Contributors: 16
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Jiri Olsa |
425 |
31.18% |
8 |
14.81% |
| Arnaldo Carvalho de Melo |
283 |
20.76% |
19 |
35.19% |
| Frédéric Weisbecker |
248 |
18.20% |
4 |
7.41% |
| Wang Nan |
102 |
7.48% |
1 |
1.85% |
| Ian Rogers |
95 |
6.97% |
2 |
3.70% |
| Namhyung Kim |
72 |
5.28% |
7 |
12.96% |
| Changbin Du |
31 |
2.27% |
1 |
1.85% |
| Ingo Molnar |
29 |
2.13% |
3 |
5.56% |
| Adrian Hunter |
25 |
1.83% |
2 |
3.70% |
| Andi Kleen |
19 |
1.39% |
1 |
1.85% |
| Ravi Bangoria |
15 |
1.10% |
1 |
1.85% |
| Yang Jihong |
9 |
0.66% |
1 |
1.85% |
| Andy Isaacson |
5 |
0.37% |
1 |
1.85% |
| Ian Munsie |
2 |
0.15% |
1 |
1.85% |
| Irina Tirdea |
2 |
0.15% |
1 |
1.85% |
| Greg Kroah-Hartman |
1 |
0.07% |
1 |
1.85% |
| Total |
1363 |
|
54 |
|
// SPDX-License-Identifier: GPL-2.0
/* For general debugging purposes */
#include <inttypes.h>
#include <string.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/wait.h>
#include <api/debug.h>
#include <linux/kernel.h>
#include <linux/time64.h>
#include <sys/time.h>
#ifdef HAVE_BACKTRACE_SUPPORT
#include <execinfo.h>
#endif
#include "color.h"
#include "event.h"
#include "debug.h"
#include "print_binary.h"
#include "target.h"
#include "trace-event.h"
#include "ui/helpline.h"
#include "ui/ui.h"
#include "util/parse-sublevel-options.h"
#include <linux/ctype.h>
#ifdef HAVE_LIBTRACEEVENT
#include <traceevent/event-parse.h>
#else
#define LIBTRACEEVENT_VERSION 0
#endif
int verbose;
int debug_kmaps;
int debug_peo_args;
bool dump_trace = false, quiet = false;
int debug_ordered_events;
static int redirect_to_stderr;
int debug_data_convert;
static FILE *_debug_file;
bool debug_display_time;
int debug_type_profile;
FILE *debug_file(void)
{
if (!_debug_file) {
pr_warning_once("debug_file not set");
debug_set_file(stderr);
}
return _debug_file;
}
void debug_set_file(FILE *file)
{
_debug_file = file;
}
void debug_set_display_time(bool set)
{
debug_display_time = set;
}
static int fprintf_time(FILE *file)
{
struct timeval tod;
struct tm ltime;
char date[64];
if (!debug_display_time)
return 0;
if (gettimeofday(&tod, NULL) != 0)
return 0;
if (localtime_r(&tod.tv_sec, <ime) == NULL)
return 0;
strftime(date, sizeof(date), "%F %H:%M:%S", <ime);
return fprintf(file, "[%s.%06lu] ", date, (long)tod.tv_usec);
}
int veprintf(int level, int var, const char *fmt, va_list args)
{
int ret = 0;
if (var >= level) {
if (use_browser >= 1 && !redirect_to_stderr) {
ui_helpline__vshow(fmt, args);
} else {
ret = fprintf_time(debug_file());
ret += vfprintf(debug_file(), fmt, args);
}
}
return ret;
}
int eprintf(int level, int var, const char *fmt, ...)
{
va_list args;
int ret;
va_start(args, fmt);
ret = veprintf(level, var, fmt, args);
va_end(args);
return ret;
}
static int veprintf_time(u64 t, const char *fmt, va_list args)
{
int ret = 0;
u64 secs, usecs, nsecs = t;
secs = nsecs / NSEC_PER_SEC;
nsecs -= secs * NSEC_PER_SEC;
usecs = nsecs / NSEC_PER_USEC;
ret = fprintf(debug_file(), "[%13" PRIu64 ".%06" PRIu64 "] ", secs, usecs);
ret += vfprintf(debug_file(), fmt, args);
return ret;
}
int eprintf_time(int level, int var, u64 t, const char *fmt, ...)
{
int ret = 0;
va_list args;
if (var >= level) {
va_start(args, fmt);
ret = veprintf_time(t, fmt, args);
va_end(args);
}
return ret;
}
/*
* Overloading libtraceevent standard info print
* function, display with -v in perf.
*/
void pr_stat(const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
veprintf(1, verbose, fmt, args);
va_end(args);
eprintf(1, verbose, "\n");
}
int dump_printf(const char *fmt, ...)
