linux-kernel - [PATCH 1/3] lib/vsprintf: Document %p parameters passed by reference

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Date:	Thu, 26 Feb 2015 12:13:01 +0100
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Jonathan Corbet <corbet@....net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Mike Turquette <mturquette@...aro.org>,
	Stephen Boyd <sboyd@...eaurora.org>
Cc:	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
	Geert Uytterhoeven <geert+renesas@...der.be>
Subject: [PATCH 1/3] lib/vsprintf: Document %p parameters passed by reference

From: Geert Uytterhoeven <geert+renesas@...der.be>

Make sure all %p extensions that take parameters by references are
documented to do so.

Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
---
This has been sent before as a separate patch, and was updated for the
addition of %pT.

 Documentation/printk-formats.txt | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/Documentation/printk-formats.txt b/Documentation/printk-formats.txt
index 8858db8f8805bce7..06c8332f0cc09238 100644
--- a/Documentation/printk-formats.txt
+++ b/Documentation/printk-formats.txt
@@ -54,6 +54,7 @@ Struct Resources:
 
 	For printing struct resources. The 'R' and 'r' specifiers result in a
 	printed resource with ('R') or without ('r') a decoded flags member.
+	Passed by reference.
 
 Physical addresses types phys_addr_t:
 
@@ -132,6 +133,8 @@ MAC/FDDI addresses:
 	specifier to use reversed byte order suitable for visual interpretation
 	of Bluetooth addresses which are in the little endian order.
 
+	Passed by reference.
+
 IPv4 addresses:
 
 	%pI4	1.2.3.4
@@ -146,6 +149,8 @@ IPv4 addresses:
 	host, network, big or little endian order addresses respectively. Where
 	no specifier is provided the default network/big endian order is used.
 
+	Passed by reference.
+
 IPv6 addresses:
 
 	%pI6	0001:0002:0003:0004:0005:0006:0007:0008
@@ -160,6 +165,8 @@ IPv6 addresses:
 	print a compressed IPv6 address as described by
 	http://tools.ietf.org/html/rfc5952
 
+	Passed by reference.
+
 IPv4/IPv6 addresses (generic, with port, flowinfo, scope):
 
 	%pIS	1.2.3.4		or 0001:0002:0003:0004:0005:0006:0007:0008
@@ -186,6 +193,8 @@ IPv4/IPv6 addresses (generic, with port, flowinfo, scope):
 	specifiers can be used as well and are ignored in case of an IPv6
 	address.
 
+	Passed by reference.
+
 	Further examples:
 
 	%pISfc		1.2.3.4		or [1:2:3:4:5:6:7:8]/123456789
@@ -207,6 +216,8 @@ UUID/GUID addresses:
 	Where no additional specifiers are used the default little endian
 	order with lower case hex characters will be printed.
 
+	Passed by reference.
+
 dentry names:
 	%pd{,2,3,4}
 	%pD{,2,3,4}
@@ -216,12 +227,16 @@ dentry names:
 	equivalent of %s dentry->d_name.name we used to use, %pd<n> prints
 	n last components.  %pD does the same thing for struct file.
 
+	Passed by reference.
+
 task_struct comm name:
 
         %pT
 
         For printing task_struct->comm.
 
+	Passed by reference (NULL for "current").
+
 struct va_format:
 
 	%pV
@@ -237,6 +252,8 @@ struct va_format:
 	Do not use this feature without some mechanism to verify the
 	correctness of the format string and va_list arguments.
 
+	Passed by reference.
+
 u64 SHOULD be printed with %llu/%llx:
 
 	printk("%llu", u64_var);
-- 
1.9.1

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