linux-kernel - [PATCH 04/30] dyndbg: reword "class unknown," to "class:_UNKNOWN

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Message-ID: <20250911213823.374806-5-jim.cromie@gmail.com>
Date: Thu, 11 Sep 2025 15:37:57 -0600
From: Jim Cromie <jim.cromie@...il.com>
To: jbaron@...mai.com
Cc: gregkh@...uxfoundation.org,
	ukaszb@...omium.org,
	louis.chauvet@...tlin.com,
	linux-kernel@...r.kernel.org,
	Jim Cromie <jim.cromie@...il.com>
Subject: [PATCH 04/30] dyndbg: reword "class unknown," to "class:_UNKNOWN_"

When a dyndbg classname is unknown to a kernel module (as before
previous patch), the callsite is un-addressable via >control queries.

The control-file displays this condition as "class unknown,"
currently.  That spelling is sub-optimal/too-generic, so change it to
"class:_UNKNOWN_" to loudly announce the erroneous situation, and to
make it uniquely greppable.

Signed-off-by: Jim Cromie <jim.cromie@...il.com>
Reviewed-by: Louis Chauvet <louis.chauvet@...tlin.com>
---
 lib/dynamic_debug.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c
index 5a007952f7f2..147540c57154 100644
--- a/lib/dynamic_debug.c
+++ b/lib/dynamic_debug.c
@@ -1154,7 +1154,7 @@ static int ddebug_proc_show(struct seq_file *m, void *p)
 		if (class)
 			seq_printf(m, " class:%s", class);
 		else
-			seq_printf(m, " class unknown, _id:%d", dp->class_id);
+			seq_printf(m, " class:_UNKNOWN_ _id:%d", dp->class_id);
 	}
 	seq_putc(m, '\n');
 
-- 
2.51.0