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https://github.com/FEX-Emu/linux.git
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x86: cleanup show_interrupts
The sparseirq patches introduced some more ugliness in show_interrupts(). Clean it up all together and make the code easier to read by splitting out the "tail" function which prints the special interrupts. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner
Ingo Molnar
parent
d3c60047bd
commit
c0c168ca26
@ -263,22 +263,67 @@ atomic_t irq_err_count;
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* /proc/interrupts printing:
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*/
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static int show_other_interrupts(struct seq_file *p)
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{
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int j;
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seq_printf(p, "NMI: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", nmi_count(j));
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seq_printf(p, " Non-maskable interrupts\n");
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#ifdef CONFIG_X86_LOCAL_APIC
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seq_printf(p, "LOC: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", per_cpu(irq_stat,j).apic_timer_irqs);
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seq_printf(p, " Local timer interrupts\n");
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#endif
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#ifdef CONFIG_SMP
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seq_printf(p, "RES: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", per_cpu(irq_stat,j).irq_resched_count);
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seq_printf(p, " Rescheduling interrupts\n");
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seq_printf(p, "CAL: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", per_cpu(irq_stat,j).irq_call_count);
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seq_printf(p, " Function call interrupts\n");
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seq_printf(p, "TLB: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", per_cpu(irq_stat,j).irq_tlb_count);
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seq_printf(p, " TLB shootdowns\n");
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#endif
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#ifdef CONFIG_X86_MCE
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seq_printf(p, "TRM: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", per_cpu(irq_stat,j).irq_thermal_count);
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seq_printf(p, " Thermal event interrupts\n");
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#endif
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#ifdef CONFIG_X86_LOCAL_APIC
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seq_printf(p, "SPU: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", per_cpu(irq_stat,j).irq_spurious_count);
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seq_printf(p, " Spurious interrupts\n");
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#endif
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seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count));
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#if defined(CONFIG_X86_IO_APIC)
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seq_printf(p, "MIS: %10u\n", atomic_read(&irq_mis_count));
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#endif
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return 0;
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}
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int show_interrupts(struct seq_file *p, void *v)
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{
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unsigned long flags, any_count = 0;
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int i = *(loff_t *) v, j;
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struct irqaction * action;
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unsigned long flags;
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unsigned int entries;
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struct irq_desc *desc = NULL;
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int tail = 0;
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struct irqaction *action;
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struct irq_desc *desc;
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if (i > nr_irqs)
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return 0;
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entries = nr_irqs - 1;
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i = *(loff_t *) v;
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if (i == nr_irqs)
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tail = 1;
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else
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desc = irq_to_desc(i);
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return show_other_interrupts(p);
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/* print header */
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if (i == 0) {
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seq_printf(p, " ");
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for_each_online_cpu(j)
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@ -286,88 +331,37 @@ int show_interrupts(struct seq_file *p, void *v)
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seq_putc(p, '\n');
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}
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if (i <= entries) {
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unsigned any_count = 0;
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spin_lock_irqsave(&desc->lock, flags);
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desc = irq_to_desc(i);
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spin_lock_irqsave(&desc->lock, flags);
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#ifndef CONFIG_SMP
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any_count = kstat_irqs(i);
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any_count = kstat_irqs(i);
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#else
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for_each_online_cpu(j)
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any_count |= kstat_irqs_cpu(i, j);
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for_each_online_cpu(j)
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any_count |= kstat_irqs_cpu(i, j);
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#endif
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action = desc->action;
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if (!action && !any_count)
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goto skip;
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seq_printf(p, "%3d: ", i);
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action = desc->action;
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if (!action && !any_count)
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goto out;
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seq_printf(p, "%3d: ", i);
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#ifndef CONFIG_SMP
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seq_printf(p, "%10u ", kstat_irqs(i));
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seq_printf(p, "%10u ", kstat_irqs(i));
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#else
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", kstat_irqs_cpu(i, j));
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", kstat_irqs_cpu(i, j));
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#endif
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seq_printf(p, " %8s", desc->chip->name);
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seq_printf(p, "-%-8s", desc->name);
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seq_printf(p, " %8s", desc->chip->name);
