cregit-Linux how code gets into the kernel

Release 4.10 tools/perf/util/debug.c

Directory: tools/perf/util
/* For general debugging purposes */

#include "../perf.h"

#include <string.h>
#include <stdarg.h>
#include <stdio.h>
#include <api/debug.h>
#include <linux/time64.h>

#include "cache.h"
#include "color.h"
#include "event.h"
#include "debug.h"
#include "util.h"
#include "target.h"


int verbose;


bool dump_trace = false, quiet = false;

int debug_ordered_events;

static int redirect_to_stderr;

int debug_data_convert;




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 = vfprintf(stderr, fmt, args);
	}

	return ret;
}


Contributors
PersonTokensPropCommitsCommitProp
frederic weisbeckerfrederic weisbecker3453.97%110.00%


arnaldo carvalho de meloarnaldo carvalho de melo1219.05%440.00%


namhyung kimnamhyung kim812.70%220.00%


jiri olsajiri olsa69.52%220.00%


andi kleenandi kleen34.76%110.00%


Total63100.00%10100.00%






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;
}


Contributors
PersonTokensPropCommitsCommitProp
jiri olsajiri olsa5198.08%266.67%


arnaldo carvalho de meloarnaldo carvalho de melo11.92%133.33%


Total52100.00%3100.00%






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(stderr, "[%13" PRIu64 ".%06" PRIu64 "] ",
		      secs, usecs);
	ret += vfprintf(stderr, fmt, args);
	return ret;
}


Contributors
PersonTokensPropCommitsCommitProp
jiri olsajiri olsa7695.00%133.33%


arnaldo carvalho de meloarnaldo carvalho de melo45.00%266.67%


Total80100.00%3100.00%






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;
}


Contributors
PersonTokensPropCommitsCommitProp
jiri olsajiri olsa6298.41%150.00%


arnaldo carvalho de meloarnaldo carvalho de melo11.59%150.00%


Total63100.00%2100.00%



/*
 * 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");
}


Contributors
PersonTokensPropCommitsCommitProp
jiri olsajiri olsa4697.87%266.67%


arnaldo carvalho de meloarnaldo carvalho de melo12.13%133.33%


Total47100.00%3100.00%






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;
}


Contributors
PersonTokensPropCommitsCommitProp
frederic weisbeckerfrederic weisbecker50100.00%1100.00%


Total50100.00%1100.00%






static void trace_event_printer(enum binary_printer_ops op,
				unsigned int val, void *extra)
{
	const char *color = PERF_COLOR_BLUE;
	union perf_event *event = (union perf_event *)extra;
	unsigned char ch = (unsigned char)val;

	switch (op) {
	case BINARY_PRINT_DATA_BEGIN:
		printf(".");
		color_fprintf(stdout, color, "\n. ... raw event: size %d bytes\n",
				event->header.size);
		break;
	case BINARY_PRINT_LINE_BEGIN:
		printf(".");
		break;
	case BINARY_PRINT_ADDR:
		color_fprintf(stdout, color, "  %04x: ", val);
		break;
	case BINARY_PRINT_NUM_DATA:
		color_fprintf(stdout, color, " %02x", val);
		break;
	case BINARY_PRINT_NUM_PAD:
		color_fprintf(stdout, color, "   ");
		break;
	case BINARY_PRINT_SEP:
		color_fprintf(stdout, color, "  ");
		break;
	case BINARY_PRINT_CHAR_DATA:
		color_fprintf(stdout, color, "%c",
			      isprint(ch) ? ch : '.');
		break;
	case BINARY_PRINT_CHAR_PAD:
		color_fprintf(stdout, color, " ");
		break;
	case BINARY_PRINT_LINE_END:
		color_fprintf(stdout, color, "\n");
		break;
	case BINARY_PRINT_DATA_END:
		printf("\n");
		break;
	default:
		break;
	}
}


Contributors
PersonTokensPropCommitsCommitProp
wang nanwang nan9647.76%125.00%


frederic weisbeckerfrederic weisbecker7235.82%125.00%


arnaldo carvalho de meloarnaldo carvalho de melo2813.93%125.00%


andy isaacsonandy isaacson52.49%125.00%


Total201100.00%4100.00%






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);
}


Contributors
PersonTokensPropCommitsCommitProp
wang nanwang nan4090.91%150.00%


frederic weisbeckerfrederic weisbecker49.09%150.00%


Total44100.00%2100.00%




static struct debug_variable {
	
const char *name;
	
int *ptr;
} 
debug_variables[] = {
	{ .name = "verbose",		.ptr = &verbose },
	{ .name = "ordered-events",	.ptr = &debug_ordered_events},
	{ .name = "stderr",		.ptr = &redirect_to_stderr},
	{ .name = "data-convert",	.ptr = &debug_data_convert },
	{ .name = NULL, }
};




int perf_debug_option(const char *str)
{
	struct debug_variable *var = &debug_variables[0];
	char *vstr, *s = strdup(str);
	int v = 1;

	vstr = strchr(s, '=');
	if (vstr)
		*vstr++ = 0;

	while (var->name) {
		if (!strcmp(s, var->name))
			break;
		var++;
	}

	if (!var->name) {
		pr_err("Unknown debug variable name '%s'\n", s);
		free(s);
		return -1;
	}

	if (vstr) {
		v = atoi(vstr);
		/*
                 * Allow only values in range (0, 10),
                 * otherwise set 0.
                 */
		v = (v < 0) || (v > 10) ? 0 : v;
	}

	*var->ptr = v;
	free(s);
	return 0;
}


Contributors
PersonTokensPropCommitsCommitProp
jiri olsajiri olsa153100.00%1100.00%


Total153100.00%1100.00%




#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)
{
	libapi_set_print(pr_warning_wrapper, pr_warning_wrapper, pr_debug_wrapper);
}

Contributors
PersonTokensPropCommitsCommitProp
jiri olsajiri olsa16100.00%1100.00%


Total16100.00%1100.00%




Overall Contributors
PersonTokensPropCommitsCommitProp
jiri olsajiri olsa50954.67%625.00%


frederic weisbeckerfrederic weisbecker18820.19%312.50%


wang nanwang nan13614.61%14.17%


arnaldo carvalho de meloarnaldo carvalho de melo606.44%833.33%


andi kleenandi kleen202.15%14.17%


namhyung kimnamhyung kim111.18%312.50%


andy isaacsonandy isaacson50.54%14.17%


ian munsieian munsie20.21%14.17%


Total931100.00%24100.00%


Directory: tools/perf/util



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