linux-kernel - [PATCH v7b 15/25] dyndbg: add for_each_boxed

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Message-ID: <20231013224818.3456409-16-jim.cromie@gmail.com>
Date:   Fri, 13 Oct 2023 16:48:07 -0600
From:   Jim Cromie <jim.cromie@...il.com>
To:     linux-kernel@...r.kernel.org, jbaron@...mai.com,
        gregkh@...uxfoundation.org, dri-devel@...ts.freedesktop.org,
        amd-gfx@...ts.freedesktop.org, intel-gvt-dev@...ts.freedesktop.org,
        intel-gfx@...ts.freedesktop.org
Cc:     lb@...ihalf.com, linux@...musvillemoes.dk, joe@...ches.com,
        mcgrof@...nel.org, daniel.vetter@...ll.ch, jani.nikula@...el.com,
        ville.syrjala@...ux.intel.com, seanpaul@...omium.org,
        robdclark@...il.com, groeck@...gle.com, yanivt@...gle.com,
        bleung@...gle.com, linux-doc@...r.kernel.org,
        Jim Cromie <jim.cromie@...il.com>
Subject: [PATCH v7b 15/25] dyndbg: add for_each_boxed_vector

Add a for_each iterator to walk a counted vector member in a struct
(ie the box), and use it to replace 8 open-coded loops.

Signed-off-by: Jim Cromie <jim.cromie@...il.com>
---
v5- parens-on-box-force-precedence
---
 lib/dynamic_debug.c | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c
index be49e104ec76..c11feca70d6f 100644
--- a/lib/dynamic_debug.c
+++ b/lib/dynamic_debug.c
@@ -158,6 +158,9 @@ static void vpr_info_dq(const struct ddebug_query *query, const char *msg)
 		  _dt->num_class_users);				\
 	})
 
+#define for_each_boxed_vector(_box, _vec, _len, _ct, _curs)		\
+	for (_ct = 0, _curs = (_box)->_vec; _ct < (_box)->_len; _ct++, _curs++)
+
 #define __outvar /* filled by callee */
 static struct ddebug_class_map *ddebug_find_valid_class(struct ddebug_table const *dt,
 							const char *class_string,
@@ -167,7 +170,7 @@ static struct ddebug_class_map *ddebug_find_valid_class(struct ddebug_table cons
 	struct ddebug_class_user *cli;
 	int i, idx;
 
-	for (i = 0, map = dt->classes; i < dt->num_classes; i++, map++) {
+	for_each_boxed_vector(dt, classes, num_classes, i, map) {
 		idx = match_string(map->class_names, map->length, class_string);
 		if (idx >= 0) {
 			*class_id = idx + map->base;
@@ -175,7 +178,7 @@ static struct ddebug_class_map *ddebug_find_valid_class(struct ddebug_table cons
 			return map;
 		}
 	}
-	for (i = 0, cli = dt->class_users; i < dt->num_class_users; i++, cli++) {
+	for_each_boxed_vector(dt, class_users, num_class_users, i, cli) {
 		idx = match_string(cli->map->class_names, cli->map->length, class_string);
 		if (idx >= 0) {
 			*class_id = idx + cli->map->base;
@@ -1058,11 +1061,11 @@ static const char *ddebug_class_name(struct ddebug_table *dt, struct _ddebug *dp
 	struct ddebug_class_user *cli = dt->class_users;
 	int i;
 
-	for (i = 0; i < dt->num_classes; i++, map++)
+	for_each_boxed_vector(dt, classes, num_classes, i, map)
 		if (class_in_range(dp->class_id, map))
 			return map->class_names[dp->class_id - map->base];
 
-	for (i = 0; i < dt->num_class_users; i++, cli++)
+	for_each_boxed_vector(dt, class_users, num_class_users, i, cli)
 		if (class_in_range(dp->class_id, cli->map))
 			return cli->map->class_names[dp->class_id - cli->map->base];
 
@@ -1216,7 +1219,7 @@ static void ddebug_attach_module_classes(struct ddebug_table *dt, struct _ddebug
 	struct ddebug_class_map *cm;
 	int i, nc = 0;
 
-	for (i = 0, cm = di->classes; i < di->num_classes; i++, cm++) {
+	for_each_boxed_vector(di, classes, num_classes, i, cm) {
 
 		if (!strcmp(cm->mod_name, dt->mod_name)) {
 			vpr_cm_info(cm, "classes[%d]:", i);
@@ -1230,7 +1233,7 @@ static void ddebug_attach_module_classes(struct ddebug_table *dt, struct _ddebug
 	vpr_info("module:%s attached %d classes\n", dt->mod_name, nc);
 	dt->num_classes = nc;
 
-	for (i = 0, cm = dt->classes; i < dt->num_classes; i++, cm++)
+	for_each_boxed_vector(di, classes, num_classes, i, cm)
 		ddebug_apply_params(cm, cm->mod_name);
 }
 
@@ -1250,7 +1253,7 @@ static void ddebug_attach_user_module_classes(struct ddebug_table *dt,
 	 * module's refs, save to dt.  For loadables, this is the
 	 * whole array.
 	 */
-	for (i = 0, cli = di->class_users; i < di->num_class_users; i++, cli++) {
+	for_each_boxed_vector(di, class_users, num_class_users, i, cli) {
 
 		if (WARN_ON(!cli || !cli->map || !cli->user_mod_name))
 			continue;
@@ -1268,8 +1271,7 @@ static void ddebug_attach_user_module_classes(struct ddebug_table *dt,
 
 	dt->num_class_users = nc;
 
-	/* now iterate dt */
-	for (i = 0, cli = dt->class_users; i < dt->num_class_users; i++, cli++)
+	for_each_boxed_vector(di, class_users, num_class_users, i, cli)
 		ddebug_apply_params(cli->map, cli->user_mod_name);
 
 	vpr_dt_info(dt, "attach-client-module: ");
-- 
2.41.0