653 lines
18 KiB
Plaintext
653 lines
18 KiB
Plaintext
From: jbeulich@novell.com
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Subject: fold per-CPU VIRQs onto a single IRQ each
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Patch-mainline: n/a
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--- head-2011-02-17.orig/arch/x86/kernel/time-xen.c 2010-11-23 15:07:01.000000000 +0100
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+++ head-2011-02-17/arch/x86/kernel/time-xen.c 2010-10-05 16:57:34.000000000 +0200
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@@ -671,19 +671,17 @@ int xen_update_persistent_clock(void)
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}
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/* Dynamically-mapped IRQ. */
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-DEFINE_PER_CPU(int, timer_irq);
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+static int __read_mostly timer_irq = -1;
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+static struct irqaction timer_action = {
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+ .handler = timer_interrupt,
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+ .flags = IRQF_DISABLED|IRQF_TIMER,
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+ .name = "timer"
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+};
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static void __init setup_cpu0_timer_irq(void)
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{
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- per_cpu(timer_irq, 0) =
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- bind_virq_to_irqhandler(
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- VIRQ_TIMER,
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- 0,
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- timer_interrupt,
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- IRQF_DISABLED|IRQF_TIMER|IRQF_NOBALANCING,
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- "timer0",
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- NULL);
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- BUG_ON(per_cpu(timer_irq, 0) < 0);
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+ timer_irq = bind_virq_to_irqaction(VIRQ_TIMER, 0, &timer_action);
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+ BUG_ON(timer_irq < 0);
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}
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static void __init _late_time_init(void)
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@@ -829,8 +827,6 @@ void xen_halt(void)
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}
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#ifdef CONFIG_SMP
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-static char timer_name[NR_CPUS][15];
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-
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int __cpuinit local_setup_timer(unsigned int cpu)
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{
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int seq, irq;
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@@ -856,16 +852,10 @@ int __cpuinit local_setup_timer(unsigned
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init_missing_ticks_accounting(cpu);
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} while (read_seqretry(&xtime_lock, seq));
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- sprintf(timer_name[cpu], "timer%u", cpu);
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- irq = bind_virq_to_irqhandler(VIRQ_TIMER,
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- cpu,
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- timer_interrupt,
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- IRQF_DISABLED|IRQF_TIMER|IRQF_NOBALANCING,
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- timer_name[cpu],
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- NULL);
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+ irq = bind_virq_to_irqaction(VIRQ_TIMER, cpu, &timer_action);
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if (irq < 0)
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return irq;
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- per_cpu(timer_irq, cpu) = irq;
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+ BUG_ON(timer_irq != irq);
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return 0;
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}
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@@ -873,7 +863,7 @@ int __cpuinit local_setup_timer(unsigned
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void __cpuinit local_teardown_timer(unsigned int cpu)
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{
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BUG_ON(cpu == 0);
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- unbind_from_irqhandler(per_cpu(timer_irq, cpu), NULL);
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+ unbind_from_per_cpu_irq(timer_irq, cpu, &timer_action);
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}
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#endif
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--- head-2011-02-17.orig/drivers/xen/core/evtchn.c 2011-02-15 17:52:39.000000000 +0100
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+++ head-2011-02-17/drivers/xen/core/evtchn.c 2011-02-16 08:29:06.000000000 +0100
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@@ -59,6 +59,23 @@ static DEFINE_SPINLOCK(irq_mapping_updat
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static int evtchn_to_irq[NR_EVENT_CHANNELS] = {
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[0 ... NR_EVENT_CHANNELS-1] = -1 };
