[SPARC64]: Implement atomic backoff.

[linux-2.6-omap-h63xx.git] / arch / x86 / kernel / irq_64.c

diff --git a/arch/x86/kernel/irq_64.c b/arch/x86/kernel/irq_64.c
index 39cb3fa83ebbe3e68af877a0f43074189b1c027a..6b5c730d67b9d36a184f8340e8c4fa2b5b55ede0 100644 (file)
--- a/arch/x86/kernel/irq_64.c
+++ b/arch/x86/kernel/irq_64.c
@@ -1,6 +1,4 @@
 /*
- *     linux/arch/x86_64/kernel/irq.c
- *
  *     Copyright (C) 1992, 1998 Linus Torvalds, Ingo Molnar
  *
  * This file contains the lowest level x86_64-specific interrupt
@@ -64,9 +62,17 @@ int show_interrupts(struct seq_file *p, void *v)
        }
 
        if (i < NR_IRQS) {
+               unsigned any_count = 0;
+
                spin_lock_irqsave(&irq_desc[i].lock, flags);
+#ifndef CONFIG_SMP
+               any_count = kstat_irqs(i);
+#else
+               for_each_online_cpu(j)
+                       any_count |= kstat_cpu(j).irqs[i];
+#endif
                action = irq_desc[i].action;
-               if (!action) 
+               if (!action && !any_count)
                        goto skip;
                seq_printf(p, "%3d: ",i);
 #ifndef CONFIG_SMP
@@ -78,9 +84,11 @@ int show_interrupts(struct seq_file *p, void *v)
                seq_printf(p, " %8s", irq_desc[i].chip->name);
                seq_printf(p, "-%-8s", irq_desc[i].name);
 
-               seq_printf(p, "  %s", action->name);
-               for (action=action->next; action; action = action->next)
-                       seq_printf(p, ", %s", action->name);
+               if (action) {
+                       seq_printf(p, "  %s", action->name);
+                       while ((action = action->next) != NULL)
+                               seq_printf(p, ", %s", action->name);
+               }
                seq_putc(p, '\n');
 skip:
                spin_unlock_irqrestore(&irq_desc[i].lock, flags);
@@ -88,11 +96,37 @@ skip:
                seq_printf(p, "NMI: ");
                for_each_online_cpu(j)
                        seq_printf(p, "%10u ", cpu_pda(j)->__nmi_count);
-               seq_putc(p, '\n');
+               seq_printf(p, "  Non-maskable interrupts\n");
                seq_printf(p, "LOC: ");
                for_each_online_cpu(j)
                        seq_printf(p, "%10u ", cpu_pda(j)->apic_timer_irqs);
-               seq_putc(p, '\n');
+               seq_printf(p, "  Local timer interrupts\n");
+#ifdef CONFIG_SMP
+               seq_printf(p, "RES: ");
+               for_each_online_cpu(j)
+                       seq_printf(p, "%10u ", cpu_pda(j)->irq_resched_count);
+               seq_printf(p, "  Rescheduling interrupts\n");
+               seq_printf(p, "CAL: ");
+               for_each_online_cpu(j)
+                       seq_printf(p, "%10u ", cpu_pda(j)->irq_call_count);
+               seq_printf(p, "  function call interrupts\n");
+               seq_printf(p, "TLB: ");
+               for_each_online_cpu(j)
+                       seq_printf(p, "%10u ", cpu_pda(j)->irq_tlb_count);
+               seq_printf(p, "  TLB shootdowns\n");
+#endif
+               seq_printf(p, "TRM: ");
+               for_each_online_cpu(j)
+                       seq_printf(p, "%10u ", cpu_pda(j)->irq_thermal_count);
+               seq_printf(p, "  Thermal event interrupts\n");
+               seq_printf(p, "THR: ");
+               for_each_online_cpu(j)
+                       seq_printf(p, "%10u ", cpu_pda(j)->irq_threshold_count);
+               seq_printf(p, "  Threshold APIC interrupts\n");
+               seq_printf(p, "SPU: ");
+               for_each_online_cpu(j)
+                       seq_printf(p, "%10u ", cpu_pda(j)->irq_spurious_count);
+               seq_printf(p, "  Spurious interrupts\n");
                seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count));
        }
        return 0;
@@ -210,4 +244,3 @@ asmlinkage void do_softirq(void)
        }
        local_irq_restore(flags);
 }
-EXPORT_SYMBOL(do_softirq);