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| author | Ingo Molnar <mingo@elte.hu> | 2012-03-05 09:20:08 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2012-03-05 09:20:08 +0100 |
| commit | 737f24bda723fdf89ecaacb99fa2bf5683c32799 (patch) | |
| tree | 35495fff3e9956679cb5468e74e6814c8e44ee66 /arch/x86/xen/smp.c | |
| parent | 8eedce996556d7d06522cd3a0e6069141c8dffe0 (diff) | |
| parent | b7c924274c456499264d1cfa3d44063bb11eb5db (diff) | |
| download | op-kernel-dev-737f24bda723fdf89ecaacb99fa2bf5683c32799.zip op-kernel-dev-737f24bda723fdf89ecaacb99fa2bf5683c32799.tar.gz | |
Merge branch 'perf/urgent' into perf/core
Conflicts:
tools/perf/builtin-record.c
tools/perf/builtin-top.c
tools/perf/perf.h
tools/perf/util/top.h
Merge reason: resolve these cherry-picking conflicts.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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 041d4fe..501d4e0 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 */ |
