linux-kernel - [PATCH 1/3] perf options: Introduce OPT

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Message-Id: <1274111278-2838-2-git-send-email-acme@infradead.org>
Date:	Mon, 17 May 2010 12:47:56 -0300
From:	Arnaldo Carvalho de Melo <acme@...radead.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	linux-kernel@...r.kernel.org,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Frédéric Weisbecker <fweisbec@...il.com>,
	Mike Galbraith <efault@....de>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Stephane Eranian <eranian@...gle.com>,
	Tom Zanussi <tzanussi@...il.com>
Subject: [PATCH 1/3] perf options: Introduce OPT_U64

From: Arnaldo Carvalho de Melo <acme@...hat.com>

We have things like user_interval (-c/--count) in 'perf record' that
needs this.

Cc: Frédéric Weisbecker <fweisbec@...il.com>
Cc: Mike Galbraith <efault@....de>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Stephane Eranian <eranian@...gle.com>
Cc: Tom Zanussi <tzanussi@...il.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/parse-options.c |   18 ++++++++++++++++++
 tools/perf/util/parse-options.h |    2 ++
 2 files changed, 20 insertions(+), 0 deletions(-)

diff --git a/tools/perf/util/parse-options.c b/tools/perf/util/parse-options.c
index ed88764..b05d51d 100644
--- a/tools/perf/util/parse-options.c
+++ b/tools/perf/util/parse-options.c
@@ -60,6 +60,7 @@ static int get_value(struct parse_opt_ctx_t *p,
 		case OPTION_STRING:
 		case OPTION_INTEGER:
 		case OPTION_LONG:
+		case OPTION_U64:
 		default:
 			break;
 		}
@@ -141,6 +142,22 @@ static int get_value(struct parse_opt_ctx_t *p,
 			return opterror(opt, "expects a numerical value", flags);
 		return 0;
 
+	case OPTION_U64:
+		if (unset) {
+			*(u64 *)opt->value = 0;
+			return 0;
+		}
+		if (opt->flags & PARSE_OPT_OPTARG && !p->opt) {
+			*(u64 *)opt->value = opt->defval;
+			return 0;
+		}
+		if (get_arg(p, opt, flags, &arg))
+			return -1;
+		*(u64 *)opt->value = strtoull(arg, (char **)&s, 10);
+		if (*s)
+			return opterror(opt, "expects a numerical value", flags);
+		return 0;
+
 	case OPTION_END:
 	case OPTION_ARGUMENT:
 	case OPTION_GROUP:
@@ -487,6 +504,7 @@ int usage_with_options_internal(const char * const *usagestr,
 		case OPTION_SET_INT:
 		case OPTION_SET_PTR:
 		case OPTION_LONG:
+		case OPTION_U64:
 			break;
 		}
 
diff --git a/tools/perf/util/parse-options.h b/tools/perf/util/parse-options.h
index b2da725..e301e96 100644
--- a/tools/perf/util/parse-options.h
+++ b/tools/perf/util/parse-options.h
@@ -17,6 +17,7 @@ enum parse_opt_type {
 	OPTION_INTEGER,
 	OPTION_LONG,
 	OPTION_CALLBACK,
+	OPTION_U64,
 };
 
 enum parse_opt_flags {
@@ -101,6 +102,7 @@ struct option {
 #define OPT_SET_PTR(s, l, v, h, p)  { .type = OPTION_SET_PTR, .short_name = (s), .long_name = (l), .value = (v), .help = (h), .defval = (p) }
 #define OPT_INTEGER(s, l, v, h)     { .type = OPTION_INTEGER, .short_name = (s), .long_name = (l), .value = (v), .help = (h) }
 #define OPT_LONG(s, l, v, h)        { .type = OPTION_LONG, .short_name = (s), .long_name = (l), .value = (v), .help = (h) }
+#define OPT_U64(s, l, v, h)         { .type = OPTION_U64, .short_name = (s), .long_name = (l), .value = (v), .help = (h) }
 #define OPT_STRING(s, l, v, a, h)   { .type = OPTION_STRING,  .short_name = (s), .long_name = (l), .value = (v), (a), .help = (h) }
 #define OPT_DATE(s, l, v, h) \
 	{ .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l), .value = (v), .argh = "time", .help = (h), .callback = parse_opt_approxidate_cb }
-- 
1.6.2.5

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