linux-kernel - [PATCH] Add new TAINT_KSPLICE flag for when a Ksplice update has been loaded.

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Date:	Fri, 19 Jun 2009 15:57:21 -0400 (EDT)
From:	Tim Abbott <tabbott@...lice.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
cc:	Linux kernel mailing list <linux-kernel@...r.kernel.org>,
	Arjan van de Ven <arjan@...radead.org>,
	Alexey Dobriyan <adobriyan@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Anders Kaseorg <andersk@...lice.com>,
	Jeffrey B Arnold <jbarnold@...lice.com>
Subject: [PATCH] Add new TAINT_KSPLICE flag for when a Ksplice update has
 been loaded.

Distributions and kerneloops.org have requested that the Ksplice
rebootless update system taint the kernel the first time that a
Ksplice update is installed, in order to assist with bug triage.

Ksplice uses a new taint flag, TAINT_KSPLICE, displayed as 'K', for
this purpose.

We would like to confirm that this use of taint meets with the
community's approval and get this taint flag registered in mainline.

Signed-off-by: Tim Abbott <tabbott@...lice.com>
---
 include/linux/kernel.h |    1 +
 kernel/panic.c         |    2 ++
 2 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index c5a71c3..be77585 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -330,6 +330,7 @@ extern enum system_states {
 #define TAINT_OVERRIDDEN_ACPI_TABLE	8
 #define TAINT_WARN			9
 #define TAINT_CRAP			10
+#define TAINT_KSPLICE			11
 
 extern void dump_stack(void) __cold;
 
diff --git a/kernel/panic.c b/kernel/panic.c
index 984b3ec..c2ea780 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -160,6 +160,7 @@ static const struct tnt tnts[] = {
 	{ TAINT_OVERRIDDEN_ACPI_TABLE,	'A', ' ' },
 	{ TAINT_WARN,			'W', ' ' },
 	{ TAINT_CRAP,			'C', ' ' },
+	{ TAINT_KSPLICE,		'K', ' ' },
 };
 
 /**
@@ -176,6 +177,7 @@ static const struct tnt tnts[] = {
  *  'A' - ACPI table overridden.
  *  'W' - Taint on warning.
  *  'C' - modules from drivers/staging are loaded.
+ *  'K' - A Ksplice update has been loaded.
  *
  *	The string is overwritten by the next call to print_taint().
  */
-- 
1.6.3.1
--
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