irqtime_enabled
if (irqtime_enabled()) {
if (irqtime_enabled())
(irqtime_enabled() || vtime_accounting_enabled_this_cpu()))
if (!irqtime_enabled())
if (irqtime_enabled()) {
if (static_branch_likely(&psi_disabled) || !irqtime_enabled())
if (!irqtime_enabled() && res == PSI_IRQ)