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| author | Arnd Bergmann <arnd@arndb.de> | 2012-02-28 12:39:56 +0000 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2012-02-28 12:40:01 +0000 |
| commit | 4d8cfec692e988b844dcaeaeb76b5780b7ef9d28 (patch) | |
| tree | 67d43adab2afd18a74d08f347e3676ae1a64193f /arch/x86/xen/smp.c | |
| parent | a3a3c4664184f86ef964323d106c62158e2b3f25 (diff) | |
| parent | 1d8c38c3d1b48eeb9cfaa42a8be13a1423569eb2 (diff) | |
| download | linux-4d8cfec692e988b844dcaeaeb76b5780b7ef9d28.tar.gz linux-4d8cfec692e988b844dcaeaeb76b5780b7ef9d28.tar.bz2 linux-4d8cfec692e988b844dcaeaeb76b5780b7ef9d28.zip | |
Merge branch 'cleanup-3.4' of git://github.com/hzhuang1/linux into next/cleanup
* 'cleanup-3.4' of git://github.com/hzhuang1/linux: (2 commits)
rtc: sa1100: remove verification code of alarm
rtc: sa1100: remove periodic code
(update to v3.3-rc5)
Diffstat (limited to 'arch/x86/xen/smp.c')
| -rw-r--r-- | arch/x86/xen/smp.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c index 041d4fe9dfe4..501d4e0244ba 100644 --- a/arch/x86/xen/smp.c +++ b/arch/x86/xen/smp.c @@ -409,6 +409,13 @@ static void __cpuinit xen_play_dead(void) /* used only with HOTPLUG_CPU */ play_dead_common(); HYPERVISOR_vcpu_op(VCPUOP_down, smp_processor_id(), NULL); cpu_bringup(); + /* + * Balance out the preempt calls - as we are running in cpu_idle + * loop which has been called at bootup from cpu_bringup_and_idle. + * The cpucpu_bringup_and_idle called cpu_bringup which made a + * preempt_disable() So this preempt_enable will balance it out. + */ + preempt_enable(); } #else /* !CONFIG_HOTPLUG_CPU */ |