diff options
| author | David Vrabel <david.vrabel@citrix.com> | 2013-03-13 13:20:52 +0000 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2014-01-06 10:07:33 -0500 |
| commit | fc087e10734a4d3e40693fc099461ec1270b3fff (patch) | |
| tree | 801838375708e2053b413bbfd75a758c9421e93b /drivers/xen | |
| parent | 872951850666689e931e567ebdc7c483135d14cf (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')
| -rw-r--r-- | drivers/xen/events.c | 22 |
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); |