The patch titled
Fix SMP poweroff hangs
has been removed from the -mm tree. Its filename was
fix-smp-poweroff-hangs.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: Fix SMP poweroff hangs
From: Mark Lord <lkml@xxxxxx>
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@xxxxxxxxx>
Acked-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: "Rafael J. Wysocki" <rjw@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/sys.c | 2 ++
1 file changed, 2 insertions(+)
diff -puN kernel/sys.c~fix-smp-poweroff-hangs kernel/sys.c
--- a/kernel/sys.c~fix-smp-poweroff-hangs
+++ a/kernel/sys.c
@@ -32,6 +32,7 @@
#include <linux/getcpu.h>
#include <linux/task_io_accounting_ops.h>
#include <linux/seccomp.h>
+#include <linux/cpu.h>
#include <linux/compat.h>
#include <linux/syscalls.h>
@@ -878,6 +879,7 @@ void kernel_power_off(void)
kernel_shutdown_prepare(SYSTEM_POWER_OFF);
if (pm_power_off_prepare)
pm_power_off_prepare();
+ disable_nonboot_cpus();
sysdev_shutdown();
printk(KERN_EMERG "Power down.\n");
machine_power_off();
_
Patches currently in -mm which might be from lkml@xxxxxx are
acpi-fix-bdc-handling-in-drivers-acpi-sleep-procc.patch
rtc-fix-readback-from-sys-class-rtc-rtc-wakealarm.patch
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