linux-kernel - [RFC PATCH 08/17] dyndbg: reduce verbose/debug clutter

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Message-Id: <20221206003424.592078-9-jim.cromie@gmail.com>
Date:   Mon,  5 Dec 2022 17:34:15 -0700
From:   Jim Cromie <jim.cromie@...il.com>
To:     linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        amd-gfx@...ts.freedesktop.org, intel-gvt-dev@...ts.freedesktop.org,
        intel-gfx@...ts.freedesktop.org
Cc:     jani.nikula@...el.com, ville.syrjala@...ux.intel.com,
        daniel.vetter@...ll.ch, seanpaul@...omium.org, robdclark@...il.com,
        jbaron@...mai.com, gregkh@...uxfoundation.org,
        Jim Cromie <jim.cromie@...il.com>
Subject: [RFC PATCH 08/17] dyndbg: reduce verbose/debug clutter

currently, for verbose=3, this is logged:

[ 3832.333424] dyndbg: parsed: func="" file="" module="amdgpu" format="" lineno=0-0 class=DRM_UT_PRIME
[ 3832.333888] dyndbg: no matches for query
[ 3832.334093] dyndbg: no-match: func="" file="" module="amdgpu" format="" lineno=0-0 class=DRM_UT_PRIME
[ 3832.334570] dyndbg: processed 1 queries, with 0 matches, 0 errs

This patch removes 2nd & 3rd lines;
 3 differs from 1 only by status
 2 is just status, retold in 4, with more info.

Signed-off-by: Jim Cromie <jim.cromie@...il.com>
---
 lib/dynamic_debug.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c
index a0dc681cd215..445f25ef2461 100644
--- a/lib/dynamic_debug.c
+++ b/lib/dynamic_debug.c
@@ -265,9 +265,6 @@ static int ddebug_change(const struct ddebug_query *query,
 	}
 	mutex_unlock(&ddebug_lock);
 
-	if (!nfound && verbose)
-		pr_info("no matches for query\n");
-
 	return nfound;
 }
 
@@ -536,7 +533,7 @@ static int ddebug_exec_query(char *query_string, const char *modname)
 	struct flag_settings modifiers = {};
 	struct ddebug_query query = {};
 #define MAXWORDS 9
-	int nwords, nfound;
+	int nwords;
 	char *words[MAXWORDS];
 
 	nwords = ddebug_tokenize(query_string, words, MAXWORDS);
@@ -554,10 +551,7 @@ static int ddebug_exec_query(char *query_string, const char *modname)
 		return -EINVAL;
 	}
 	/* actually go and implement the change */
-	nfound = ddebug_change(&query, &modifiers);
-	vpr_info_dq(&query, nfound ? "applied" : "no-match");
-
-	return nfound;
+	return ddebug_change(&query, &modifiers);
 }
 
 /* handle multiple queries in query string, continue on error, return
-- 
2.38.1