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author | Ingo Molnar <mingo@elte.hu> | 2010-10-30 12:43:08 +0400 |
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committer | Ingo Molnar <mingo@elte.hu> | 2010-10-30 12:43:08 +0400 |
commit | 169ed55bd30305b933f52bfab32a58671d44ab68 (patch) | |
tree | 32e280957474f458901abfce16fa2a1687ef7497 /drivers/xen/events.c | |
parent | 3d7851b3cdd43a734e5cc4c643fd886ab28ad4d5 (diff) | |
parent | 45f81b1c96d9793e47ce925d257ea693ce0b193e (diff) | |
download | linux-169ed55bd30305b933f52bfab32a58671d44ab68.tar.xz |
Merge branch 'tip/perf/jump-label-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into perf/urgent
Diffstat (limited to 'drivers/xen/events.c')
-rw-r--r-- | drivers/xen/events.c | 101 |
1 files changed, 69 insertions, 32 deletions
diff --git a/drivers/xen/events.c b/drivers/xen/events.c index 7d24b0d94ed4..347f17edad77 100644 --- a/drivers/xen/events.c +++ b/drivers/xen/events.c @@ -261,7 +261,7 @@ static void init_evtchn_cpu_bindings(void) } #endif - memset(cpu_evtchn_mask(0), ~0, sizeof(cpu_evtchn_mask(0))); + memset(cpu_evtchn_mask(0), ~0, sizeof(struct cpu_evtchn_s)); } static inline void clear_evtchn(int port) @@ -377,7 +377,7 @@ int bind_evtchn_to_irq(unsigned int evtchn) irq = find_unbound_irq(); set_irq_chip_and_handler_name(irq, &xen_dynamic_chip, - handle_edge_irq, "event"); + handle_fasteoi_irq, "event"); evtchn_to_irq[evtchn] = irq; irq_info[irq] = mk_evtchn_info(evtchn); @@ -435,6 +435,11 @@ static int bind_virq_to_irq(unsigned int virq, unsigned int cpu) irq = per_cpu(virq_to_irq, cpu)[virq]; if (irq == -1) { + irq = find_unbound_irq(); + + set_irq_chip_and_handler_name(irq, &xen_percpu_chip, + handle_percpu_irq, "virq"); + bind_virq.virq = virq; bind_virq.vcpu = cpu; if (HYPERVISOR_event_channel_op(EVTCHNOP_bind_virq, @@ -442,11 +447,6 @@ static int bind_virq_to_irq(unsigned int virq, unsigned int cpu) BUG(); evtchn = bind_virq.port; - irq = find_unbound_irq(); - - set_irq_chip_and_handler_name(irq, &xen_percpu_chip, - handle_percpu_irq, "virq"); - evtchn_to_irq[evtchn] = irq; irq_info[irq] = mk_virq_info(evtchn, virq); @@ -578,41 +578,75 @@ 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); int i; unsigned long flags; static DEFINE_SPINLOCK(debug_lock); + struct vcpu_info *v; spin_lock_irqsave(&debug_lock, flags); - printk("vcpu %d\n ", cpu); + printk("\nvcpu %d\n ", cpu); for_each_online_cpu(i) { - struct vcpu_info *v = per_cpu(xen_vcpu, i); - printk("%d: masked=%d pending=%d event_sel %08lx\n ", i, - (get_irq_regs() && i == cpu) ? xen_irqs_disabled(get_irq_regs()) : v->evtchn_upcall_mask, - v->evtchn_upcall_pending, - v->evtchn_pending_sel); + int pending; + v = per_cpu(xen_vcpu, i); + pending = (get_irq_regs() && i == cpu) + ? xen_irqs_disabled(get_irq_regs()) + : v->evtchn_upcall_mask; + printk("%d: masked=%d pending=%d event_sel %0*lx\n ", i, + pending, v->evtchn_upcall_pending, + (int)(sizeof(v->evtchn_pending_sel)*2), + v->evtchn_pending_sel); + } + v = per_cpu(xen_vcpu, cpu); + + printk("\npending:\n "); + for (i = ARRAY_SIZE(sh->evtchn_pending)-1; i >= 0; i--) + printk("%0*lx%s", (int)sizeof(sh->evtchn_pending[0])*2, + sh->evtchn_pending[i], + i % 8 == 0 ? "\n " : " "); + printk("\nglobal mask:\n "); + for (i = ARRAY_SIZE(sh->evtchn_mask)-1; i >= 0; i--) + printk("%0*lx%s", + (int)(sizeof(sh->evtchn_mask[0])*2), + sh->evtchn_mask[i], + i % 8 == 0 ? "\n " : " "); + + printk("\nglobally unmasked:\n "); + for (i = ARRAY_SIZE(sh->evtchn_mask)-1; i >= 0; i--) + printk("%0*lx%s", (int)(sizeof(sh->evtchn_mask[0])*2), + sh->evtchn_pending[i] & ~sh->evtchn_mask[i], + i % 8 == 0 ? "\n " : " "); + + printk("\nlocal cpu%d mask:\n ", cpu); + for (i = (NR_EVENT_CHANNELS/BITS_PER_LONG)-1; i >= 0; i--) + printk("%0*lx%s", (int)(sizeof(cpu_evtchn[0])*2), + cpu_evtchn[i], + i % 8 == 0 ? "\n " : " "); + + printk("\nlocally unmasked:\n "); + for (i = ARRAY_SIZE(sh->evtchn_mask)-1; i >= 0; i--) { + unsigned long pending = sh->evtchn_pending[i] + & ~sh->evtchn_mask[i] + & cpu_evtchn[i]; + printk("%0*lx%s", (int)(sizeof(sh->evtchn_mask[0])*2), + pending, i % 8 == 0 ? "\n " : " "); } - printk("pending:\n "); - for(i = ARRAY_SIZE(sh->evtchn_pending)-1; i >= 0; i--) - printk("%08lx%s", sh->evtchn_pending[i], - i % 8 == 0 ? "\n " : " "); - printk("\nmasks:\n "); - for(i = ARRAY_SIZE(sh->evtchn_mask)-1; i >= 0; i--) - printk("%08lx%s", sh->evtchn_mask[i], - i % 8 == 0 ? "\n " : " "); - - printk("\nunmasked:\n "); - for(i = ARRAY_SIZE(sh->evtchn_mask)-1; i >= 0; i--) - printk("%08lx%s", sh->evtchn_pending[i] & ~sh->evtchn_mask[i], - i % 8 == 0 ? "\n " : " "); printk("\npending list:\n"); - for(i = 0; i < NR_EVENT_CHANNELS; i++) { + for (i = 0; i < NR_EVENT_CHANNELS; i++) { if (sync_test_bit(i, sh->evtchn_pending)) { - printk(" %d: event %d -> irq %d\n", + int word_idx = i / BITS_PER_LONG; + printk(" %d: event %d -> irq %d%s%s%s\n", cpu_from_evtchn(i), i, - evtchn_to_irq[i]); + evtchn_to_irq[i], + sync_test_bit(word_idx, &v->evtchn_pending_sel) + ? "" : " l2-clear", + !sync_test_bit(i, sh->evtchn_mask) + ? "" : " globally-masked", + sync_test_bit(i, cpu_evtchn) + ? "" : " locally-masked"); } } @@ -663,6 +697,9 @@ static void __xen_evtchn_do_upcall(void) int irq = evtchn_to_irq[port]; struct irq_desc *desc; + mask_evtchn(port); + clear_evtchn(port); + if (irq != -1) { desc = irq_to_desc(irq); if (desc) @@ -800,10 +837,10 @@ static void ack_dynirq(unsigned int irq) { int evtchn = evtchn_from_irq(irq); - move_native_irq(irq); + move_masked_irq(irq); if (VALID_EVTCHN(evtchn)) - clear_evtchn(evtchn); + unmask_evtchn(evtchn); } static int retrigger_dynirq(unsigned int irq) @@ -959,7 +996,7 @@ static struct irq_chip xen_dynamic_chip __read_mostly = { .mask = disable_dynirq, .unmask = enable_dynirq, - .ack = ack_dynirq, + .eoi = ack_dynirq, .set_affinity = set_affinity_irq, .retrigger = retrigger_dynirq, }; |