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Commit c7f5f4ab authored by Ingo Molnar's avatar Ingo Molnar
Browse files

Merge branch 'core/debug' into core/urgent 



Merge two debugging patchlets that were waiting for
preparatory commits to hit upstream.

Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parents eea5b551 62be73ea

kernel/panic.c

+3 −3
Original line number Diff line number Diff line
@@ -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;
@@ -108,8 +108,6 @@ void panic(const char *fmt, ...) 
	 */

	crash_kexec(NULL);



	kmsg_dump(KMSG_DUMP_PANIC);



	/*

	 * Note smp_send_stop is the usual smp shutdown function, which

	 * unfortunately means it may not be hardened to work in a panic
@@ -117,6 +115,8 @@ void panic(const char *fmt, ...) 
	 */

	smp_send_stop();



	kmsg_dump(KMSG_DUMP_PANIC);



	atomic_notifier_call_chain(&panic_notifier_list, 0, buf);



	bust_spinlocks(0);

lib/Kconfig.debug

+20 −0
Original line number Diff line number Diff line
@@ -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