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x86: cleanup show_interrupts

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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 2008-10-16 11:15:28 +02:00 committed by Ingo Molnar
parent d3c60047bd
commit c0c168ca26
2 changed files with 156 additions and 161 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

124
arch/x86/kernel/irq_32.c
View File

@ -263,22 +263,67 @@ atomic_t irq_err_count;
* /proc/interrupts printing: * /proc/interrupts printing:
*/ */
static int show_other_interrupts(struct seq_file *p)
{
int j;
seq_printf(p, "NMI: ");
for_each_online_cpu(j)
seq_printf(p, "%10u ", nmi_count(j));
seq_printf(p, " Non-maskable interrupts\n");
#ifdef CONFIG_X86_LOCAL_APIC
seq_printf(p, "LOC: ");
for_each_online_cpu(j)
seq_printf(p, "%10u ", per_cpu(irq_stat,j).apic_timer_irqs);
seq_printf(p, " Local timer interrupts\n");
#endif
#ifdef CONFIG_SMP
seq_printf(p, "RES: ");
for_each_online_cpu(j)
seq_printf(p, "%10u ", per_cpu(irq_stat,j).irq_resched_count);
seq_printf(p, " Rescheduling interrupts\n");
seq_printf(p, "CAL: ");
for_each_online_cpu(j)
seq_printf(p, "%10u ", per_cpu(irq_stat,j).irq_call_count);
seq_printf(p, " Function call interrupts\n");
seq_printf(p, "TLB: ");
for_each_online_cpu(j)
seq_printf(p, "%10u ", per_cpu(irq_stat,j).irq_tlb_count);
seq_printf(p, " TLB shootdowns\n");
#endif
#ifdef CONFIG_X86_MCE
seq_printf(p, "TRM: ");
for_each_online_cpu(j)
seq_printf(p, "%10u ", per_cpu(irq_stat,j).irq_thermal_count);
seq_printf(p, " Thermal event interrupts\n");
#endif
#ifdef CONFIG_X86_LOCAL_APIC
seq_printf(p, "SPU: ");
for_each_online_cpu(j)
seq_printf(p, "%10u ", per_cpu(irq_stat,j).irq_spurious_count);
seq_printf(p, " Spurious interrupts\n");
#endif
seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count));
#if defined(CONFIG_X86_IO_APIC)
seq_printf(p, "MIS: %10u\n", atomic_read(&irq_mis_count));
#endif
return 0;
}
int show_interrupts(struct seq_file *p, void *v) int show_interrupts(struct seq_file *p, void *v)
{ {
unsigned long flags, any_count = 0;
int i = *(loff_t *) v, j; int i = *(loff_t *) v, j;
struct irqaction * action; struct irqaction *action;
unsigned long flags; struct irq_desc *desc;
unsigned int entries;
struct irq_desc *desc = NULL; if (i > nr_irqs)
int tail = 0; return 0;
entries = nr_irqs - 1;
i = *(loff_t *) v;
if (i == nr_irqs) if (i == nr_irqs)
tail = 1; return show_other_interrupts(p);
else
desc = irq_to_desc(i);
/* print header */
if (i == 0) { if (i == 0) {
seq_printf(p, " "); seq_printf(p, " ");
for_each_online_cpu(j) for_each_online_cpu(j)
@ -286,9 +331,7 @@ int show_interrupts(struct seq_file *p, void *v)
seq_putc(p, '\n'); seq_putc(p, '\n');
} }
if (i <= entries) { desc = irq_to_desc(i);
unsigned any_count = 0;
spin_lock_irqsave(&desc->lock, flags); spin_lock_irqsave(&desc->lock, flags);
#ifndef CONFIG_SMP #ifndef CONFIG_SMP
any_count = kstat_irqs(i); any_count = kstat_irqs(i);
@ -298,7 +341,8 @@ int show_interrupts(struct seq_file *p, void *v)
#endif #endif
action = desc->action; action = desc->action;
if (!action && !any_count) if (!action && !any_count)
goto skip; goto out;
seq_printf(p, "%3d: ", i); seq_printf(p, "%3d: ", i);
#ifndef CONFIG_SMP #ifndef CONFIG_SMP
seq_printf(p, "%10u ", kstat_irqs(i)); seq_printf(p, "%10u ", kstat_irqs(i));
@ -316,58 +360,8 @@ int show_interrupts(struct seq_file *p, void *v)
} }
seq_putc(p, '\n'); seq_putc(p, '\n');
skip: out:
spin_unlock_irqrestore(&desc->lock, flags); spin_unlock_irqrestore(&desc->lock, flags);
}
if (tail) {
seq_printf(p, "NMI: ");
for_each_online_cpu(j)
seq_printf(p, "%10u ", nmi_count(j));
seq_printf(p, " Non-maskable interrupts\n");
#ifdef CONFIG_X86_LOCAL_APIC
seq_printf(p, "LOC: ");
for_each_online_cpu(j)
seq_printf(p, "%10u ",
per_cpu(irq_stat,j).apic_timer_irqs);
seq_printf(p, " Local timer interrupts\n");
#endif
#ifdef CONFIG_SMP
seq_printf(p, "RES: ");
for_each_online_cpu(j)
seq_printf(p, "%10u ",
per_cpu(irq_stat,j).irq_resched_count);
seq_printf(p, " Rescheduling interrupts\n");
seq_printf(p, "CAL: ");
for_each_online_cpu(j)
seq_printf(p, "%10u ",
per_cpu(irq_stat,j).irq_call_count);
seq_printf(p, " Function call interrupts\n");
seq_printf(p, "TLB: ");
for_each_online_cpu(j)
seq_printf(p, "%10u ",
per_cpu(irq_stat,j).irq_tlb_count);
seq_printf(p, " TLB shootdowns\n");
#endif
#ifdef CONFIG_X86_MCE
seq_printf(p, "TRM: ");
for_each_online_cpu(j)
seq_printf(p, "%10u ",
per_cpu(irq_stat,j).irq_thermal_count);
seq_printf(p, " Thermal event interrupts\n");
#endif
#ifdef CONFIG_X86_LOCAL_APIC
seq_printf(p, "SPU: ");
for_each_online_cpu(j)
seq_printf(p, "%10u ",
per_cpu(irq_stat,j).irq_spurious_count);
seq_printf(p, " Spurious interrupts\n");
#endif
seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count));
#if defined(CONFIG_X86_IO_APIC)
seq_printf(p, "MIS: %10u\n", atomic_read(&irq_mis_count));
#endif
}
return 0; return 0;
} }

