Add initial support for profile specific options

Not complete yet, we need to split option parsing for profiles a
bit.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/options.c b/options.c
index 03b2437..2f38b4a 100644
--- a/options.c
+++ b/options.c
@@ -1959,7 +1959,7 @@
 
 int fio_show_option_help(const char *opt)
 {
-	return show_cmd_help(options, opt);
+	return show_cmd_help(options, &ext_opt_list, opt);
 }
 
 static void __options_mem(struct thread_data *td, int alloc)
@@ -2019,3 +2019,17 @@
 	option_init(&eopt->o);
 	flist_add_tail(&eopt->list, &ext_opt_list);
 }
+
+void prune_profile_options(const char *prof_name)
+{
+	struct ext_option *eo;
+	struct flist_head *n, *tmp;
+
+	flist_for_each_safe(n, tmp, &ext_opt_list) {
+		eo = flist_entry(n, struct ext_option, list);
+		if (strcmp(eo->prof_name, prof_name))
+			continue;
+		flist_del(&eo->list);
+		free(eo);
+	}
+}
diff --git a/options.h b/options.h
index 29bb7a1..96c81a1 100644
--- a/options.h
+++ b/options.h
@@ -8,9 +8,11 @@
 
 struct ext_option {
 	struct flist_head list;
+	const char *prof_name;
 	struct fio_option o;
 };
 
-void register_option(struct ext_option *);
+void register_ext_option(struct ext_option *);
+void prune_profile_options(const char *);
 
 #endif
diff --git a/parse.c b/parse.c
index 2cdac54..9c0965f 100644
--- a/parse.c
+++ b/parse.c
@@ -852,8 +852,11 @@
 	} while (printed);
 }
 
-int show_cmd_help(struct fio_option *options, const char *name)
+int show_cmd_help(struct fio_option *options, struct flist_head *ext_opts,
+		  const char *name)
 {
+	struct flist_head *n;
+	struct ext_option *eo;
 	struct fio_option *o, *closest;
 	unsigned int best_dist;
 	int found = 0;
@@ -905,6 +908,18 @@
 	if (found)
 		return 0;
 
+	flist_for_each(n, ext_opts) {
+		eo = flist_entry(n, struct ext_option, list);
+		o = &eo->o;
+		if (!strcmp(name, o->name) ||
+		    (o->alias && !strcmp(name, o->alias))) {
+			printf("%20s: %s\n", o->name, o->help);
+			show_option_help(o, stdout);
+			printf("%20s: External, valid for '%s'\n", "Restriction", eo->prof_name);
+			return 0;
+		}
+	}
+
 	printf("No such command: %s", name);
 	if (closest) {
 		printf(" - showing closest match\n");
@@ -942,13 +957,14 @@
 		fprintf(stderr, "Option %s: string set option with"
 				" default will always be true\n", o->name);
 	}
-	if (!o->cb && !o->off1) {
+	if (!o->cb && (!o->off1 && !o->roff1)) {
 		fprintf(stderr, "Option %s: neither cb nor offset given\n",
 							o->name);
 	}
 	if (o->type == FIO_OPT_STR || o->type == FIO_OPT_STR_STORE)
 		return;
-	if (o->cb && (o->off1 || o->off2 || o->off3 || o->off4)) {
+	if (o->cb && ((o->off1 || o->off2 || o->off3 || o->off4) ||
+		      (o->roff1 || o->roff2 || o->roff3 || o->roff4))) {
 		fprintf(stderr, "Option %s: both cb and offset given\n",
 							 o->name);
 	}
diff --git a/parse.h b/parse.h
index 95d99f5..5f602a3 100644
--- a/parse.h
+++ b/parse.h
@@ -59,7 +59,7 @@
 extern int parse_option(const char *, struct fio_option *, struct flist_head *, void *);
 extern void sort_options(char **, struct fio_option *, int);
 extern int parse_cmd_option(const char *t, const char *l, struct fio_option *, struct flist_head *, void *);
-extern int show_cmd_help(struct fio_option *, const char *);
+extern int show_cmd_help(struct fio_option *, struct flist_head *, const char *);
 extern void fill_default_options(void *, struct fio_option *);
 extern void option_init(struct fio_option *);
 extern void options_init(struct fio_option *);
diff --git a/profile.c b/profile.c
index e56ca29..9f588a1 100644
--- a/profile.c
+++ b/profile.c
@@ -2,6 +2,7 @@
 #include "profile.h"
 #include "debug.h"
 #include "flist.h"
+#include "options.h"
 
 static FLIST_HEAD(profile_list);
 
@@ -29,14 +30,34 @@
 	return 1;
 }
 
+static void add_profile_options(struct profile_ops *ops)
+{
+	struct fio_option *fo;
+	struct ext_option *eo;
+	
+	if (!ops->options)
+		return;
+
+	fo = ops->options;
+	while (fo->name) {
+		eo = malloc(sizeof(*eo));
+		eo->prof_name = ops->name;
+		memcpy(&eo->o, fo, sizeof(*fo));
+		register_ext_option(eo);
+		fo++;
+	}
+}
+
 void register_profile(struct profile_ops *ops)
 {
 	dprint(FD_PROFILE, "register profile '%s'\n", ops->name);
 	flist_add_tail(&ops->list, &profile_list);
+	add_profile_options(ops);
 }
 
 void unregister_profile(struct profile_ops *ops)
 {
 	dprint(FD_PROFILE, "unregister profile '%s'\n", ops->name);
 	flist_del(&ops->list);
+	prune_profile_options(ops->name);
 }
diff --git a/profile.h b/profile.h
index 6b19606..5268d4a 100644
--- a/profile.h
+++ b/profile.h
@@ -12,6 +12,7 @@
 	int flags;
 
 	const char **def_ops;
+	struct fio_option *options;
 };
 
 void register_profile(struct profile_ops *);
diff --git a/profiles/tiobench.c b/profiles/tiobench.c
index d239468..873be99 100644
--- a/profiles/tiobench.c
+++ b/profiles/tiobench.c
@@ -1,5 +1,11 @@
 #include "../fio.h"
 #include "../profile.h"
+#include "../parse.h"
+
+static unsigned long size;
+static unsigned long loops;
+static unsigned long bs;
+static char *dir;
 
 static const char *tb_opts[] = {
 	"buffered=0", "size=4*1024*$mb_memory", "bs=4k", "timeout=600",
@@ -11,10 +17,42 @@
 	"name=randread", "stonewall", "rw=randread", NULL,
 };
 
+static struct fio_option options[] = {
+	{
+		.name	= "size",
+		.type	= FIO_OPT_INT,
+		.roff1	= &size,
+		.help	= "Size in MB",
+	},
+	{
+		.name	= "block",
+		.type	= FIO_OPT_INT,
+		.roff1	= &bs,
+		.help	= "Block size in bytes",
+		.def	= "4k",
+	},
+	{
+		.name	= "numruns",
+		.type	= FIO_OPT_INT,
+		.roff1	= &loops,
+		.help	= "Number of runs",
+	},
+	{
+		.name	= "dir",
+		.type	= FIO_OPT_STR_STORE,
+		.roff1	= &dir,
+		.help	= "Test directory",
+	},
+	{
+		.name	= NULL,
+	},
+};
+
 static struct profile_ops tiobench_profile = {
 	.name		= "tiobench",
 	.version	= FIO_PROFILE_VERSION,
 	.def_ops	= tb_opts,
+	.options	= options,
 };
 
 static void fio_init tiobench_register(void)