From 578b1e0701af34f9ef69daabda4431f1e8501109 Mon Sep 17 00:00:00 2001
From: "Du, Changbin" <changbin.du@gmail.com>
Date: Thu, 23 Jan 2014 15:54:14 -0800
Subject: [PATCH] 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@gmail.com>
Cc: Jason Baron <jbaron@akamai.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
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