linux-kernel - [PATCH 3/3] dyndbg: no vpr-info on empty queries

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Message-Id: <20211013220726.1280565-4-jim.cromie@gmail.com>
Date:   Wed, 13 Oct 2021 16:07:26 -0600
From:   Jim Cromie <jim.cromie@...il.com>
To:     jbaron@...mai.com, gregkh@...uxfoundation.org,
        linux-kernel@...r.kernel.org
Cc:     Jim Cromie <jim.cromie@...il.com>
Subject: [PATCH 3/3] dyndbg: no vpr-info on empty queries

when `echo $cmd > control` contains multiple queries, extra query
separators (;\n) can parse as empty statements.  This is normal, and a
vpr-info on an empty command is just noise.

Signed-off-by: Jim Cromie <jim.cromie@...il.com>
---
 lib/dynamic_debug.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c
index bc1ac55ac328..7744c787e256 100644
--- a/lib/dynamic_debug.c
+++ b/lib/dynamic_debug.c
@@ -540,8 +540,10 @@ static int ddebug_exec_queries(char *query, const char *modname)
 		}
 		i++;
 	}
-	vpr_info("processed %d queries, with %d matches, %d errs\n",
-		 i, nfound, errs);
+
+	if (i)
+		vpr_info("processed %d queries, with %d matches, %d errs\n",
+			 i, nfound, errs);
 
 	if (exitcode)
 		return exitcode;
-- 
2.31.1