Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /* For general debugging purposes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4) #include <inttypes.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5) #include <string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) #include <stdarg.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) #include <stdio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <stdlib.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <sys/wait.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <api/debug.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/time64.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #ifdef HAVE_BACKTRACE_SUPPORT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <execinfo.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include "color.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include "event.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include "debug.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include "print_binary.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include "target.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include "ui/helpline.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include "ui/ui.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include "util/parse-sublevel-options.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #include <linux/ctype.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) int verbose;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) int debug_peo_args;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) bool dump_trace = false, quiet = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) int debug_ordered_events;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) static int redirect_to_stderr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) int debug_data_convert;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) int veprintf(int level, int var, const char *fmt, va_list args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	if (var >= level) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 		if (use_browser >= 1 && !redirect_to_stderr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 			ui_helpline__vshow(fmt, args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 		else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 			ret = vfprintf(stderr, fmt, args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) int eprintf(int level, int var, const char *fmt, ...)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	va_list args;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	va_start(args, fmt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	ret = veprintf(level, var, fmt, args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	va_end(args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) static int veprintf_time(u64 t, const char *fmt, va_list args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	u64 secs, usecs, nsecs = t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	secs   = nsecs / NSEC_PER_SEC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	nsecs -= secs  * NSEC_PER_SEC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	usecs  = nsecs / NSEC_PER_USEC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	ret = fprintf(stderr, "[%13" PRIu64 ".%06" PRIu64 "] ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 		      secs, usecs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	ret += vfprintf(stderr, fmt, args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) int eprintf_time(int level, int var, u64 t, const char *fmt, ...)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	va_list args;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	if (var >= level) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 		va_start(args, fmt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 		ret = veprintf_time(t, fmt, args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 		va_end(args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90)  * Overloading libtraceevent standard info print
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91)  * function, display with -v in perf.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) void pr_stat(const char *fmt, ...)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	va_list args;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	va_start(args, fmt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	veprintf(1, verbose, fmt, args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	va_end(args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	eprintf(1, verbose, "\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) int dump_printf(const char *fmt, ...)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	va_list args;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	if (dump_trace) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 		va_start(args, fmt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 		ret = vprintf(fmt, args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 		va_end(args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) static int trace_event_printer(enum binary_printer_ops op,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 			       unsigned int val, void *extra, FILE *fp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	const char *color = PERF_COLOR_BLUE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	union perf_event *event = (union perf_event *)extra;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	unsigned char ch = (unsigned char)val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	int printed = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	switch (op) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	case BINARY_PRINT_DATA_BEGIN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 		printed += fprintf(fp, ".");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 		printed += color_fprintf(fp, color, "\n. ... raw event: size %d bytes\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 					 event->header.size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	case BINARY_PRINT_LINE_BEGIN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 		printed += fprintf(fp, ".");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	case BINARY_PRINT_ADDR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 		printed += color_fprintf(fp, color, "  %04x: ", val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	case BINARY_PRINT_NUM_DATA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 		printed += color_fprintf(fp, color, " %02x", val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	case BINARY_PRINT_NUM_PAD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 		printed += color_fprintf(fp, color, "   ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	case BINARY_PRINT_SEP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 		printed += color_fprintf(fp, color, "  ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	case BINARY_PRINT_CHAR_DATA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 		printed += color_fprintf(fp, color, "%c",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 			      isprint(ch) && isascii(ch) ? ch : '.');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	case BINARY_PRINT_CHAR_PAD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 		printed += color_fprintf(fp, color, " ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	case BINARY_PRINT_LINE_END:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 		printed += color_fprintf(fp, color, "\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	case BINARY_PRINT_DATA_END:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 		printed += fprintf(fp, "\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	return printed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) void trace_event(union perf_event *event)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	unsigned char *raw_event = (void *)event;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	if (!dump_trace)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	print_binary(raw_event, event->header.size, 16,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 		     trace_event_printer, event);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) static struct sublevel_option debug_opts[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	{ .name = "verbose",		.value_ptr = &verbose },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	{ .name = "ordered-events",	.value_ptr = &debug_ordered_events},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	{ .name = "stderr",		.value_ptr = &redirect_to_stderr},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	{ .name = "data-convert",	.value_ptr = &debug_data_convert },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	{ .name = "perf-event-open",	.value_ptr = &debug_peo_args },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	{ .name = NULL, }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) int perf_debug_option(const char *str)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	ret = perf_parse_sublevel_options(str, debug_opts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	/* Allow only verbose value in range (0, 10), otherwise set 0. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	verbose = (verbose < 0) || (verbose > 10) ? 0 : verbose;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) int perf_quiet_option(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	struct sublevel_option *opt = &debug_opts[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	/* disable all debug messages */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	while (opt->name) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 		*opt->value_ptr = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 		opt++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) #define DEBUG_WRAPPER(__n, __l)				\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) static int pr_ ## __n ## _wrapper(const char *fmt, ...)	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) {							\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	va_list args;					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	int ret;					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 							\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	va_start(args, fmt);				\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	ret = veprintf(__l, verbose, fmt, args);	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	va_end(args);					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	return ret;					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) DEBUG_WRAPPER(warning, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) DEBUG_WRAPPER(debug, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) void perf_debug_setup(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	libapi_set_print(pr_warning_wrapper, pr_warning_wrapper, pr_debug_wrapper);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) /* Obtain a backtrace and print it to stdout. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) #ifdef HAVE_BACKTRACE_SUPPORT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) void dump_stack(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	void *array[16];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	size_t size = backtrace(array, ARRAY_SIZE(array));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	char **strings = backtrace_symbols(array, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	size_t i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	printf("Obtained %zd stack frames.\n", size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	for (i = 0; i < size; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 		printf("%s\n", strings[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	free(strings);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) void dump_stack(void) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) void sighandler_dump_stack(int sig)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	psignal(sig, "perf");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	dump_stack();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	signal(sig, SIG_DFL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 	raise(sig);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) }