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Subject[PATCH v2 09/21] x86/xen: split xen_cpu_die()
Date
Split xen_cpu_die() into xen_pv_cpu_die() and xen_hvm_cpu_die() to support
further splitting of smp.c.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---
arch/x86/xen/smp.c | 26 ++++++++++++++++++++------
1 file changed, 20 insertions(+), 6 deletions(-)

diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c
index 6c8a3a5..6c4b415 100644
--- a/arch/x86/xen/smp.c
+++ b/arch/x86/xen/smp.c
@@ -513,10 +513,10 @@ static int xen_cpu_disable(void)
return 0;
}

-static void xen_cpu_die(unsigned int cpu)
+static void xen_pv_cpu_die(unsigned int cpu)
{
- while (xen_pv_domain() && HYPERVISOR_vcpu_op(VCPUOP_is_up,
- xen_vcpu_nr(cpu), NULL)) {
+ while (HYPERVISOR_vcpu_op(VCPUOP_is_up,
+ xen_vcpu_nr(cpu), NULL)) {
__set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(HZ/10);
}
@@ -529,6 +529,15 @@ static void xen_cpu_die(unsigned int cpu)
}
}

+static void xen_hvm_cpu_die(unsigned int cpu)
+{
+ if (common_cpu_die(cpu) == 0) {
+ xen_smp_intr_free(cpu);
+ xen_uninit_lock_cpu(cpu);
+ xen_teardown_timer(cpu);
+ }
+}
+
static void xen_play_dead(void) /* used only with HOTPLUG_CPU */
{
play_dead_common();
@@ -551,7 +560,12 @@ static int xen_cpu_disable(void)
return -ENOSYS;
}

-static void xen_cpu_die(unsigned int cpu)
+static void xen_pv_cpu_die(unsigned int cpu)
+{
+ BUG();
+}
+
+static void xen_hvm_cpu_die(unsigned int cpu)
{
BUG();
}
@@ -732,7 +746,7 @@ static const struct smp_ops xen_smp_ops __initconst = {
.smp_cpus_done = xen_smp_cpus_done,

.cpu_up = xen_cpu_up,
- .cpu_die = xen_cpu_die,
+ .cpu_die = xen_pv_cpu_die,
.cpu_disable = xen_cpu_disable,
.play_dead = xen_play_dead,

@@ -761,7 +775,7 @@ void __init xen_hvm_smp_init(void)
{
smp_ops.smp_prepare_cpus = xen_hvm_smp_prepare_cpus;
smp_ops.smp_send_reschedule = xen_smp_send_reschedule;
- smp_ops.cpu_die = xen_cpu_die;
+ smp_ops.cpu_die = xen_hvm_cpu_die;
smp_ops.send_call_func_ipi = xen_smp_send_call_function_ipi;
smp_ops.send_call_func_single_ipi = xen_smp_send_call_function_single_ipi;
smp_ops.smp_prepare_boot_cpu = xen_hvm_smp_prepare_boot_cpu;
--
2.9.3
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