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sched: Add helper kstat_cpu_softirqs_sum()
Add a kstat_cpu_softirqs_sum() function that is similar to kstat_cpu_irqs_sum(), but which counts software interrupts since boot on the specified CPU. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Cc: Josh Don <joshdon@google.com> Cc: Tejun Heo <tj@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
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@ -67,6 +67,17 @@ static inline unsigned int kstat_softirqs_cpu(unsigned int irq, int cpu)
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return kstat_cpu(cpu).softirqs[irq];
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}
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static inline unsigned int kstat_cpu_softirqs_sum(int cpu)
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{
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int i;
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unsigned int sum = 0;
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for (i = 0; i < NR_SOFTIRQS; i++)
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sum += kstat_softirqs_cpu(i, cpu);
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return sum;
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}
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/*
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* Number of interrupts per specific IRQ source, since bootup
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*/
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