On Tue, Oct 08, 2024 at 02:19:50PM +0800, Yafang Shao wrote: > sched_clock_irqtime may be disabled due to the clock source, in which case > IRQ time should not be accounted. Let's add a conditional check to avoid > unnecessary logic. Makes sense. When disabled, irq_time_read() won't change over time, so there is nothing to account. We can save iterating the whole hierarchy on every tick and context switch. > Signed-off-by: Yafang Shao <laoar.shao@xxxxxxxxx> Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>
