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[v5,06/33] dyndbg: use ESCAPE_SPACE for cat control

Message ID 20220805215355.3509287-7-jim.cromie@gmail.com
State Accepted
Commit 47ea6f99d06e5a76afffc7f97009081158a9929d
Headers show
Series DYNDBG: opt-in class'd debug for modules, use in drm. | expand

Commit Message

Jim Cromie Aug. 5, 2022, 9:53 p.m. UTC 
`cat control` currently does octal escape, so '\n' becomes "\012".
Change this to display as "\n" instead, which reads much cleaner.

   :#> head -n7 /proc/dynamic_debug/control
   # filename:lineno [module]function flags format
   init/main.c:1179 [main]initcall_blacklist =_ "blacklisting initcall %s\n"
   init/main.c:1218 [main]initcall_blacklisted =_ "initcall %s blacklisted\n"
   init/main.c:1424 [main]run_init_process =_ "  with arguments:\n"
   init/main.c:1426 [main]run_init_process =_ "    %s\n"
   init/main.c:1427 [main]run_init_process =_ "  with environment:\n"
   init/main.c:1429 [main]run_init_process =_ "    %s\n"

Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Acked-by: Jason Baron <jbaron@akamai.com>
---
 lib/dynamic_debug.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c
index 8ff11977b8bd..e5cbe603000c 100644
--- a/lib/dynamic_debug.c
+++ b/lib/dynamic_debug.c
@@ -900,7 +900,7 @@  static int ddebug_proc_show(struct seq_file *m, void *p)
 		   trim_prefix(dp->filename), dp->lineno,
 		   iter->table->mod_name, dp->function,
 		   ddebug_describe_flags(dp->flags, &flags));
-	seq_escape(m, dp->format, "\t\r\n\"");
+	seq_escape_str(m, dp->format, ESCAPE_SPACE, "\t\r\n\"");
 	seq_puts(m, "\"\n");
 
 	return 0;