forked from Minki/linux
bbb2cea7e8
Adding --debug option as a way to setup debug variables. Starting with support for verbose, more will come. It's possible to use it now with report command: $ perf --debug verbose ... $ perf --debug verbose=2 ... I'll need this support to add separated debug variable for ordered events change in order to separate debug output out of standard verbose stream. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20140717105500.GG516@krava.redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
152 lines
2.6 KiB
C
152 lines
2.6 KiB
C
/* For general debugging purposes */
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#include "../perf.h"
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#include <string.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include "cache.h"
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#include "color.h"
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#include "event.h"
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#include "debug.h"
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#include "util.h"
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#include "target.h"
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int verbose;
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bool dump_trace = false, quiet = false;
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static int _eprintf(int level, int var, const char *fmt, va_list args)
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{
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int ret = 0;
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if (var >= level) {
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if (use_browser >= 1)
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ui_helpline__vshow(fmt, args);
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else
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ret = vfprintf(stderr, fmt, args);
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}
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return ret;
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}
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int eprintf(int level, int var, const char *fmt, ...)
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{
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va_list args;
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int ret;
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va_start(args, fmt);
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ret = _eprintf(level, var, fmt, args);
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va_end(args);
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return ret;
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}
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/*
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* Overloading libtraceevent standard info print
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* function, display with -v in perf.
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*/
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void pr_stat(const char *fmt, ...)
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{
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va_list args;
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va_start(args, fmt);
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_eprintf(1, verbose, fmt, args);
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va_end(args);
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eprintf(1, verbose, "\n");
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}
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int dump_printf(const char *fmt, ...)
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{
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va_list args;
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int ret = 0;
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if (dump_trace) {
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va_start(args, fmt);
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ret = vprintf(fmt, args);
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va_end(args);
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}
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return ret;
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}
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void trace_event(union perf_event *event)
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{
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unsigned char *raw_event = (void *)event;
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const char *color = PERF_COLOR_BLUE;
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int i, j;
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if (!dump_trace)
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return;
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printf(".");
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color_fprintf(stdout, color, "\n. ... raw event: size %d bytes\n",
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event->header.size);
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for (i = 0; i < event->header.size; i++) {
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if ((i & 15) == 0) {
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printf(".");
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color_fprintf(stdout, color, " %04x: ", i);
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}
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color_fprintf(stdout, color, " %02x", raw_event[i]);
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if (((i & 15) == 15) || i == event->header.size-1) {
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color_fprintf(stdout, color, " ");
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for (j = 0; j < 15-(i & 15); j++)
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color_fprintf(stdout, color, " ");
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for (j = i & ~15; j <= i; j++) {
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color_fprintf(stdout, color, "%c",
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isprint(raw_event[j]) ?
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raw_event[j] : '.');
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}
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color_fprintf(stdout, color, "\n");
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}
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}
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printf(".\n");
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}
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static struct debug_variable {
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const char *name;
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int *ptr;
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} debug_variables[] = {
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{ .name = "verbose", .ptr = &verbose },
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{ .name = NULL, }
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};
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int perf_debug_option(const char *str)
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{
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struct debug_variable *var = &debug_variables[0];
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char *vstr, *s = strdup(str);
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int v = 1;
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vstr = strchr(s, '=');
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if (vstr)
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*vstr++ = 0;
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while (var->name) {
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if (!strcmp(s, var->name))
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break;
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var++;
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}
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if (!var->name) {
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pr_err("Unknown debug variable name '%s'\n", s);
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free(s);
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return -1;
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}
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if (vstr) {
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v = atoi(vstr);
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/*
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* Allow only values in range (0, 10),
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* otherwise set 0.
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*/
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v = (v < 0) || (v > 10) ? 0 : v;
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}
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*var->ptr = v;
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free(s);
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return 0;
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}
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