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powerpc/time: account broadcast timer event interrupts separately

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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
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5
arch/powerpc/kernel/time.c
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@@ -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