Subject: + dynamic_debug-add-wildcard-support-to-filter-files-functions-modules.patch added to -mm tree
To: changbin.du@xxxxxxxxx,jbaron@xxxxxxxxxx,joe@xxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Tue, 19 Nov 2013 15:34:20 -0800
The patch titled
Subject: dynamic_debug: add wildcard support to filter files/functions/modules
has been added to the -mm tree. Its filename is
dynamic_debug-add-wildcard-support-to-filter-files-functions-modules.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/dynamic_debug-add-wildcard-support-to-filter-files-functions-modules.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/dynamic_debug-add-wildcard-support-to-filter-files-functions-modules.patch
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------------------------------------------------------
From: "Du, Changbin" <changbin.du@xxxxxxxxx>
Subject: dynamic_debug: add wildcard support to filter files/functions/modules
Add wildcard '*'(matches zero or more characters) and '?' (matches one
character) support when qurying debug flags.
Now we can open debug messages using keywords. eg:
1. open debug logs in all usb drivers
echo "file drivers/usb/* +p" > <debugfs>/dynamic_debug/control
2. open debug logs for usb xhci code
echo "file *xhci* +p" > <debugfs>/dynamic_debug/control
Signed-off-by: Du, Changbin <changbin.du@xxxxxxxxx>
Cc: Jason Baron <jbaron@xxxxxxxxxx>
Cc: Joe Perches <joe@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/dynamic_debug.c | 15 ++++++++++-----
1 file changed, 10 insertions(+), 5 deletions(-)
diff -puN lib/dynamic_debug.c~dynamic_debug-add-wildcard-support-to-filter-files-functions-modules lib/dynamic_debug.c
--- a/lib/dynamic_debug.c~dynamic_debug-add-wildcard-support-to-filter-files-functions-modules
+++ a/lib/dynamic_debug.c
@@ -8,6 +8,7 @@
* By Greg Banks <gnb@xxxxxxxxxxxxxxxxx>
* Copyright (c) 2008 Silicon Graphics Inc. All Rights Reserved.
* Copyright (C) 2011 Bart Van Assche. All Rights Reserved.
+ * Copyright (C) 2013 Du, Changbin <changbin.du@xxxxxxxxx>
*/
#define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__
@@ -24,6 +25,7 @@
#include <linux/sysctl.h>
#include <linux/ctype.h>
#include <linux/string.h>
+#include <linux/parser.h>
#include <linux/string_helpers.h>
#include <linux/uaccess.h>
#include <linux/dynamic_debug.h>
@@ -147,7 +149,8 @@ static int ddebug_change(const struct dd
list_for_each_entry(dt, &ddebug_tables, link) {
/* match against the module name */
- if (query->module && strcmp(query->module, dt->mod_name))
+ if (query->module &&
+ !match_wildcard(query->module, dt->mod_name))
continue;
for (i = 0; i < dt->num_ddebugs; i++) {
@@ -155,14 +158,16 @@ static int ddebug_change(const struct dd
/* match against the source filename */
if (query->filename &&
- strcmp(query->filename, dp->filename) &&
- strcmp(query->filename, kbasename(dp->filename)) &&
- strcmp(query->filename, trim_prefix(dp->filename)))
+ !match_wildcard(query->filename, dp->filename) &&
+ !match_wildcard(query->filename,
+ kbasename(dp->filename)) &&
+ !match_wildcard(query->filename,
+ trim_prefix(dp->filename)))
continue;
/* match against the function */
if (query->function &&
- strcmp(query->function, dp->function))
+ !match_wildcard(query->function, dp->function))
continue;
/* match against the format */
_
Patches currently in -mm which might be from changbin.du@xxxxxxxxx are
lib-parserc-add-match_wildcard-function.patch
dynamic_debug-add-wildcard-support-to-filter-files-functions-modules.patch
dynamic-debug-howtotxt-update-since-new-wildcard-support.patch
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