perf record: Use long arg for counter period

I wrote this to test the extended period emulation, we might as
well merge it.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: John Kacur <jkacur@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 16 insertions, 0 deletions

diff --git a/Documentation/perf_counter/util/parse-options.c b/Documentation/perf_counter/util/parse-options.c
index 28b34c1c29cf..b80abd9a99bc 100644
--- a/Documentation/perf_counter/util/parse-options.c
+++ b/Documentation/perf_counter/util/parse-options.c
@@ -113,6 +113,22 @@ static int get_value(struct parse_opt_ctx_t *p,
                         return opterror(opt, "expects a numerical value", flags);
                 return 0;
 
+        case OPTION_LONG:
+                if (unset) {
+                        *(long *)opt->value = 0;
+                        return 0;
+                }
+                if (opt->flags & PARSE_OPT_OPTARG && !p->opt) {
+                        *(long *)opt->value = opt->defval;
+                        return 0;
+                }
+                if (get_arg(p, opt, flags, &arg))
+                        return -1;
+                *(long *)opt->value = strtol(arg, (char **)&s, 10);
+                if (*s)
+                        return opterror(opt, "expects a numerical value", flags);
+                return 0;
+
         default:
                 die("should not happen, someone must be hit on the forehead");
         }