On Fri, Aug 26, 2022 at 12:41:08AM +0800, Chengming Zhou wrote: > Now PSI already tracked workload pressure stall information for > CPU, memory and IO. Apart from these, IRQ/SOFTIRQ could have > obvious impact on some workload productivity, such as web service > workload. > > When CONFIG_IRQ_TIME_ACCOUNTING, we can get IRQ/SOFTIRQ delta time > from update_rq_clock_task(), in which we can record that delta > to CPU curr task's cgroups as PSI_IRQ_FULL status. > > Note we don't use PSI_IRQ_SOME since IRQ/SOFTIRQ always happen in > the current task on the CPU, make nothing productive could run > even if it were runnable, so we only use PSI_IRQ_FULL. > > Signed-off-by: Chengming Zhou <zhouchengming@xxxxxxxxxxxxx> Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>