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+#if defined(CONFIG_SMP) && defined(CONFIG_X86)
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+static struct percpu_irqaction {
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+ struct irqaction action; /* must be first */
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+ struct percpu_irqaction *next;
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+ cpumask_var_t cpus;
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+} *virq_actions[NR_VIRQS];
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+/* IRQ <-> VIRQ mapping. */
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+static DECLARE_BITMAP(virq_per_cpu, NR_VIRQS) __read_mostly;
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+static DEFINE_PER_CPU_READ_MOSTLY(int[NR_VIRQS], virq_to_evtchn);
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+#define BUG_IF_VIRQ_PER_CPU(irq_cfg) \
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+ BUG_ON(type_from_irq_cfg(irq_cfg) == IRQT_VIRQ \
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+ && test_bit(index_from_irq_cfg(irq_cfg), virq_per_cpu))
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+#else
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+#define BUG_IF_VIRQ_PER_CPU(irq_cfg) ((void)0)
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+#define PER_CPU_VIRQ_IRQ
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+#endif
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+
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/* IRQ <-> IPI mapping. */
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#if defined(CONFIG_SMP) && defined(CONFIG_X86)
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static int __read_mostly ipi_irq = -1;
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@@ -160,21 +177,34 @@ static inline unsigned int type_from_irq
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return cfg ? type_from_irq_cfg(cfg) : IRQT_UNBOUND;
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}
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-#ifndef PER_CPU_IPI_IRQ
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static inline unsigned int evtchn_from_per_cpu_irq(const struct irq_cfg *cfg,
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unsigned int cpu)
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{
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- BUG_ON(type_from_irq_cfg(cfg) != IRQT_IPI);
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- return per_cpu(ipi_evtchn, cpu);
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-}
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+ switch (type_from_irq_cfg(cfg)) {
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+#ifndef PER_CPU_VIRQ_IRQ
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+ case IRQT_VIRQ:
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+ return per_cpu(virq_to_evtchn, cpu)[index_from_irq_cfg(cfg)];
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+#endif
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+#ifndef PER_CPU_IPI_IRQ
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+ case IRQT_IPI:
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+ return per_cpu(ipi_evtchn, cpu);
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#endif
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+ }
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+ BUG();
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+ return 0;
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+}
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static inline unsigned int evtchn_from_irq_cfg(const struct irq_cfg *cfg)
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{
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+ switch (type_from_irq_cfg(cfg)) {
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+#ifndef PER_CPU_VIRQ_IRQ
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+ case IRQT_VIRQ:
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+#endif
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#ifndef PER_CPU_IPI_IRQ
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- if (type_from_irq_cfg(cfg) == IRQT_IPI)
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- return evtchn_from_per_cpu_irq(cfg, smp_processor_id());
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+ case IRQT_IPI:
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#endif
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+ return evtchn_from_per_cpu_irq(cfg, smp_processor_id());
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+ }
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return cfg->info & ((1U << _EVTCHN_BITS) - 1);
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}
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@@ -357,13 +387,22 @@ asmlinkage void __irq_entry evtchn_do_up
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* hardirq handlers see an up-to-date system time even if we
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* have just woken from a long idle period.
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*/
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+#ifdef PER_CPU_VIRQ_IRQ
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if ((irq = percpu_read(virq_to_irq[VIRQ_TIMER])) != -1) {
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port = evtchn_from_irq(irq);
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+#else
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+ port = percpu_read(virq_to_evtchn[VIRQ_TIMER]);
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+ if (VALID_EVTCHN(port)) {
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+#endif