{
va_list args;
int ret = 0;
if (dump_trace) {
va_start(args, fmt);
ret = vprintf(fmt, args);
va_end(args);
}
return ret;
}
static int trace_event_printer(enum binary_printer_ops op,
unsigned int val, void *extra, FILE *fp)
{
const char *color = PERF_COLOR_BLUE;
union perf_event *event = (union perf_event *)extra;
unsigned char ch = (unsigned char)val;
int printed = 0;
switch (op) {
case BINARY_PRINT_DATA_BEGIN:
printed += fprintf(fp, ".");
printed += color_fprintf(fp, color, "\n. ... raw event: size %d bytes\n",
event->header.size);
break;
case BINARY_PRINT_LINE_BEGIN:
printed += fprintf(fp, ".");
break;
case BINARY_PRINT_ADDR:
printed += color_fprintf(fp, color, " %04x: ", val);
break;
case BINARY_PRINT_NUM_DATA:
printed += color_fprintf(fp, color, " %02x", val);
break;
case BINARY_PRINT_NUM_PAD:
printed += color_fprintf(fp, color, " ");
break;
case BINARY_PRINT_SEP:
printed += color_fprintf(fp, color, " ");
break;
case BINARY_PRINT_CHAR_DATA:
printed += color_fprintf(fp, color, "%c",
isprint(ch) && isascii(ch) ? ch : '.');
break;
case BINARY_PRINT_CHAR_PAD:
printed += color_fprintf(fp, color, " ");
break;
case BINARY_PRINT_LINE_END:
printed += color_fprintf(fp, color, "\n");
break;
case BINARY_PRINT_DATA_END:
printed += fprintf(fp, "\n");
break;
default:
break;
}
return printed;
}
void trace_event(union perf_event *event)
{
unsigned char *raw_event = (void *)event;
if (!dump_trace)
return;
print_binary(raw_event, event->header.size, 16,
trace_event_printer, event);
}
static struct sublevel_option debug_opts[] = {
{ .name = "verbose", .value_ptr = &verbose },
{ .name = "ordered-events", .value_ptr = &debug_ordered_events},
{ .name = "stderr", .value_ptr = &redirect_to_stderr},
{ .name = "data-convert", .value_ptr = &debug_data_convert },
{ .name = "perf-event-open", .value_ptr = &debug_peo_args },
{ .name = "kmaps", .value_ptr = &debug_kmaps },
{ .name = "type-profile", .value_ptr = &debug_type_profile },
{ .name = NULL, }
};
int perf_debug_option(const char *str)
{
int ret;
ret = perf_parse_sublevel_options(str, debug_opts);
if (ret)
return ret;
/* Allow only verbose value in range (0, 10), otherwise set 0. */
verbose = (verbose < 0) || (verbose > 10) ? 0 : verbose;
#if LIBTRACEEVENT_VERSION >= MAKE_LIBTRACEEVENT_VERSION(1, 3, 0)
if (verbose == 1)
tep_set_loglevel(TEP_LOG_INFO);
else if (verbose == 2)
tep_set_loglevel(TEP_LOG_DEBUG);
else if (verbose >= 3)
tep_set_loglevel(TEP_LOG_ALL);
#endif
return 0;
}
int perf_quiet_option(void)
{
struct sublevel_option *opt = &debug_opts[0];
/* disable all debug messages */
while (opt->name) {
*opt->value_ptr = -1;
opt++;
}
/* For debug variables that are used as bool types, set to 0. */
redirect_to_stderr = 0;
debug_peo_args = 0;
debug_kmaps = 0;
debug_type_profile = 0;
return 0;
}
#define DEBUG_WRAPPER(__n, __l) \
static int pr_ ## __n ## _wrapper(const char *fmt, ...) \
{ \
va_list args; \
int ret; \
\
va_start(args, fmt); \
ret = veprintf(__l, verbose, fmt, args); \
va_end(args); \
return ret; \
}
DEBUG_WRAPPER(warning, 0);
DEBUG_WRAPPER(debug, 1);
void perf_debug_setup(void)
{
debug_set_file(stderr);
libapi_set_print(pr_warning_wrapper, pr_warning_wrapper, pr_debug_wrapper);
}
/* Obtain a backtrace and print it to stdout. */
#ifdef HAVE_BACKTRACE_SUPPORT
void dump_stack(void)
{
void *array[16];
size_t size = backtrace(array, ARRAY_SIZE(array));
char **strings = backtrace_symbols(array, size);
size_t i;
printf("Obtained %zd stack frames.\n", size);
for (i = 0; i < size; i++)
printf("%s\n", strings[i]);
free(strings);
}
#else
void dump_stack(void) {}
#endif
void sighandler_dump_stack(int sig)
{
psignal(sig, "perf");
dump_stack();
signal(sig, SIG_DFL);
raise(sig);
}