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authorDavid Vrabel <david.vrabel@citrix.com>2013-03-13 13:20:52 +0000
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2014-01-06 10:07:33 -0500
commitfc087e10734a4d3e40693fc099461ec1270b3fff (patch)
tree801838375708e2053b413bbfd75a758c9421e93b /drivers/xen/events.c
parent872951850666689e931e567ebdc7c483135d14cf (diff)
xen/events: remove unnecessary init_evtchn_cpu_bindings()
Because the guest-side binding of an event to a VCPU (i.e., setting the local per-cpu masks) is always explicitly done after an event channel is bound to a port, there is no need to initialize all possible events as bound to VCPU 0 at start of day or after a resume. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Diffstat (limited to 'drivers/xen/events.c')
-rw-r--r--drivers/xen/events.c22
1 files changed, 0 insertions, 22 deletions
diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index ddcdbb508dab..1e2c74bcd0c8 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -334,24 +334,6 @@ static void bind_evtchn_to_cpu(unsigned int chn, unsigned int cpu)
info_for_irq(irq)->cpu = cpu;
}
-static void init_evtchn_cpu_bindings(void)
-{
- int i;
-#ifdef CONFIG_SMP
- struct irq_info *info;
-
- /* By default all event channels notify CPU#0. */
- list_for_each_entry(info, &xen_irq_list_head, list) {
- struct irq_desc *desc = irq_to_desc(info->irq);
- cpumask_copy(desc->irq_data.affinity, cpumask_of(0));
- }
-#endif
-
- for_each_possible_cpu(i)
- memset(per_cpu(cpu_evtchn_mask, i),
- (i == 0) ? ~0 : 0, NR_EVENT_CHANNELS/8);
-}
-
static inline void clear_evtchn(int port)
{
struct shared_info *s = HYPERVISOR_shared_info;
@@ -1778,8 +1760,6 @@ void xen_irq_resume(void)
unsigned int cpu, evtchn;
struct irq_info *info;
- init_evtchn_cpu_bindings();
-
/* New event-channel space is not 'live' yet. */
for (evtchn = 0; evtchn < NR_EVENT_CHANNELS; evtchn++)
mask_evtchn(evtchn);
@@ -1890,8 +1870,6 @@ void __init xen_init_IRQ(void)
for (i = 0; i < NR_EVENT_CHANNELS; i++)
evtchn_to_irq[i] = -1;
- init_evtchn_cpu_bindings();
-
/* No event channels are 'live' right now. */
for (i = 0; i < NR_EVENT_CHANNELS; i++)
mask_evtchn(i);