* [PATCH] parisc: Hide SMP irq accounting on UP systems
@ 2019-01-04 23:36 Helge Deller
0 siblings, 0 replies; only message in thread
From: Helge Deller @ 2019-01-04 23:36 UTC (permalink / raw)
To: linux-parisc, James Bottomley, John David Anglin
Hide Rescheduling (RES) and Function call (CAL) interrupts when
running a UP machine.
Signed-off-by: Helge Deller <deller@gmx.de>
diff --git a/arch/parisc/kernel/irq.c b/arch/parisc/kernel/irq.c
index fd6d8739e145..6f19f364c20a 100644
--- a/arch/parisc/kernel/irq.c
+++ b/arch/parisc/kernel/irq.c
@@ -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)
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