[patch 16/18] init: Introduce SYSTEM_BOOTING_UP/SMP states

[Thomas Gleixner]

might_sleep() debugging should be active right after the scheduler starts
working and smp_processor_id() debugging right before the first non boot
cpu is brought up.

Add two new states which allow to enable those checks earlier and add them
to the xen do_poweroff() function.

No functional change.

Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
---
 drivers/xen/manage.c   |    2 ++
 include/linux/kernel.h |    2 ++
 2 files changed, 4 insertions(+)

--- a/drivers/xen/manage.c
+++ b/drivers/xen/manage.c
@@ -190,6 +190,8 @@ static void do_poweroff(void)
 {
 	switch (system_state) {
 	case SYSTEM_BOOTING:
+	case SYSTEM_BOOTING_UP:
+	case SYSTEM_BOOTING_SMP:
 		orderly_poweroff(true);
 		break;
 	case SYSTEM_RUNNING:
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -493,6 +493,8 @@ extern bool early_boot_irqs_disabled;
 /* Values used for system_state */
 extern enum system_states {
 	SYSTEM_BOOTING,
+	SYSTEM_BOOTING_UP,
+	SYSTEM_BOOTING_SMP,
 	SYSTEM_RUNNING,
 	SYSTEM_HALT,
 	SYSTEM_POWER_OFF,