diff options
| author | Alex Nixon <alex.nixon@citrix.com> | 2008-08-22 12:52:15 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-08-25 11:25:14 +0200 |
| commit | d68d82afd4c88e25763b23cd9cd4974573a3706f (patch) | |
| tree | 42a3fb93a5cef70db7ad01fda1ed0dc68dbe6110 /arch/x86/xen/xen-ops.h | |
| parent | x86: separate generic cpu disabling code from APIC writes in cpu_disable (diff) | |
| download | linux-d68d82afd4c88e25763b23cd9cd4974573a3706f.tar.xz linux-d68d82afd4c88e25763b23cd9cd4974573a3706f.zip | |
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.h | 6 |
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 |