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perf tools: Add general function to parse sublevel options

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This factors out a general function perf_parse_sublevel_options() to
parse sublevel options. The 'sublevel' options is something like the
'--debug' options which allow more sublevel options.

Signed-off-by: Changbin Du <changbin.du@gmail.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Link: http://lore.kernel.org/lkml/20200808023141.14227-8-changbin.du@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Changbin Du
2020-08-08 10:31:30 +08:00
committed by Arnaldo Carvalho de Melo
parent 5b34747238
commit a80abe2a9a
4 changed files with 99 additions and 44 deletions
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61
tools/perf/util/debug.c
View File

@@ -20,6 +20,7 @@
#include "target.h"
#include "ui/helpline.h"
#include "ui/ui.h"
#include "util/parse-sublevel-options.h"
#include <linux/ctype.h>
@@ -173,65 +174,37 @@ void trace_event(union perf_event *event)
trace_event_printer, event);
}
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 = "perf-event-open", .ptr = &debug_peo_args },
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 = NULL, }
};
int perf_debug_option(const char *str)
{
struct debug_variable *var = &debug_variables[0];
char *vstr, *s = strdup(str);
int v = 1;
int ret;
vstr = strchr(s, '=');
if (vstr)
*vstr++ = 0;
ret = perf_parse_sublevel_options(str, debug_opts);
if (ret)
return ret;
while (var->name) {
if (!strcmp(s, var->name))
break;
var++;
}
/* Allow only verbose value in range (0, 10), otherwise set 0. */
verbose = (verbose < 0) || (verbose > 10) ? 0 : verbose;
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;
}
if (quiet)
v = -1;
*var->ptr = v;
free(s);
return 0;
}
int perf_quiet_option(void)
{
struct debug_variable *var = &debug_variables[0];
struct sublevel_option *opt = &debug_opts[0];
/* disable all debug messages */
while (var->name) {
*var->ptr = -1;
var++;
while (opt->name) {
*opt->value_ptr = -1;
opt++;
}
return 0;