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authorLinus Torvalds <torvalds@linux-foundation.org>2012-06-15 16:52:35 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-06-15 16:52:35 -0700
commita95f9b6e092ed862278e08266207c7ab231076b4 (patch)
treec5daf86ce89b3033c051dfc7b2955981d6add16d /lib
parenta41b0e71563166762ee9d4905f3aa518a9348ed4 (diff)
parent4a1e001d2bb75c47a9cdbbfb66ae51daff1ddcba (diff)
Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull core updates (RCU and locking) from Ingo Molnar: "Most of the diffstat comes from the RCU slow boot regression fixes, but there's also a debuggability improvements/fixes." * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: memblock: Document memblock_is_region_{memory,reserved}() rcu: Precompute RCU_FAST_NO_HZ timer offsets rcu: Move RCU_FAST_NO_HZ per-CPU variables to rcu_dynticks structure rcu: Update RCU_FAST_NO_HZ tracing for lazy callbacks rcu: RCU_FAST_NO_HZ detection of callback adoption spinlock: Indicate that a lockup is only suspected kdump: Execute kmsg_dump(KMSG_DUMP_PANIC) after smp_send_stop() panic: Make panic_on_oops configurable
Diffstat (limited to 'lib')
-rw-r--r--lib/Kconfig.debug20
-rw-r--r--lib/spinlock_debug.c2
2 files changed, 21 insertions, 1 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index a42d3ae3964..ff5bdee4716 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -241,6 +241,26 @@ 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
diff --git a/lib/spinlock_debug.c b/lib/spinlock_debug.c
index d0ec4f3d159..e91fbc23fff 100644
--- a/lib/spinlock_debug.c
+++ b/lib/spinlock_debug.c
@@ -118,7 +118,7 @@ static void __spin_lock_debug(raw_spinlock_t *lock)
/* lockup suspected: */
if (print_once) {
print_once = 0;
- spin_dump(lock, "lockup");
+ spin_dump(lock, "lockup suspected");
#ifdef CONFIG_SMP
trigger_all_cpu_backtrace();
#endif