parisc: Count IPI function calls

PATCH New Helge Deller 1 participant 1 message Dec 30, 2018 PA-RISC architecture

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Helge Deller

author maintainer

2018-12-30 13:02 UTC #0 lore raw

PATCH 1/1 parisc: Count IPI function calls

Like other platforms, count the number of IPI function calls and show it in /proc/interrupts.

Signed-off-by Helge Deller <[email protected]>

arch/parisc/include/asm/hardirq.h +1 -0

index 1a1235a9d533..7f7039516e53 100644
@@ -22,6 +22,7 @@ typedef struct {
 	unsigned int irq_stack_usage;
 #ifdef CONFIG_SMP
 	unsigned int irq_resched_count;
+	unsigned int irq_call_count;
 #endif
 	unsigned int irq_unaligned_count;
 	unsigned int irq_fpassist_count;

arch/parisc/kernel/irq.c +4 -0

index 0ca254085a66..e24a790815a5 100644
@@ -179,6 +180,10 @@ int arch_show_interrupts(struct seq_file *p, int prec)
 	for_each_online_cpu(j)
 		seq_printf(p, "%10u ", irq_stats(j)->irq_resched_count);
 	seq_puts(p, "  Rescheduling interrupts\n");
+	seq_printf(p, "%*s: ", prec, "CAL");
+	for_each_online_cpu(j)
+		seq_printf(p, "%10u ", irq_stats(j)->irq_call_count);
+	seq_puts(p, "  Function call interrupts\n");
 #endif
 	seq_printf(p, "%*s: ", prec, "UAH");
 	for_each_online_cpu(j)

arch/parisc/kernel/smp.c +1 -0

index 5e26dbede5fc..d9e2d69c9e48 100644
@@ -155,6 +155,7 @@ ipi_interrupt(int irq, void *dev_id)
 
 			case IPI_CALL_FUNC:
 				smp_debug(100, KERN_DEBUG "CPU%d IPI_CALL_FUNC\n", this_cpu);
+				inc_irq_stat(irq_call_count);
 				generic_smp_call_function_interrupt();
 				break;