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authorThomas Gleixner <tglx@linutronix.de>2017-05-16 20:42:47 +0200
committerIngo Molnar <mingo@kernel.org>2017-05-23 10:01:38 +0200
commit69a78ff226fe0241ab6cb9dd961667be477e3cf7 (patch)
tree0492721a52622ff791f2166e4a41245e7a3550b6 /drivers/xen
parentc6202adf3a0969514299cf10ff07376a84ad09bb (diff)
downloadlinux-69a78ff226fe0241ab6cb9dd961667be477e3cf7.tar.bz2
init: Introduce SYSTEM_SCHEDULING state
might_sleep() debugging and smp_processor_id() debugging should be active right after the scheduler starts working. The init task can invoke smp_processor_id() from preemptible context as it is pinned on the boot cpu until sched_smp_init() removes the pinning and lets it schedule on all non isolated cpus. Add a new state which allows to enable those checks earlier and add it to the xen do_poweroff() function. No functional change. Tested-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Juergen Gross <jgross@suse.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/20170516184736.196214622@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/xen')
-rw-r--r--drivers/xen/manage.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/xen/manage.c b/drivers/xen/manage.c
index c1ec8ee80924..9e35032351a0 100644
--- a/drivers/xen/manage.c
+++ b/drivers/xen/manage.c
@@ -190,6 +190,7 @@ static void do_poweroff(void)
{
switch (system_state) {
case SYSTEM_BOOTING:
+ case SYSTEM_SCHEDULING:
orderly_poweroff(true);
break;
case SYSTEM_RUNNING: