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authorAlex Nixon <alex.nixon@citrix.com>2008-08-22 11:52:15 +0100
committerIngo Molnar <mingo@elte.hu>2008-08-25 11:25:14 +0200
commitd68d82afd4c88e25763b23cd9cd4974573a3706f (patch)
tree42a3fb93a5cef70db7ad01fda1ed0dc68dbe6110 /arch/x86/xen/xen-ops.h
parent8227dce7dc2cfdcc28ee0eadfb482a7ee77fba03 (diff)
xen: implement CPU hotplugging
Note the changes from 2.6.18-xen CPU hotplugging: A vcpu_down request from the remote admin via Xenbus both hotunplugs the CPU, and disables it by removing it from the cpu_present map, and removing its entry in /sys. A vcpu_up request from the remote admin only re-enables the CPU, and does not immediately bring the CPU up. A udev event is emitted, which can be caught by the user if he wishes to automatically re-up CPUs when available, or implement a more complex policy. Signed-off-by: Alex Nixon <alex.nixon@citrix.com> Acked-by: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/xen/xen-ops.h')
-rw-r--r--arch/x86/xen/xen-ops.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/xen/xen-ops.h b/arch/x86/xen/xen-ops.h
index 1e8bfdaa20d3..8dbd97fd7f18 100644
--- a/arch/x86/xen/xen-ops.h
+++ b/arch/x86/xen/xen-ops.h
@@ -34,6 +34,7 @@ void __init xen_build_dynamic_phys_to_machine(void);
void xen_init_irq_ops(void);
void xen_setup_timer(int cpu);
+void xen_teardown_timer(int cpu);
cycle_t xen_clocksource_read(void);
void xen_setup_cpu_clockevents(void);
unsigned long xen_tsc_khz(void);
@@ -50,11 +51,16 @@ void xen_mark_init_mm_pinned(void);
void __init xen_setup_vcpu_info_placement(void);
+void xen_play_dead(void);
+void xen_cpu_die(unsigned int cpu);
+int xen_cpu_disable(void);
+
#ifdef CONFIG_SMP
void xen_smp_init(void);
void __init xen_init_spinlocks(void);
__cpuinit void xen_init_lock_cpu(int cpu);
+void xen_uninit_lock_cpu(int cpu);
extern cpumask_t xen_cpu_initialized_map;
#else