Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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
15int verbose;
16bool dump_trace = false, quiet = false;
17
18int 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
35int 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
50void 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}
58#endif
59
60void ui__warning_paranoid(void)
61{
62 ui__warning("Permission error - are you root?\n"
63 "Consider tweaking /proc/sys/kernel/perf_event_paranoid:\n"
64 " -1 - Not paranoid at all\n"
65 " 0 - Disallow raw tracepoint access for unpriv\n"
66 " 1 - Disallow cpu events for unpriv\n"
67 " 2 - Disallow kernel profiling for unpriv\n");
68}
69
70void trace_event(union perf_event *event)
71{
72 unsigned char *raw_event = (void *)event;
73 const char *color = PERF_COLOR_BLUE;
74 int i, j;
75
76 if (!dump_trace)
77 return;
78
79 printf(".");
80 color_fprintf(stdout, color, "\n. ... raw event: size %d bytes\n",
81 event->header.size);
82
83 for (i = 0; i < event->header.size; i++) {
84 if ((i & 15) == 0) {
85 printf(".");
86 color_fprintf(stdout, color, " %04x: ", i);
87 }
88
89 color_fprintf(stdout, color, " %02x", raw_event[i]);
90
91 if (((i & 15) == 15) || i == event->header.size-1) {
92 color_fprintf(stdout, color, " ");
93 for (j = 0; j < 15-(i & 15); j++)
94 color_fprintf(stdout, color, " ");
95 for (j = i & ~15; j <= i; j++) {
96 color_fprintf(stdout, color, "%c",
97 isprint(raw_event[j]) ?
98 raw_event[j] : '.');
99 }
100 color_fprintf(stdout, color, "\n");
101 }
102 }
103 printf(".\n");
104}