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l1i = port / BITS_PER_LONG;
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l2i = port % BITS_PER_LONG;
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if (active_evtchns(l1i) & (1ul<<l2i)) {
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mask_evtchn(port);
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clear_evtchn(port);
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+#ifndef PER_CPU_VIRQ_IRQ
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+ irq = evtchn_to_irq[port];
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+ BUG_ON(irq == -1);
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+#endif
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if (!handle_irq(irq, regs))
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BUG();
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}
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@@ -588,6 +627,14 @@ static int bind_virq_to_irq(unsigned int
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evtchn = bind_virq.port;
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evtchn_to_irq[evtchn] = irq;
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+#ifndef PER_CPU_VIRQ_IRQ
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+ {
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+ unsigned int cpu;
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+
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+ for_each_possible_cpu(cpu)
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+ per_cpu(virq_to_evtchn, cpu)[virq] = evtchn;
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+ }
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+#endif
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cfg->info = mk_irq_info(IRQT_VIRQ, virq, evtchn);
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per_cpu(virq_to_irq, cpu)[virq] = irq;
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@@ -646,7 +693,9 @@ static void unbind_from_irq(unsigned int
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struct irq_cfg *cfg = irq_cfg(irq);
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int evtchn = evtchn_from_irq_cfg(cfg);
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+ BUG_IF_VIRQ_PER_CPU(cfg);
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BUG_IF_IPI(cfg);
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+
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spin_lock(&irq_mapping_update_lock);
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if (!--cfg->bindcount && VALID_EVTCHN(evtchn)) {
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@@ -658,6 +707,11 @@ static void unbind_from_irq(unsigned int
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case IRQT_VIRQ:
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per_cpu(virq_to_irq, cpu_from_evtchn(evtchn))
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[index_from_irq_cfg(cfg)] = -1;
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+#ifndef PER_CPU_VIRQ_IRQ
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+ for_each_possible_cpu(cpu)
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+ per_cpu(virq_to_evtchn, cpu)
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+ [index_from_irq_cfg(cfg)] = 0;
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+#endif
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break;
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#if defined(CONFIG_SMP) && defined(PER_CPU_IPI_IRQ)
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case IRQT_IPI:
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@@ -691,13 +745,34 @@ static void unbind_from_irq(unsigned int
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spin_unlock(&irq_mapping_update_lock);
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}
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-#ifndef PER_CPU_IPI_IRQ
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-void unbind_from_per_cpu_irq(unsigned int irq, unsigned int cpu)
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+#if !defined(PER_CPU_IPI_IRQ) || !defined(PER_CPU_VIRQ_IRQ)
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+static inline struct percpu_irqaction *alloc_percpu_irqaction(gfp_t gfp)
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+{
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+ struct percpu_irqaction *new = kzalloc(sizeof(*new), GFP_ATOMIC);
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+
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+ if (new && !zalloc_cpumask_var(&new->cpus, gfp)) {
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+ kfree(new);
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+ new = NULL;
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+ }
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+ return new;
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+}
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+
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+static inline void free_percpu_irqaction(struct percpu_irqaction *action)
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+{
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+ if (!action)
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+ return;
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+ free_cpumask_var(action->cpus);
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+ kfree(action);
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+}
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+
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+void unbind_from_per_cpu_irq(unsigned int irq, unsigned int cpu,
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+ struct irqaction *action)
