[PATCH 1/3] sched,time: count actually elapsed irq & softirq time

From: Rik van Riel Currently, if there was any irq or softirq time during 'ticks' jiffies, the entire period will be accounted as irq or softirq time. This is inaccurate if only a subset of the time was actually spent handling irqs, and could conceivably mis-count all of the

[PATCH 1/3] sched,time: count actually elapsed irq & softirq time

From: Rik van Riel Currently, if there was any irq or softirq time during 'ticks' jiffies, the entire period will be accounted as irq or softirq time. This is inaccurate if only a subset of the time was actually spent handling irqs, and could conceivably mis-count all of the ticks during a