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xen/time: Encapsulate the struct clock_event_device in another structure.

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We don't do any code movement. We just encapsulate the struct clock_event_device
in a new structure which contains said structure and a pointer to
a char *name. The 'name' will be used in 'xen/time: Don't leak interrupt
name when offlining'.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
This commit is contained in:
Konrad Rzeszutek Wilk 2013-06-04 17:06:36 -04:00
parent 354e7b7619
commit 31620a198c
1 changed files with 10 additions and 5 deletions
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15
arch/x86/xen/time.c
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@ -377,11 +377,16 @@ static const struct clock_event_device xen_vcpuop_clockevent = {
static const struct clock_event_device *xen_clockevent =
&xen_timerop_clockevent;
static DEFINE_PER_CPU(struct clock_event_device, xen_clock_events) = { .irq = -1 };
struct xen_clock_event_device {
struct clock_event_device evt;
char *name;
};
static DEFINE_PER_CPU(struct xen_clock_event_device, xen_clock_events) = { .evt.irq = -1 };
static irqreturn_t xen_timer_interrupt(int irq, void *dev_id)
{
struct clock_event_device *evt = &__get_cpu_var(xen_clock_events);
struct clock_event_device *evt = &__get_cpu_var(xen_clock_events).evt;
irqreturn_t ret;
ret = IRQ_NONE;
@ -401,7 +406,7 @@ void xen_setup_timer(int cpu)
struct clock_event_device *evt;
int irq;
evt = &per_cpu(xen_clock_events, cpu);
evt = &per_cpu(xen_clock_events, cpu).evt;
WARN(evt->irq >= 0, "IRQ%d for CPU%d is already allocated\n", evt->irq, cpu);
printk(KERN_INFO "installing Xen timer for CPU %d\n", cpu);
@ -426,7 +431,7 @@ void xen_teardown_timer(int cpu)
{
struct clock_event_device *evt;
BUG_ON(cpu == 0);
evt = &per_cpu(xen_clock_events, cpu);
evt = &per_cpu(xen_clock_events, cpu).evt;
unbind_from_irqhandler(evt->irq, NULL);
evt->irq = -1;
}
@ -435,7 +440,7 @@ void xen_setup_cpu_clockevents(void)
{
BUG_ON(preemptible());
clockevents_register_device(&__get_cpu_var(xen_clock_events));
clockevents_register_device(&__get_cpu_var(xen_clock_events).evt);
}
void xen_timer_resume(void)