111
arch/x86/kernel/irq_64.c
View File

@ -68,63 +68,10 @@ static inline void stack_overflow_check(struct pt_regs *regs)
* Generic, controller-independent functions: * Generic, controller-independent functions:
*/ */
int show_interrupts(struct seq_file *p, void *v) static int show_other_interrupts(struct seq_file *p)
{ {
int i, j; int j;
struct irqaction * action;
unsigned long flags;
unsigned int entries;
struct irq_desc *desc = NULL;
int tail = 0;
entries = nr_irqs - 1;
i = *(loff_t *) v;
if (i == nr_irqs)
tail = 1;
else
desc = irq_to_desc(i);
if (i == 0) {
seq_printf(p, " ");
for_each_online_cpu(j)
seq_printf(p, "CPU%-8d",j);
seq_putc(p, '\n');
}
if (i <= entries) {
unsigned any_count = 0;
spin_lock_irqsave(&desc->lock, flags);
#ifndef CONFIG_SMP
any_count = kstat_irqs(i);
#else
for_each_online_cpu(j)
any_count |= kstat_irqs_cpu(i, j);
#endif
action = desc->action;
if (!action && !any_count)
goto skip;
seq_printf(p, "%3d: ", i);
#ifndef CONFIG_SMP
seq_printf(p, "%10u ", kstat_irqs(i));
#else
for_each_online_cpu(j)
seq_printf(p, "%10u ", kstat_irqs_cpu(i, j));
#endif
seq_printf(p, " %8s", desc->chip->name);
seq_printf(p, "-%-8s", desc->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(&desc->lock, flags);
}
if (tail) {
seq_printf(p, "NMI: "); seq_printf(p, "NMI: ");
for_each_online_cpu(j) for_each_online_cpu(j)
seq_printf(p, "%10u ", cpu_pda(j)->__nmi_count); seq_printf(p, "%10u ", cpu_pda(j)->__nmi_count);
@ -162,8 +109,62 @@ skip:
seq_printf(p, "%10u ", cpu_pda(j)->irq_spurious_count); seq_printf(p, "%10u ", cpu_pda(j)->irq_spurious_count);
seq_printf(p, " Spurious interrupts\n"); seq_printf(p, " Spurious interrupts\n");
seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count)); seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count));
return 0;
}
int show_interrupts(struct seq_file *p, void *v)
{
unsigned long flags, any_count = 0;
int i = *(loff_t *) v, j;
struct irqaction *action;
struct irq_desc *desc;
if (i > nr_irqs)
return 0;
if (i == nr_irqs)
return show_other_interrupts(p);
/* print header */
if (i == 0) {
seq_printf(p, " ");
for_each_online_cpu(j)
seq_printf(p, "CPU%-8d",j);
seq_putc(p, '\n');
} }
desc = irq_to_desc(i);
spin_lock_irqsave(&desc->lock, flags);
#ifndef CONFIG_SMP
any_count = kstat_irqs(i);
#else
for_each_online_cpu(j)
any_count |= kstat_irqs_cpu(i, j);
#endif
action = desc->action;
if (!action && !any_count)
goto out;
seq_printf(p, "%3d: ", i);
#ifndef CONFIG_SMP
seq_printf(p, "%10u ", kstat_irqs(i));
#else
for_each_online_cpu(j)
seq_printf(p, "%10u ", kstat_irqs_cpu(i, j));
#endif
seq_printf(p, " %8s", desc->chip->name);
seq_printf(p, "-%-8s", desc->name);
if (action) {
seq_printf(p, " %s", action->name);
while ((action = action->next) != NULL)
seq_printf(p, ", %s", action->name);
}
seq_putc(p, '\n');
out:
spin_unlock_irqrestore(&desc->lock, flags);
return 0; return 0;
} }