mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-15 23:25:07 +00:00
powerpc: Make irq_stat.timers_irqs counting more specific
Current irq_stat.timers_irqs counting doesn't discriminate timer event handler and other timer interrupt(like arch_irq_work_raise). Sometimes we need to know exactly how much interrupts timer event handler fired, so let's be more specific on this. Signed-off-by: Fan Du <fan.du@windriver.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
parent
0ce636700c
commit
c041cfa2af
3 changed files with 13 additions and 5 deletions
|
@ -6,7 +6,8 @@
|
||||||
|
|
||||||
typedef struct {
|
typedef struct {
|
||||||
unsigned int __softirq_pending;
|
unsigned int __softirq_pending;
|
||||||
unsigned int timer_irqs;
|
unsigned int timer_irqs_event;
|
||||||
|
unsigned int timer_irqs_others;
|
||||||
unsigned int pmu_irqs;
|
unsigned int pmu_irqs;
|
||||||
unsigned int mce_exceptions;
|
unsigned int mce_exceptions;
|
||||||
unsigned int spurious_irqs;
|
unsigned int spurious_irqs;
|
||||||
|
|
|
@ -354,8 +354,13 @@ int arch_show_interrupts(struct seq_file *p, int prec)
|
||||||
|
|
||||||
seq_printf(p, "%*s: ", prec, "LOC");
|
seq_printf(p, "%*s: ", prec, "LOC");
|
||||||
for_each_online_cpu(j)
|
for_each_online_cpu(j)
|
||||||
seq_printf(p, "%10u ", per_cpu(irq_stat, j).timer_irqs);
|
seq_printf(p, "%10u ", per_cpu(irq_stat, j).timer_irqs_event);
|
||||||
seq_printf(p, " Local timer interrupts\n");
|
seq_printf(p, " Local timer interrupts for timer event device\n");
|
||||||
|
|
||||||
|
seq_printf(p, "%*s: ", prec, "LOC");
|
||||||
|
for_each_online_cpu(j)
|
||||||
|
seq_printf(p, "%10u ", per_cpu(irq_stat, j).timer_irqs_others);
|
||||||
|
seq_printf(p, " Local timer interrupts for others\n");
|
||||||
|
|
||||||
seq_printf(p, "%*s: ", prec, "SPU");
|
seq_printf(p, "%*s: ", prec, "SPU");
|
||||||
for_each_online_cpu(j)
|
for_each_online_cpu(j)
|
||||||
|
@ -389,11 +394,12 @@ int arch_show_interrupts(struct seq_file *p, int prec)
|
||||||
*/
|
*/
|
||||||
u64 arch_irq_stat_cpu(unsigned int cpu)
|
u64 arch_irq_stat_cpu(unsigned int cpu)
|
||||||
{
|
{
|
||||||
u64 sum = per_cpu(irq_stat, cpu).timer_irqs;
|
u64 sum = per_cpu(irq_stat, cpu).timer_irqs_event;
|
||||||
|
|
||||||
sum += per_cpu(irq_stat, cpu).pmu_irqs;
|
sum += per_cpu(irq_stat, cpu).pmu_irqs;
|
||||||
sum += per_cpu(irq_stat, cpu).mce_exceptions;
|
sum += per_cpu(irq_stat, cpu).mce_exceptions;
|
||||||
sum += per_cpu(irq_stat, cpu).spurious_irqs;
|
sum += per_cpu(irq_stat, cpu).spurious_irqs;
|
||||||
|
sum += per_cpu(irq_stat, cpu).timer_irqs_others;
|
||||||
#ifdef CONFIG_PPC_DOORBELL
|
#ifdef CONFIG_PPC_DOORBELL
|
||||||
sum += per_cpu(irq_stat, cpu).doorbell_irqs;
|
sum += per_cpu(irq_stat, cpu).doorbell_irqs;
|
||||||
#endif
|
#endif
|
||||||
|
|
|
@ -510,7 +510,6 @@ void timer_interrupt(struct pt_regs * regs)
|
||||||
*/
|
*/
|
||||||
may_hard_irq_enable();
|
may_hard_irq_enable();
|
||||||
|
|
||||||
__get_cpu_var(irq_stat).timer_irqs++;
|
|
||||||
|
|
||||||
#if defined(CONFIG_PPC32) && defined(CONFIG_PMAC)
|
#if defined(CONFIG_PPC32) && defined(CONFIG_PMAC)
|
||||||
if (atomic_read(&ppc_n_lost_interrupts) != 0)
|
if (atomic_read(&ppc_n_lost_interrupts) != 0)
|
||||||
|
@ -532,10 +531,12 @@ void timer_interrupt(struct pt_regs * regs)
|
||||||
*next_tb = ~(u64)0;
|
*next_tb = ~(u64)0;
|
||||||
if (evt->event_handler)
|
if (evt->event_handler)
|
||||||
evt->event_handler(evt);
|
evt->event_handler(evt);
|
||||||
|
__get_cpu_var(irq_stat).timer_irqs_event++;
|
||||||
} else {
|
} else {
|
||||||
now = *next_tb - now;
|
now = *next_tb - now;
|
||||||
if (now <= DECREMENTER_MAX)
|
if (now <= DECREMENTER_MAX)
|
||||||
set_dec((int)now);
|
set_dec((int)now);
|
||||||
|
__get_cpu_var(irq_stat).timer_irqs_others++;
|
||||||
}
|
}
|
||||||
|
|
||||||
#ifdef CONFIG_PPC64
|
#ifdef CONFIG_PPC64
|
||||||
|
|
Loading…
Reference in a new issue