From: Stephen Hemminger <shemminger@vyatta.com>
Date: Fri, 21 Mar 2008 22:54:53 +0000 (-0700)
Subject: socket: SOCK_DEBUG type checking
X-Git-Tag: v2.6.26-rc1~1138^2~403
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4cd9029d25f6612302f82634620f107c65f790b1;p=linux-2.6

socket: SOCK_DEBUG type checking

Use the inline trick (same as pr_debug) to get checking of debug
statements even if no code is generated.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/include/net/sock.h b/include/net/sock.h
index 8358fff002..b89680d269 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -70,7 +70,11 @@
 #define SOCK_DEBUG(sk, msg...) do { if ((sk) && sock_flag((sk), SOCK_DBG)) \
 					printk(KERN_DEBUG msg); } while (0)
 #else
-#define SOCK_DEBUG(sk, msg...) do { } while (0)
+/* Validate arguments and do nothing */
+static void inline int __attribute__ ((format (printf, 2, 3)))
+SOCK_DEBUG(struct sock *sk, const char *msg, ...)
+{
+}
 #endif
 
 /* This is the per-socket lock.  The spinlock provides a synchronization