tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
1
fork

Configure Feed

Select the types of activity you want to include in your feed.

Fix SMP poweroff hangs

We need to disable all CPUs other than the boot CPU (usually 0) before
attempting to power-off modern SMP machines. This fixes the
hang-on-poweroff issue on my MythTV SMP box, and also on Thomas Gleixner's
new toybox.

Signed-off-by: Mark Lord <mlord@pobox.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

authored by

Mark Lord and committed by
Linus Torvalds 4047727e 281e0e3b

+2
+2
kernel/sys.c
··· 32 32 #include <linux/getcpu.h> 33 33 #include <linux/task_io_accounting_ops.h> 34 34 #include <linux/seccomp.h> 35 + #include <linux/cpu.h> 35 36 36 37 #include <linux/compat.h> 37 38 #include <linux/syscalls.h> ··· 879 878 kernel_shutdown_prepare(SYSTEM_POWER_OFF); 880 879 if (pm_power_off_prepare) 881 880 pm_power_off_prepare(); 881 + disable_nonboot_cpus(); 882 882 sysdev_shutdown(); 883 883 printk(KERN_EMERG "Power down.\n"); 884 884 machine_power_off();