linux-kernel - [PATCH v3 1/2] printk: Add a DEPRECATED macro

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Message-Id: <1387297199-14363-2-git-send-email-nhorman@tuxdriver.com>
Date:	Tue, 17 Dec 2013 11:19:58 -0500
From:	Neil Horman <nhorman@...driver.com>
To:	linux-sctp@...r.kernel.org
Cc:	Neil Horman <nhorman@...driver.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"David S. Miller" <davem@...emloft.net>,
	linux-kernel@...r.kernel.org
Subject: [PATCH v3 1/2] printk: Add a DEPRECATED macro

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 <nhorman@...driver.com>
CC: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC: "David S. Miller" <davem@...emloft.net>
CC: linux-kernel@...r.kernel.org

---
Change Notes:

v3)
* Convert to using a string prefix rather than a specific pr_ macro
---
 include/linux/printk.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/include/linux/printk.h b/include/linux/printk.h
index 6949258..26fb95c 100644
--- a/include/linux/printk.h
+++ b/include/linux/printk.h
@@ -88,6 +88,13 @@ 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.
  */
-- 
1.8.3.1

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