linux-kernel - [PATCH] [1/2] Add a SYSTEM

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Message-Id: <20080902134922.9401F3E6A00@basil.firstfloor.org>
Date:	Tue,  2 Sep 2008 15:49:22 +0200 (CEST)
From:	Andi Kleen <andi@...stfloor.org>
To:	torvalds@...l.org, linux-kernel@...r.kernel.org
Subject: [PATCH] [1/2] Add a SYSTEM_PANIC state


Natural extension of the other system states.

This is useful to do some special case code on system panic.

Signed-off-by: Andi Kleen <ak@...ux.intel.com>

---
 include/linux/kernel.h |    1 +
 kernel/panic.c         |    2 ++
 2 files changed, 3 insertions(+)

Index: linux/include/linux/kernel.h
===================================================================
--- linux.orig/include/linux/kernel.h
+++ linux/include/linux/kernel.h
@@ -248,6 +248,7 @@ extern enum system_states {
 	SYSTEM_POWER_OFF,
 	SYSTEM_RESTART,
 	SYSTEM_SUSPEND_DISK,
+	SYSTEM_PANIC,
 } system_state;
 
 #define TAINT_PROPRIETARY_MODULE	(1<<0)
Index: linux/kernel/panic.c
===================================================================
--- linux.orig/kernel/panic.c
+++ linux/kernel/panic.c
@@ -68,6 +68,8 @@ NORET_TYPE void panic(const char * fmt, 
 	unsigned long caller = (unsigned long) __builtin_return_address(0);
 #endif
 
+	system_state = SYSTEM_PANIC;
+
 	/*
 	 * It's possible to come here directly from a panic-assertion and not
 	 * have preempt disabled. Some functions called from here want
--
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