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| author | Ian Campbell <Ian.Campbell@citrix.com> | 2009-11-21 08:35:55 +0800 |
|---|---|---|
| committer | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2009-12-03 11:14:50 -0800 |
| commit | be012920ecba161ad20303a3f6d9e96c58cf97c7 (patch) | |
| tree | eb14f70bc852829c55fab84e28220f525379c3f2 | |
| parent | ae7888012969355a548372e99b066d9e31153b62 (diff) | |
| download | blackbird-op-linux-be012920ecba161ad20303a3f6d9e96c58cf97c7.tar.gz blackbird-op-linux-be012920ecba161ad20303a3f6d9e96c58cf97c7.zip | |
xen: re-register runstate area earlier on resume.
This is necessary to ensure the runstate area is available to
xen_sched_clock before any calls to printk which will require it in
order to provide a timestamp.
I chose to pull the xen_setup_runstate_info out of xen_time_init into
the caller in order to maintain parity with calling
xen_setup_runstate_info separately from calling xen_time_resume.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Stable Kernel <stable@kernel.org>
| -rw-r--r-- | arch/x86/xen/enlighten.c | 2 | ||||
| -rw-r--r-- | arch/x86/xen/time.c | 5 | ||||
| -rw-r--r-- | arch/x86/xen/xen-ops.h | 1 |
3 files changed, 5 insertions, 3 deletions
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index dfbf70e65860..cb61f77e4496 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -148,6 +148,8 @@ void xen_vcpu_restore(void) HYPERVISOR_vcpu_op(VCPUOP_down, cpu, NULL)) BUG(); + xen_setup_runstate_info(cpu); + xen_vcpu_setup(cpu); if (other_cpu && diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c index 0a5aa44299a5..6bbff94328d2 100644 --- a/arch/x86/xen/time.c +++ b/arch/x86/xen/time.c @@ -100,7 +100,7 @@ bool xen_vcpu_stolen(int vcpu) return per_cpu(runstate, vcpu).state == RUNSTATE_runnable; } -static void setup_runstate_info(int cpu) +void xen_setup_runstate_info(int cpu) { struct vcpu_register_runstate_memory_area area; @@ -442,8 +442,6 @@ void xen_setup_timer(int cpu) evt->cpumask = cpumask_of(cpu); evt->irq = irq; - - setup_runstate_info(cpu); } void xen_teardown_timer(int cpu) @@ -494,6 +492,7 @@ __init void xen_time_init(void) setup_force_cpu_cap(X86_FEATURE_TSC); + xen_setup_runstate_info(cpu); xen_setup_timer(cpu); xen_setup_cpu_clockevents(); } diff --git a/arch/x86/xen/xen-ops.h b/arch/x86/xen/xen-ops.h index 355fa6b99c9c..32529326683d 100644 --- a/arch/x86/xen/xen-ops.h +++ b/arch/x86/xen/xen-ops.h @@ -41,6 +41,7 @@ void __init xen_build_dynamic_phys_to_machine(void); void xen_init_irq_ops(void); void xen_setup_timer(int cpu); +void xen_setup_runstate_info(int cpu); void xen_teardown_timer(int cpu); cycle_t xen_clocksource_read(void); void xen_setup_cpu_clockevents(void); |
