diff options
| author | Ian Campbell <ian.campbell@citrix.com> | 2011-03-10 17:08:08 +0100 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2011-03-10 20:48:38 +0100 |
| commit | cb60d11427bbdd42c27edfa2ef1fa6344f455e1d (patch) | |
| tree | c97f4a5b70cb530e0a939b16c70f0b29ccdab78f /drivers/xen | |
| parent | xen: events: refactor GSI pirq bindings functions (diff) | |
| download | linux-cb60d11427bbdd42c27edfa2ef1fa6344f455e1d.tar.xz linux-cb60d11427bbdd42c27edfa2ef1fa6344f455e1d.zip | |
xen: events: use per-cpu variable for cpu_evtchn_mask
I can't see any reason why it isn't already.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'drivers/xen')
| -rw-r--r-- | drivers/xen/events.c | 28 |
1 files changed, 8 insertions, 20 deletions
diff --git a/drivers/xen/events.c b/drivers/xen/events.c index a40b2a1c6255..2dffa43696d8 100644 --- a/drivers/xen/events.c +++ b/drivers/xen/events.c @@ -107,19 +107,9 @@ static struct irq_info *irq_info; static int *pirq_to_irq; static int *evtchn_to_irq; -struct cpu_evtchn_s { - unsigned long bits[NR_EVENT_CHANNELS/BITS_PER_LONG]; -}; - -static __initdata struct cpu_evtchn_s init_evtchn_mask = { - .bits[0 ... (NR_EVENT_CHANNELS/BITS_PER_LONG)-1] = ~0ul, -}; -static struct cpu_evtchn_s *cpu_evtchn_mask_p = &init_evtchn_mask; -static inline unsigned long *cpu_evtchn_mask(int cpu) -{ - return cpu_evtchn_mask_p[cpu].bits; -} +static DEFINE_PER_CPU(unsigned long [NR_EVENT_CHANNELS/BITS_PER_LONG], + cpu_evtchn_mask); /* Xen will never allocate port zero for any purpose. */ #define VALID_EVTCHN(chn) ((chn) != 0) @@ -257,7 +247,7 @@ static inline unsigned long active_evtchns(unsigned int cpu, unsigned int idx) { return (sh->evtchn_pending[idx] & - cpu_evtchn_mask(cpu)[idx] & + per_cpu(cpu_evtchn_mask, cpu)[idx] & ~sh->evtchn_mask[idx]); } @@ -270,8 +260,8 @@ static void bind_evtchn_to_cpu(unsigned int chn, unsigned int cpu) cpumask_copy(irq_to_desc(irq)->irq_data.affinity, cpumask_of(cpu)); #endif - clear_bit(chn, cpu_evtchn_mask(cpu_from_irq(irq))); - set_bit(chn, cpu_evtchn_mask(cpu)); + clear_bit(chn, per_cpu(cpu_evtchn_mask, cpu_from_irq(irq))); + set_bit(chn, per_cpu(cpu_evtchn_mask, cpu)); irq_info[irq].cpu = cpu; } @@ -289,8 +279,8 @@ static void init_evtchn_cpu_bindings(void) #endif for_each_possible_cpu(i) - memset(cpu_evtchn_mask(i), - (i == 0) ? ~0 : 0, sizeof(struct cpu_evtchn_s)); + memset(per_cpu(cpu_evtchn_mask, i), + (i == 0) ? ~0 : 0, sizeof(*per_cpu(cpu_evtchn_mask, i))); } @@ -925,7 +915,7 @@ irqreturn_t xen_debug_interrupt(int irq, void *dev_id) { struct shared_info *sh = HYPERVISOR_shared_info; int cpu = smp_processor_id(); - unsigned long *cpu_evtchn = cpu_evtchn_mask(cpu); + unsigned long *cpu_evtchn = per_cpu(cpu_evtchn_mask, cpu); int i; unsigned long flags; static DEFINE_SPINLOCK(debug_lock); @@ -1462,8 +1452,6 @@ void __init xen_init_IRQ(void) { int i; - cpu_evtchn_mask_p = kcalloc(nr_cpu_ids, sizeof(struct cpu_evtchn_s), - GFP_KERNEL); irq_info = kcalloc(nr_irqs, sizeof(*irq_info), GFP_KERNEL); /* We are using nr_irqs as the maximum number of pirq available but |