From: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Date: Sat, 23 Aug 2008 11:28:27 +0000 (+0200)
Subject: dccp: Toggle debug output without module unloading
X-Git-Tag: v2.6.28-rc1~717^2~391
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=157439fa4a9b38ac4ce41e2fc379fc5031affec8;p=linux-2.6-omap-h63xx.git

dccp: Toggle debug output without module unloading

This sets the sysfs permissions so that root can toggle the `debug'
parameter available for nearly every DCCP module. This is useful
since there are various module inter-dependencies. The debug flag
can now be toggled at runtime using

  echo 1 > /sys/module/dccp/parameters/dccp_debug
  echo 1 > /sys/module/dccp_ccid2/parameters/ccid2_debug
  echo 1 > /sys/module/dccp_ccid3/parameters/ccid3_debug
  echo 1 > /sys/module/dccp_tfrc_lib/parameters/tfrc_debug

The last is not very useful yet, since no code at the moment calls
the tfrc_debug() macro.

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
---

diff --git a/net/dccp/ccids/ccid2.c b/net/dccp/ccids/ccid2.c
index 8e958087421..9a430734530 100644
--- a/net/dccp/ccids/ccid2.c
+++ b/net/dccp/ccids/ccid2.c
@@ -783,7 +783,7 @@ static struct ccid_operations ccid2 = {
 };
 
 #ifdef CONFIG_IP_DCCP_CCID2_DEBUG
-module_param(ccid2_debug, bool, 0444);
+module_param(ccid2_debug, bool, 0644);
 MODULE_PARM_DESC(ccid2_debug, "Enable debug messages");
 #endif
 
diff --git a/net/dccp/ccids/ccid3.c b/net/dccp/ccids/ccid3.c
index f6756e0c9e6..3b8bd7ca676 100644
--- a/net/dccp/ccids/ccid3.c
+++ b/net/dccp/ccids/ccid3.c
@@ -963,7 +963,7 @@ static struct ccid_operations ccid3 = {
 };
 
 #ifdef CONFIG_IP_DCCP_CCID3_DEBUG
-module_param(ccid3_debug, bool, 0444);
+module_param(ccid3_debug, bool, 0644);
 MODULE_PARM_DESC(ccid3_debug, "Enable debug messages");
 #endif
 
diff --git a/net/dccp/ccids/lib/tfrc.c b/net/dccp/ccids/lib/tfrc.c
index 97ecec0a8e7..185916218e0 100644
--- a/net/dccp/ccids/lib/tfrc.c
+++ b/net/dccp/ccids/lib/tfrc.c
@@ -10,7 +10,7 @@
 
 #ifdef CONFIG_IP_DCCP_TFRC_DEBUG
 int tfrc_debug;
-module_param(tfrc_debug, bool, 0444);
+module_param(tfrc_debug, bool, 0644);
 MODULE_PARM_DESC(tfrc_debug, "Enable debug messages");
 #endif
 
diff --git a/net/dccp/proto.c b/net/dccp/proto.c
index ae66473b11f..d0bd3481976 100644
--- a/net/dccp/proto.c
+++ b/net/dccp/proto.c
@@ -1030,7 +1030,7 @@ MODULE_PARM_DESC(thash_entries, "Number of ehash buckets");
 
 #ifdef CONFIG_IP_DCCP_DEBUG
 int dccp_debug;
-module_param(dccp_debug, bool, 0444);
+module_param(dccp_debug, bool, 0644);
 MODULE_PARM_DESC(dccp_debug, "Enable debug messages");
 
 EXPORT_SYMBOL_GPL(dccp_debug);