printk: Add a DEPRECATED macro

nhorman · davem330 · commit 0a9a8bfd29aa · 2013-12-31T13:58:40.000-05:00
sctp has several points in its setsockopt path in which it issues deprecation
warnings.  It seems like it might be handy to macrotize such a warning so other
subsystems can use it easily

Signed-off-by: Neil Horman &lt;nhorman@tuxdriver.com&gt;
CC: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
CC: "David S. Miller" &lt;davem@davemloft.net&gt;
CC: linux-kernel@vger.kernel.org
CC: netdev@vger.kernel.org
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
diff --git a/include/linux/printk.h b/include/linux/printk.h
@@ -87,6 +87,13 @@ struct va_format {
  */
 #define HW_ERR		"[Hardware Error]: "
 
+/*
+ * DEPRECATED
+ * Add this to a message whenever you want to warn user space about the use
+ * of a deprecated aspect of an API so they can stop using it
+ */
+#define DEPRECATED	"[Deprecated]: "
+
 /*
  * Dummy printk for disabled debugging statements to use whilst maintaining
  * gcc's format and side-effect checking.
