linux-kernel - [PATCH v3] lib/dynamic_debug: make better dynamic log output

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Message-ID: <20191211031756.10631-1-sjhuang@iluvatar.ai>
Date:   Wed, 11 Dec 2019 11:17:56 +0800
From:   Huang Shijie <sjhuang@...vatar.ai>
To:     <jbaron@...mai.com>
CC:     <linux-kernel@...r.kernel.org>, <1537577747@...com>,
        Huang Shijie <sjhuang@...vatar.ai>
Subject: [PATCH v3] lib/dynamic_debug: make better dynamic log output

The driver strings, device name and net device name are not changed for
the driver's dynamic log output. But dynamic_emit_prefix() which contains
the function names may change when the function names are changed.

So the patch makes the better dynamic log output.

Signed-off-by: Huang Shijie <sjhuang@...vatar.ai>
---
v2 -- > v3:
	change the net log and ibdev log
---
 lib/dynamic_debug.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c
index c60409138e13..762f718fecd9 100644
--- a/lib/dynamic_debug.c
+++ b/lib/dynamic_debug.c
@@ -589,9 +589,9 @@ void __dynamic_dev_dbg(struct _ddebug *descriptor,
 	} else {
 		char buf[PREFIX_SIZE];
 
-		dev_printk_emit(LOGLEVEL_DEBUG, dev, "%s%s %s: %pV",
-				dynamic_emit_prefix(descriptor, buf),
+		dev_printk_emit(LOGLEVEL_DEBUG, dev, "%s %s %s: %pV",
 				dev_driver_string(dev), dev_name(dev),
+				dynamic_emit_prefix(descriptor, buf),
 				&vaf);
 	}
 
@@ -619,11 +619,11 @@ void __dynamic_netdev_dbg(struct _ddebug *descriptor,
 		char buf[PREFIX_SIZE];
 
 		dev_printk_emit(LOGLEVEL_DEBUG, dev->dev.parent,
-				"%s%s %s %s%s: %pV",
-				dynamic_emit_prefix(descriptor, buf),
+				"%s %s %s %s %s: %pV",
 				dev_driver_string(dev->dev.parent),
 				dev_name(dev->dev.parent),
 				netdev_name(dev), netdev_reg_state(dev),
+				dynamic_emit_prefix(descriptor, buf),
 				&vaf);
 	} else if (dev) {
 		printk(KERN_DEBUG "%s%s: %pV", netdev_name(dev),
@@ -655,11 +655,11 @@ void __dynamic_ibdev_dbg(struct _ddebug *descriptor,
 		char buf[PREFIX_SIZE];
 
 		dev_printk_emit(LOGLEVEL_DEBUG, ibdev->dev.parent,
-				"%s%s %s %s: %pV",
-				dynamic_emit_prefix(descriptor, buf),
+				"%s %s %s %s: %pV",
 				dev_driver_string(ibdev->dev.parent),
 				dev_name(ibdev->dev.parent),
 				dev_name(&ibdev->dev),
+				dynamic_emit_prefix(descriptor, buf),
 				&vaf);
 	} else if (ibdev) {
 		printk(KERN_DEBUG "%s: %pV", dev_name(&ibdev->dev), &vaf);
-- 
2.17.1