UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

powerpc/time: account broadcast timer event interrupts separately 

These are not local timer interrupts but IPIs. It's good to be able
to see how timer offloading is behaving, so split these out into
their own category.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Nicholas Piggin 2018-05-05 03:19:35 +10:00 committed by Michael Ellerman
parent 21bfd6a8e9
commit e360cd37f0
3 changed files with 8 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/powerpc/include/asm/hardirq.h
View File

@ -8,6 +8,7 @@
typedef struct {
unsigned int __softirq_pending;
unsigned int timer_irqs_event;
unsigned int broadcast_irqs_event;
unsigned int timer_irqs_others;
unsigned int pmu_irqs;
unsigned int mce_exceptions;

6
arch/powerpc/kernel/irq.c
View File

@ -508,6 +508,11 @@ int arch_show_interrupts(struct seq_file *p, int prec)
seq_printf(p, "%10u ", per_cpu(irq_stat, j).timer_irqs_event);
seq_printf(p, " Local timer interrupts for timer event device\n");
seq_printf(p, "%*s: ", prec, "BCT");
for_each_online_cpu(j)
seq_printf(p, "%10u ", per_cpu(irq_stat, j).broadcast_irqs_event);
seq_printf(p, " Broadcast 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);
@ -567,6 +572,7 @@ u64 arch_irq_stat_cpu(unsigned int cpu)
{
u64 sum = per_cpu(irq_stat, cpu).timer_irqs_event;
sum += per_cpu(irq_stat, cpu).broadcast_irqs_event;
sum += per_cpu(irq_stat, cpu).pmu_irqs;
sum += per_cpu(irq_stat, cpu).mce_exceptions;
sum += per_cpu(irq_stat, cpu).spurious_irqs;

5
arch/powerpc/kernel/time.c
View File

@ -647,13 +647,10 @@ EXPORT_SYMBOL(timer_interrupt);
void timer_broadcast_interrupt(void)
{
u64 *next_tb = this_cpu_ptr(&decrementers_next_tb);
struct pt_regs *regs = get_irq_regs();
trace_timer_interrupt_entry(regs);
*next_tb = ~(u64)0;
tick_receive_broadcast();
__this_cpu_inc(irq_stat.timer_irqs_event);
trace_timer_interrupt_exit(regs);
__this_cpu_inc(irq_stat.broadcast_irqs_event);
}
#endif