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{
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struct evtchn_close close;
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struct irq_data *data = irq_get_irq_data(irq);
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struct irq_cfg *cfg = irq_data_cfg(data);
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int evtchn = evtchn_from_per_cpu_irq(cfg, cpu);
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+ struct percpu_irqaction *free_action = NULL;
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spin_lock(&irq_mapping_update_lock);
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@@ -706,6 +781,34 @@ void unbind_from_per_cpu_irq(unsigned in
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BUG_ON(cfg->bindcount <= 1);
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cfg->bindcount--;
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+
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+#ifndef PER_CPU_VIRQ_IRQ
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+ if (type_from_irq_cfg(cfg) == IRQT_VIRQ) {
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+ unsigned int virq = index_from_irq_cfg(cfg);
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+ struct percpu_irqaction *cur, *prev = NULL;
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+
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+ cur = virq_actions[virq];
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+ while (cur) {
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+ if (cur->action.dev_id == action) {
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+ cpumask_clear_cpu(cpu, cur->cpus);
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+ if (cpumask_empty(cur->cpus)) {
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+ WARN_ON(free_action);
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+ if (prev)
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+ prev->next = cur->next;
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+ else
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+ virq_actions[virq]
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+ = cur->next;
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+ free_action = cur;
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+ }
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+ } else if (cpumask_test_cpu(cpu, cur->cpus))
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+ evtchn = 0;
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+ cur = (prev = cur)->next;
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+ }
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+ if (!VALID_EVTCHN(evtchn))
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+ goto done;
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+ }
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+#endif
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+
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cpumask_clear_cpu(cpu, data->affinity);
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close.port = evtchn;
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@@ -713,9 +816,17 @@ void unbind_from_per_cpu_irq(unsigned in
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BUG();
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switch (type_from_irq_cfg(cfg)) {
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+#ifndef PER_CPU_VIRQ_IRQ
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+ case IRQT_VIRQ:
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+ per_cpu(virq_to_evtchn, cpu)
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+ [index_from_irq_cfg(cfg)] = 0;
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+ break;
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+#endif
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+#ifndef PER_CPU_IPI_IRQ
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case IRQT_IPI:
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per_cpu(ipi_evtchn, cpu) = 0;
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break;
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+#endif
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default:
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BUG();
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break;
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@@ -727,9 +838,18 @@ void unbind_from_per_cpu_irq(unsigned in
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evtchn_to_irq[evtchn] = -1;
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}
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+#ifndef PER_CPU_VIRQ_IRQ
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+done:
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+#endif
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spin_unlock(&irq_mapping_update_lock);
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+
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+ if (free_action) {
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+ free_irq(irq, free_action->action.dev_id);
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+ free_percpu_irqaction(free_action);
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+ }
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}
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-#endif /* !PER_CPU_IPI_IRQ */
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+EXPORT_SYMBOL_GPL(unbind_from_per_cpu_irq);
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+#endif /* !PER_CPU_IPI_IRQ || !PER_CPU_VIRQ_IRQ */
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int bind_caller_port_to_irqhandler(
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unsigned int caller_port,
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@@ -811,6 +931,10 @@ int bind_virq_to_irqhandler(
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{
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int irq, retval;
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+#ifndef PER_CPU_VIRQ_IRQ
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+ BUG_ON(test_bit(virq, virq_per_cpu));
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+#endif
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+
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irq = bind_virq_to_irq(virq, cpu);
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if (irq < 0)
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return irq;
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@@ -826,6 +950,109 @@ int bind_virq_to_irqhandler(
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EXPORT_SYMBOL_GPL(bind_virq_to_irqhandler);
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#ifdef CONFIG_SMP
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+#ifndef PER_CPU_VIRQ_IRQ
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+int bind_virq_to_irqaction(
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+ unsigned int virq,
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+ unsigned int cpu,
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+ struct irqaction *action)
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+{
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+ struct evtchn_bind_virq bind_virq;
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+ struct irq_cfg *cfg;
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+ int evtchn, irq, retval = 0;
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+ struct percpu_irqaction *cur = NULL, *new;
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+
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+ BUG_ON(!test_bit(virq, virq_per_cpu));
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+
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+ if (action->dev_id)
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+ return -EINVAL;
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+
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+ new = alloc_percpu_irqaction(GFP_ATOMIC);
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+ if (new) {
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+ new->action = *action;
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+ new->action.dev_id = action;
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+ }
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+
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+ spin_lock(&irq_mapping_update_lock);
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+
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+ for (cur = virq_actions[virq]; cur; cur = cur->next)
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+ if (cur->action.dev_id == action)
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+ break;
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+ if (!cur) {
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+ if (!new) {
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+ spin_unlock(&irq_mapping_update_lock);
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+ return -ENOMEM;
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+ }
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+ new->next = virq_actions[virq];
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+ virq_actions[virq] = cur = new;
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+ new = NULL;
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+ retval = 1;
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+ }
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+ cpumask_set_cpu(cpu, cur->cpus);
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+ action = &cur->action;
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+
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+ if ((irq = per_cpu(virq_to_irq, cpu)[virq]) == -1) {
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+ unsigned int nr;
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+
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+ BUG_ON(!retval);
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+
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+ if ((irq = find_unbound_irq(cpu_to_node(cpu), &cfg,
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+ &dynirq_chip, true)) < 0) {
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+ virq_actions[virq] = cur->next;
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+ spin_unlock(&irq_mapping_update_lock);
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+ free_percpu_irqaction(new);
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+ return irq;
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+ }
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+
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+ /* Extra reference so count will never drop to zero. */
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+ cfg->bindcount++;
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+
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+ for_each_possible_cpu(nr)
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+ per_cpu(virq_to_irq, nr)[virq] = irq;
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+ cfg->info = mk_irq_info(IRQT_VIRQ, virq, 0);
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+ } else
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+ cfg = irq_cfg(irq);
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+
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+ evtchn = per_cpu(virq_to_evtchn, cpu)[virq];
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+ if (!VALID_EVTCHN(evtchn)) {
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+ bind_virq.virq = virq;
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+ bind_virq.vcpu = cpu;
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+ if (HYPERVISOR_event_channel_op(EVTCHNOP_bind_virq,
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+ &bind_virq) != 0)
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+ BUG();
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+ evtchn = bind_virq.port;
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+ evtchn_to_irq[evtchn] = irq;
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+ per_cpu(virq_to_evtchn, cpu)[virq] = evtchn;
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+
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+ bind_evtchn_to_cpu(evtchn, cpu);
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+ }
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+
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+ cfg->bindcount++;
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+
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+ spin_unlock(&irq_mapping_update_lock);
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+
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+ free_percpu_irqaction(new);
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+
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+ if (retval == 0) {
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+ unsigned long flags;
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+
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+ local_irq_save(flags);
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+ unmask_evtchn(evtchn);
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+ local_irq_restore(flags);
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+ } else {
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+ action->flags |= IRQF_PERCPU;
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+ retval = setup_irq(irq, action);
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+ if (retval) {
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+ unbind_from_per_cpu_irq(irq, cpu, action);
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+ BUG_ON(retval > 0);
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+ irq = retval;
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+ }
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+ }
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+
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+ return irq;
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+}
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+EXPORT_SYMBOL_GPL(bind_virq_to_irqaction);
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+#endif
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+
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#ifdef PER_CPU_IPI_IRQ
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int bind_ipi_to_irqhandler(
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unsigned int ipi,
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@@ -905,7 +1132,7 @@ int __cpuinit bind_ipi_to_irqaction(
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action->flags |= IRQF_PERCPU | IRQF_NO_SUSPEND;
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retval = setup_irq(ipi_irq, action);
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if (retval) {
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- unbind_from_per_cpu_irq(ipi_irq, cpu);
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+ unbind_from_per_cpu_irq(ipi_irq, cpu, NULL);
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BUG_ON(retval > 0);
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ipi_irq = retval;
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}
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@@ -941,7 +1168,9 @@ static void rebind_irq_to_cpu(struct irq
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const struct irq_cfg *cfg = irq_data_cfg(data);
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int evtchn = evtchn_from_irq_cfg(cfg);
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+ BUG_IF_VIRQ_PER_CPU(cfg);
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BUG_IF_IPI(cfg);
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+
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if (VALID_EVTCHN(evtchn))
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rebind_evtchn_to_cpu(evtchn, tcpu);
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}
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@@ -1233,7 +1462,9 @@ void notify_remote_via_irq(int irq)
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if (WARN_ON_ONCE(!cfg))
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return;
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+ BUG_ON(type_from_irq_cfg(cfg) == IRQT_VIRQ);
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BUG_IF_IPI(cfg);
|
|
+
|
|
evtchn = evtchn_from_irq_cfg(cfg);
|
|
if (VALID_EVTCHN(evtchn))
|
|
notify_remote_via_evtchn(evtchn);
|
|
@@ -1246,6 +1477,7 @@ int irq_to_evtchn_port(int irq)
|
|
|
|
if (!cfg)
|
|
return 0;
|
|
+ BUG_IF_VIRQ_PER_CPU(cfg);
|
|
BUG_IF_IPI(cfg);
|
|
return evtchn_from_irq_cfg(cfg);
|
|
}
|
|
@@ -1313,6 +1545,12 @@ static void restore_cpu_virqs(unsigned i
|
|
if ((irq = per_cpu(virq_to_irq, cpu)[virq]) == -1)
|
|
continue;
|
|
|
|
+#ifndef PER_CPU_VIRQ_IRQ
|
|
+ if (test_bit(virq, virq_per_cpu)
|
|
+ && !VALID_EVTCHN(per_cpu(virq_to_evtchn, cpu)[virq]))
|
|
+ continue;
|
|
+#endif
|
|
+
|
|
BUG_ON(irq_cfg(irq)->info != mk_irq_info(IRQT_VIRQ, virq, 0));
