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parisc: Hide SMP irq accounting on UP systems

PATCH New Helge Deller 1 participant 1 message Jan 4, 2019 PA-RISC architecture

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Helge Deller

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PATCH 1/1 parisc: Hide SMP irq accounting on UP systems

Hide Rescheduling (RES) and Function call (CAL) interrupts when running a UP machine.

Signed-off-by Helge Deller <[email protected]>
arch/parisc/kernel/irq.c +10 -8
index fd6d8739e145..6f19f364c20a 100644
@@ -175,14 +175,16 @@ int arch_show_interrupts(struct seq_file *p, int prec)
 # endif
 #endif
 #ifdef CONFIG_SMP
-	seq_printf(p, "%*s: ", prec, "RES");
-	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");
+	if (num_online_cpus() > 1) {
+		seq_printf(p, "%*s: ", prec, "RES");
+		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)