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panic: Make panic_on_oops configurable 

Several distros set this by default by patching panic_on_oops.
It seems to fit with the BOOTPARAM_{HARD,SOFT}_PANIC options
though, so let's add a Kconfig entry and reduce some more
upstream delta.

Signed-off-by: Kyle McMartin <kyle@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20120411121529.GH26688@redacted.bos.redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
hifive-unleashed-5.1
Kyle McMartin 2012-04-11 08:15:29 -04:00 committed by Ingo Molnar
parent febb72a6e4
commit 2a01bb3885
2 changed files with 21 additions and 1 deletions
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2
kernel/panic.c
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@ -27,7 +27,7 @@
#define PANIC_TIMER_STEP 100
#define PANIC_BLINK_SPD 18
int panic_on_oops;
int panic_on_oops = CONFIG_PANIC_ON_OOPS_VALUE;
static unsigned long tainted_mask;
static int pause_on_oops;
static int pause_on_oops_flag;

20
lib/Kconfig.debug
View File

@ -228,6 +228,26 @@ config BOOTPARAM_SOFTLOCKUP_PANIC_VALUE
default 0 if !BOOTPARAM_SOFTLOCKUP_PANIC
default 1 if BOOTPARAM_SOFTLOCKUP_PANIC
config PANIC_ON_OOPS
bool "Panic on Oops" if EXPERT
default n
help
Say Y here to enable the kernel to panic when it oopses. This
has the same effect as setting oops=panic on the kernel command
line.
This feature is useful to ensure that the kernel does not do
anything erroneous after an oops which could result in data
corruption or other issues.
Say N if unsure.
config PANIC_ON_OOPS_VALUE
int
range 0 1
default 0 if !PANIC_ON_OOPS
default 1 if PANIC_ON_OOPS
config DETECT_HUNG_TASK
bool "Detect Hung Tasks"
depends on DEBUG_KERNEL