|
|
|
|
/* Get a new binding from Xen. */
|
|
@@ -1325,7 +1563,20 @@ static void restore_cpu_virqs(unsigned i
|
|
|
|
/* Record the new mapping. */
|
|
evtchn_to_irq[evtchn] = irq;
|
|
+#ifdef PER_CPU_VIRQ_IRQ
|
|
irq_cfg(irq)->info = mk_irq_info(IRQT_VIRQ, virq, evtchn);
|
|
+#else
|
|
+ if (test_bit(virq, virq_per_cpu))
|
|
+ per_cpu(virq_to_evtchn, cpu)[virq] = evtchn;
|
|
+ else {
|
|
+ unsigned int cpu;
|
|
+
|
|
+ irq_cfg(irq)->info = mk_irq_info(IRQT_VIRQ, virq,
|
|
+ evtchn);
|
|
+ for_each_possible_cpu(cpu)
|
|
+ per_cpu(virq_to_evtchn, cpu)[virq] = evtchn;
|
|
+ }
|
|
+#endif
|
|
bind_evtchn_to_cpu(evtchn, cpu);
|
|
|
|
/* Ready for use. */
|
|
@@ -1389,7 +1640,11 @@ static int evtchn_resume(struct sys_devi
|
|
|
|
/* Avoid doing anything in the 'suspend cancelled' case. */
|
|
status.dom = DOMID_SELF;
|
|
+#ifdef PER_CPU_VIRQ_IRQ
|
|
status.port = evtchn_from_irq(percpu_read(virq_to_irq[VIRQ_TIMER]));
|
|
+#else
|
|
+ status.port = percpu_read(virq_to_evtchn[VIRQ_TIMER]);
|
|
+#endif
|
|
if (HYPERVISOR_event_channel_op(EVTCHNOP_status, &status))
|
|
BUG();
|
|
if (status.status == EVTCHNSTAT_virq
|
|
@@ -1666,6 +1921,15 @@ void __init xen_init_IRQ(void)
|
|
unsigned int i;
|
|
struct physdev_pirq_eoi_gmfn eoi_gmfn;
|
|
|
|
+#ifndef PER_CPU_VIRQ_IRQ
|
|
+ __set_bit(VIRQ_TIMER, virq_per_cpu);
|
|
+ __set_bit(VIRQ_DEBUG, virq_per_cpu);
|
|
+ __set_bit(VIRQ_XENOPROF, virq_per_cpu);
|
|
+#ifdef CONFIG_IA64
|
|
+ __set_bit(VIRQ_ITC, virq_per_cpu);
|
|
+#endif
|
|
+#endif
|
|
+
|
|
init_evtchn_cpu_bindings();
|
|
|
|
#ifdef CONFIG_SPARSE_IRQ
|
|
--- head-2011-02-17.orig/drivers/xen/core/smpboot.c 2011-03-03 16:14:20.000000000 +0100
|
|
+++ head-2011-02-17/drivers/xen/core/smpboot.c 2011-03-03 16:14:51.000000000 +0100
|
|
@@ -125,7 +125,7 @@ static int __cpuinit xen_smp_intr_init(u
|
|
fail:
|
|
xen_spinlock_cleanup(cpu);
|
|
unbind_ipi:
|
|
- unbind_from_per_cpu_irq(ipi_irq, cpu);
|
|
+ unbind_from_per_cpu_irq(ipi_irq, cpu, NULL);
|
|
return rc;
|
|
}
|
|
|
|
@@ -135,7 +135,7 @@ static void __cpuinit xen_smp_intr_exit(
|
|
if (cpu != 0)
|
|
local_teardown_timer(cpu);
|
|
|
|
- unbind_from_per_cpu_irq(ipi_irq, cpu);
|
|
+ unbind_from_per_cpu_irq(ipi_irq, cpu, NULL);
|
|
xen_spinlock_cleanup(cpu);
|
|
}
|
|
#endif
|
|
--- head-2011-02-17.orig/drivers/xen/netback/netback.c 2011-03-01 11:52:43.000000000 +0100
|
|
+++ head-2011-02-17/drivers/xen/netback/netback.c 2011-03-01 11:53:15.000000000 +0100
|
|
@@ -1630,6 +1630,12 @@ static irqreturn_t netif_be_dbg(int irq,
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
+
|
|
+static struct irqaction netif_be_dbg_action = {
|
|
+ .handler = netif_be_dbg,
|
|
+ .flags = IRQF_SHARED,
|
|
+ .name = "net-be-dbg"
|
|
+};
|
|
#endif
|
|
|
|
static int __init netback_init(void)
|
|
@@ -1689,12 +1695,9 @@ static int __init netback_init(void)
|
|
netif_xenbus_init();
|
|
|
|
#ifdef NETBE_DEBUG_INTERRUPT
|
|
- (void)bind_virq_to_irqhandler(VIRQ_DEBUG,
|
|
- 0,
|
|
- netif_be_dbg,
|
|
- IRQF_SHARED,
|
|
- "net-be-dbg",
|
|
- &netif_be_dbg);
|
|
+ (void)bind_virq_to_irqaction(VIRQ_DEBUG,
|
|
+ 0,
|
|
+ &netif_be_dbg_action);
|
|
#endif
|
|
|
|
return 0;
|
|
--- head-2011-02-17.orig/drivers/xen/xenoprof/xenoprofile.c 2011-02-01 14:42:26.000000000 +0100
|
|
+++ head-2011-02-17/drivers/xen/xenoprof/xenoprofile.c 2010-09-09 16:53:30.000000000 +0200
|
|
@@ -209,6 +209,11 @@ static irqreturn_t xenoprof_ovf_interrup
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
+static struct irqaction ovf_action = {
|
|
+ .handler = xenoprof_ovf_interrupt,
|
|
+ .flags = IRQF_DISABLED,
|
|
+ .name = "xenoprof"
|
|
+};
|
|
|
|
static void unbind_virq(void)
|
|
{
|
|
@@ -216,7 +221,7 @@ static void unbind_virq(void)
|
|
|
|
for_each_online_cpu(i) {
|
|
if (ovf_irq[i] >= 0) {
|
|
- unbind_from_irqhandler(ovf_irq[i], NULL);
|
|
+ unbind_from_per_cpu_irq(ovf_irq[i], i, &ovf_action);
|
|
ovf_irq[i] = -1;
|
|
}
|
|
}
|
|
@@ -229,12 +234,7 @@ static int bind_virq(void)
|
|
int result;
|
|
|
|
for_each_online_cpu(i) {
|
|
- result = bind_virq_to_irqhandler(VIRQ_XENOPROF,
|
|
- i,
|
|
- xenoprof_ovf_interrupt,
|
|
- IRQF_DISABLED|IRQF_NOBALANCING,
|
|
- "xenoprof",
|
|
- NULL);
|
|
+ result = bind_virq_to_irqaction(VIRQ_XENOPROF, i, &ovf_action);
|
|
|
|
if (result < 0) {
|
|
unbind_virq();
|
|
--- head-2011-02-17.orig/include/xen/evtchn.h 2011-02-02 15:09:43.000000000 +0100
|
|
+++ head-2011-02-17/include/xen/evtchn.h 2010-11-23 16:18:23.000000000 +0100
|
|
@@ -94,6 +94,17 @@ int bind_virq_to_irqhandler(
|
|
unsigned long irqflags,
|
|
const char *devname,
|
|
void *dev_id);
|
|
+#if defined(CONFIG_SMP) && defined(CONFIG_XEN) && defined(CONFIG_X86)
|
|
+int bind_virq_to_irqaction(
|
|
+ unsigned int virq,
|
|
+ unsigned int cpu,
|
|
+ struct irqaction *action);
|
|
+#else
|
|
+#define bind_virq_to_irqaction(virq, cpu, action) \
|
|
+ bind_virq_to_irqhandler(virq, cpu, (action)->handler, \
|
|
+ (action)->flags | IRQF_NOBALANCING, \
|
|
+ (action)->name, action)
|
|
+#endif
|
|
#if defined(CONFIG_SMP) && !defined(MODULE)
|
|
#ifndef CONFIG_X86
|
|
int bind_ipi_to_irqhandler(
|
|
@@ -118,9 +129,13 @@ DECLARE_PER_CPU(DECLARE_BITMAP(, NR_IPIS
|
|
*/
|
|
void unbind_from_irqhandler(unsigned int irq, void *dev_id);
|
|
|
|
-#if defined(CONFIG_SMP) && !defined(MODULE) && defined(CONFIG_X86)
|
|
+#if defined(CONFIG_SMP) && defined(CONFIG_XEN) && defined(CONFIG_X86)
|
|
/* Specialized unbind function for per-CPU IRQs. */
|
|
-void unbind_from_per_cpu_irq(unsigned int irq, unsigned int cpu);
|
|
+void unbind_from_per_cpu_irq(unsigned int irq, unsigned int cpu,
|
|
+ struct irqaction *);
|
|
+#else
|
|
+#define unbind_from_per_cpu_irq(irq, cpu, action) \
|
|
+ unbind_from_irqhandler(irq, action)
|
|
#endif
|
|
|
|
#ifndef CONFIG_XEN
|