linux-kernel - [PATCH 03/10] fault injection: allow FAULT_INJECTION_STACKTRACE_FILTER on X86

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Date:	Wed,  3 Aug 2016 17:05:48 +0200
From:	Vegard Nossum <vegard.nossum@...cle.com>
To:	Akinobu Mita <akinobu.mita@...il.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>
Cc:	linux-kernel@...r.kernel.org,
	Vegard Nossum <vegard.nossum@...cle.com>
Subject: [PATCH 03/10] fault injection: allow FAULT_INJECTION_STACKTRACE_FILTER on X86_64

This config option was apparently disallowed on x86_64 because of
problems with the stack unwinder:

    commit 6d690dcac92a84f98fd774862628ff871b713660
    Author: Akinobu Mita <akinobu.mita@...il.com>
    Date:   Sat May 12 10:36:53 2007 -0700

        fault injection: disable stacktrace filter for x86-64

However, I observe no problems whatsoever with this today and in fact
it's been very useful for debugging. Let's allow it again.

Cc: Akinobu Mita <akinobu.mita@...il.com>
Signed-off-by: Vegard Nossum <vegard.nossum@...cle.com>
---
 lib/Kconfig.debug | 1 -
 1 file changed, 1 deletion(-)

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 6baa522..5896b6f 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -1666,7 +1666,6 @@ config FAULT_INJECTION_DEBUG_FS
 config FAULT_INJECTION_STACKTRACE_FILTER
 	bool "stacktrace filter for fault-injection capabilities"
 	depends on FAULT_INJECTION_DEBUG_FS && STACKTRACE_SUPPORT
-	depends on !X86_64
 	select STACKTRACE
 	select FRAME_POINTER if !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM_UNWIND && !ARC && !SCORE
 	help
-- 
1.9.1