Re: [PATCH v5 2/4] sched: Add helper kstat_cpu_softirqs_sum()

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Hi,

On 11/4/2022 7:41 PM, Zhen Lei wrote:
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 90e2fdc17d79ff8..898076e173a928a 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];
  }

One header comment would have been good.

+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
   */

LGTM.
Reviewed-by: Mukesh Ojha <quic_mojha@xxxxxxxxxxx>

-Mukesh



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