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