From: Eric W. Biederman Date: Tue, 26 Jul 2005 18:16:00 +0000 (-0600) Subject: [PATCH] acpi_power_off: Don't switch to the boot cpu X-Git-Tag: Ubuntu-5.0.0-8.9~55976 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=6660316cb7a1a2c59a73a52870490c0f782f45c1;p=mirror_ubuntu-disco-kernel.git [PATCH] acpi_power_off: Don't switch to the boot cpu machine_power_off on i386 and x86_64 now switch to the boot cpu out of paranoia and because the MP Specification indicates it is a good idea on reboot, so for those architectures it is a noop. I can't see anything in the acpi spec that requires you to be on the boot cpu to power off the system, so this should not be an issue for ia64. In addition ia64 has the altix a massive multi-node system where switching to the boot cpu sounds insane as we may hot removed the boot cpu. Signed-off-by: Eric W. Biederman Signed-off-by: Linus Torvalds --- diff --git a/drivers/acpi/sleep/poweroff.c b/drivers/acpi/sleep/poweroff.c index 1fc86e6b5ab9..3d41d93a3db8 100644 --- a/drivers/acpi/sleep/poweroff.c +++ b/drivers/acpi/sleep/poweroff.c @@ -54,7 +54,6 @@ void acpi_power_off(void) acpi_sleep_prepare(ACPI_STATE_S5); local_irq_disable(); /* Some SMP machines only can poweroff in boot CPU */ - set_cpus_allowed(current, cpumask_of_cpu(0)); acpi_enter_sleep_state(ACPI_STATE_S5); }