
  67                     "  0 - Disallow raw tracepoint access for unpriv\n"
  68                     "  1 - Disallow cpu events for unpriv\n"
  69                     "  2 - Disallow kernel profiling for unpriv\n");
  70 }
  71
  72 void trace_event(union perf_event *event)
  73 {
  74         unsigned char *raw_event = (void *)event;
  75         const char *color = PERF_COLOR_BLUE;
  76         int i, j;
  77
  78         if (!dump_trace)
  79                 return;
  80
  81         printf(".");
  82         color_fprintf(stdout, color, "\n. ... raw event: size %d bytes\n",
  83                       event->header.size);
  84
  85         for (i = 0; i < event->header.size; i++) {
  86                 if ((i & 15) == 0) {
  87                         printf(".");
  88                         color_fprintf(stdout, color, "  %04x: ", i);
  89                 }
  90
  91                 color_fprintf(stdout, color, " %02x", raw_event[i]);
  92
  93                 if (((i & 15) == 15) || i == event->header.size-1) {
  94                         color_fprintf(stdout, color, "  ");
  95                         for (j = 0; j < 15-(i & 15); j++)
  96                                 color_fprintf(stdout, color, "   ");
  97                         for (j = i & ~15; j <= i; j++) {
  98                                 color_fprintf(stdout, color, "%c",
  99                                               isprint(raw_event[j]) ?
 100                                               raw_event[j] : '.');
 101                         }
 102                         color_fprintf(stdout, color, "\n");
 103                 }
 104         }
 105         printf(".\n");
 106 }