[PATCH 1/3] sched: Add helper kstat_cpu_softirqs_sum()

From: Zhen Lei
Date: Mon Oct 17 2022 - 06:02:04 EST


Similar to kstat_cpu_irqs_sum(), it counts the sum of all software
interrupts on a specified CPU.

Signed-off-by: Zhen Lei <thunder.leizhen@xxxxxxxxxx>
---
include/linux/kernel_stat.h | 11 +++++++++++
1 file changed, 11 insertions(+)

diff --git a/include/linux/kernel_stat.h b/include/linux/kernel_stat.h
index ddb5a358fd829f4..61d427c1962bf1c 100644
--- a/include/linux/kernel_stat.h
+++ b/include/linux/kernel_stat.h
@@ -67,6 +67,17 @@ static inline unsigned int kstat_softirqs_cpu(unsigned int irq, int cpu)
return kstat_cpu(cpu).softirqs[irq];
}

+static inline unsigned int kstat_cpu_softirqs_sum(int cpu)
+{
+ int i;
+ unsigned int sum = 0;
+
+ for (i = 0; i < NR_SOFTIRQS; i++)
+ sum += kstat_softirqs_cpu(i, cpu);
+
+ return sum;
+}
+
/*
* Number of interrupts per specific IRQ source, since bootup
*/
--
2.25.1