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seq_printf(p, "-%-8s", desc->name);
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if (action) {
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seq_printf(p, " %s", action->name);
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while ((action = action->next) != NULL)
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seq_printf(p, ", %s", action->name);
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}
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seq_putc(p, '\n');
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skip:
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spin_unlock_irqrestore(&desc->lock, flags);
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if (action) {
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seq_printf(p, " %s", action->name);
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while ((action = action->next) != NULL)
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seq_printf(p, ", %s", action->name);
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}
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if (tail) {
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seq_printf(p, "NMI: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", nmi_count(j));
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seq_printf(p, " Non-maskable interrupts\n");
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#ifdef CONFIG_X86_LOCAL_APIC
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seq_printf(p, "LOC: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ",
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per_cpu(irq_stat,j).apic_timer_irqs);
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seq_printf(p, " Local timer interrupts\n");
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#endif
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#ifdef CONFIG_SMP
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seq_printf(p, "RES: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ",
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per_cpu(irq_stat,j).irq_resched_count);
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seq_printf(p, " Rescheduling interrupts\n");
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seq_printf(p, "CAL: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ",
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per_cpu(irq_stat,j).irq_call_count);
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seq_printf(p, " Function call interrupts\n");
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seq_printf(p, "TLB: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ",
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per_cpu(irq_stat,j).irq_tlb_count);
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seq_printf(p, " TLB shootdowns\n");
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#endif
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#ifdef CONFIG_X86_MCE
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seq_printf(p, "TRM: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ",
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per_cpu(irq_stat,j).irq_thermal_count);
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seq_printf(p, " Thermal event interrupts\n");
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#endif
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#ifdef CONFIG_X86_LOCAL_APIC
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seq_printf(p, "SPU: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ",
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per_cpu(irq_stat,j).irq_spurious_count);
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seq_printf(p, " Spurious interrupts\n");
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#endif
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seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count));
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#if defined(CONFIG_X86_IO_APIC)
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seq_printf(p, "MIS: %10u\n", atomic_read(&irq_mis_count));
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#endif
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}
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seq_putc(p, '\n');
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out:
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spin_unlock_irqrestore(&desc->lock, flags);
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return 0;
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}
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@ -68,22 +68,65 @@ static inline void stack_overflow_check(struct pt_regs *regs)
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* Generic, controller-independent functions:
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*/
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static int show_other_interrupts(struct seq_file *p)
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{
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int j;
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seq_printf(p, "NMI: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", cpu_pda(j)->__nmi_count);
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seq_printf(p, " Non-maskable interrupts\n");
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seq_printf(p, "LOC: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", cpu_pda(j)->apic_timer_irqs);
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seq_printf(p, " Local timer interrupts\n");
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#ifdef CONFIG_SMP
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seq_printf(p, "RES: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", cpu_pda(j)->irq_resched_count);
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seq_printf(p, " Rescheduling interrupts\n");
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seq_printf(p, "CAL: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", cpu_pda(j)->irq_call_count);
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seq_printf(p, " Function call interrupts\n");
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seq_printf(p, "TLB: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", cpu_pda(j)->irq_tlb_count);
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seq_printf(p, " TLB shootdowns\n");
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#endif
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#ifdef CONFIG_X86_MCE
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seq_printf(p, "TRM: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", cpu_pda(j)->irq_thermal_count);
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seq_printf(p, " Thermal event interrupts\n");
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seq_printf(p, "THR: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", cpu_pda(j)->irq_threshold_count);
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seq_printf(p, " Threshold APIC interrupts\n");
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#endif
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seq_printf(p, "SPU: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", cpu_pda(j)->irq_spurious_count);
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seq_printf(p, " Spurious interrupts\n");
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seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count));
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return 0;
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}
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int show_interrupts(struct seq_file *p, void *v)
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{
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int i, j;
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struct irqaction * action;
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unsigned long flags;
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unsigned int entries;
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struct irq_desc *desc = NULL;
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int tail = 0;
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unsigned long flags, any_count = 0;
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int i = *(loff_t *) v, j;
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struct irqaction *action;
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struct irq_desc *desc;
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if (i > nr_irqs)
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return 0;
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entries = nr_irqs - 1;
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i = *(loff_t *) v;
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if (i == nr_irqs)
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tail = 1;
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else
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desc = irq_to_desc(i);
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return show_other_interrupts(p);
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/* print header */
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if (i == 0) {
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seq_printf(p, " ");
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for_each_online_cpu(j)
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@ -91,79 +134,37 @@ int show_interrupts(struct seq_file *p, void *v)
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seq_putc(p, '\n');
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}
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if (i <= entries) {
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unsigned any_count = 0;
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spin_lock_irqsave(&desc->lock, flags);
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desc = irq_to_desc(i);
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spin_lock_irqsave(&desc->lock, flags);
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#ifndef CONFIG_SMP
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any_count = kstat_irqs(i);
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any_count = kstat_irqs(i);
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#else
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for_each_online_cpu(j)
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any_count |= kstat_irqs_cpu(i, j);
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for_each_online_cpu(j)
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any_count |= kstat_irqs_cpu(i, j);
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#endif
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action = desc->action;
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if (!action && !any_count)
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goto skip;
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seq_printf(p, "%3d: ", i);
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#ifndef CONFIG_SMP
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seq_printf(p, "%10u ", kstat_irqs(i));
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#else
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", kstat_irqs_cpu(i, j));
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#endif
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seq_printf(p, " %8s", desc->chip->name);
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seq_printf(p, "-%-8s", desc->name);
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action = desc->action;
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if (!action && !any_count)
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goto out;
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if (action) {
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seq_printf(p, " %s", action->name);
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while ((action = action->next) != NULL)
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seq_printf(p, ", %s", action->name);
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}
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seq_putc(p, '\n');
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skip:
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spin_unlock_irqrestore(&desc->lock, flags);
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}
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if (tail) {
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seq_printf(p, "NMI: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", cpu_pda(j)->__nmi_count);
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seq_printf(p, " Non-maskable interrupts\n");
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seq_printf(p, "LOC: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", cpu_pda(j)->apic_timer_irqs);
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seq_printf(p, " Local timer interrupts\n");
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#ifdef CONFIG_SMP
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seq_printf(p, "RES: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", cpu_pda(j)->irq_resched_count);
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seq_printf(p, " Rescheduling interrupts\n");
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seq_printf(p, "CAL: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", cpu_pda(j)->irq_call_count);
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seq_printf(p, " Function call interrupts\n");
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seq_printf(p, "TLB: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", cpu_pda(j)->irq_tlb_count);
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seq_printf(p, " TLB shootdowns\n");
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#endif
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#ifdef CONFIG_X86_MCE
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seq_printf(p, "TRM: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", cpu_pda(j)->irq_thermal_count);
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seq_printf(p, " Thermal event interrupts\n");
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seq_printf(p, "THR: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", cpu_pda(j)->irq_threshold_count);
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seq_printf(p, " Threshold APIC interrupts\n");
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#endif
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seq_printf(p, "SPU: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", cpu_pda(j)->irq_spurious_count);
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seq_printf(p, " Spurious interrupts\n");
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seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count));
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seq_printf(p, "%3d: ", i);
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#ifndef CONFIG_SMP
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seq_printf(p, "%10u ", kstat_irqs(i));
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#else
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", kstat_irqs_cpu(i, j));
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#endif
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seq_printf(p, " %8s", desc->chip->name);
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seq_printf(p, "-%-8s", desc->name);
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if (action) {
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seq_printf(p, " %s", action->name);
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while ((action = action->next) != NULL)
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seq_printf(p, ", %s", action->name);
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}
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seq_putc(p, '\n');
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out:
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spin_unlock_irqrestore(&desc->lock, flags);
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return 0;
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}
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