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

Steven Rostedt
2017-05-15T14:58:37Z

On Sun, 14 May 2017 20:27:32 +0200
Thomas Gleixner <tglx@linutronix.de> wrote:

> 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@linutronix.de>

Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

-- Steve

> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
> ---
> 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,
>