perf tools: Add PARSE_OPT_DISABLED flag

In some cases, we need to reuse exising options with some of them
disabled.  To do that, add PARSE_OPT_DISABLED flag and
set_option_flag() function.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Hemant Kumar <hemant@linux.vnet.ibm.com>
Cc: Alexander Yarygin <yarygin@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1413990949-13953-2-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/util/parse-options.c b/tools/perf/util/parse-options.c
index bf48092983c65fe8cec8bb3ff4662e1b1803b18e..b6016101b40b98e3402d9e467c18ab832390907f 100644 (file)
--- a/tools/perf/util/parse-options.c
+++ b/tools/perf/util/parse-options.c
@@ -42,6 +42,8 @@ static int get_value(struct parse_opt_ctx_t *p,
                return opterror(opt, "takes no value", flags);
        if (unset && (opt->flags & PARSE_OPT_NONEG))
                return opterror(opt, "isn't available", flags);
+       if (opt->flags & PARSE_OPT_DISABLED)
+               return opterror(opt, "is not usable", flags);
 
        if (!(flags & OPT_SHORT) && p->opt) {
                switch (opt->type) {
@@ -509,6 +511,8 @@ static void print_option_help(const struct option *opts, int full)
        }
        if (!full && (opts->flags & PARSE_OPT_HIDDEN))
                return;
+       if (opts->flags & PARSE_OPT_DISABLED)
+               return;
 
        pos = fprintf(stderr, "    ");
        if (opts->short_name)
@@ -679,3 +683,16 @@ int parse_opt_verbosity_cb(const struct option *opt,
        }
        return 0;
 }
+
+void set_option_flag(struct option *opts, int shortopt, const char *longopt,
+                    int flag)
+{
+       for (; opts->type != OPTION_END; opts++) {
+               if ((shortopt && opts->short_name == shortopt) ||
+                   (opts->long_name && longopt &&
+                    !strcmp(opts->long_name, longopt))) {
+                       opts->flags |= flag;
+                       break;
+               }
+       }
+}

diff --git a/tools/perf/util/parse-options.h b/tools/perf/util/parse-options.h
index b59ba858e73d6768d58e6e476fb4678b5a9da837..b7c80dbc7627d9310aaad34306b9e52a94a9819a 100644 (file)
--- a/tools/perf/util/parse-options.h
+++ b/tools/perf/util/parse-options.h
@@ -38,6 +38,7 @@ enum parse_opt_option_flags {
        PARSE_OPT_NONEG   = 4,
        PARSE_OPT_HIDDEN  = 8,
        PARSE_OPT_LASTARG_DEFAULT = 16,
+       PARSE_OPT_DISABLED = 32,
 };
 
 struct option;
@@ -211,4 +212,5 @@ extern int parse_opt_verbosity_cb(const struct option *, const char *, int);
 
 extern const char *parse_options_fix_filename(const char *prefix, const char *file);
 
+void set_option_flag(struct option *opts, int sopt, const char *lopt, int flag);
 #endif /* __PERF_PARSE_OPTIONS_H */