irq -s will display kernel irq stats. This patch will hide data of
offline cpus
The original output is like below:
<cut>
crash> irq -s
CPU0 CPU1 CPU2 CPU3
0: 111 1 0 0 IO-APIC-edge timer
1: 71 149 140 155 IO-APIC-edge i8042
8: 0 0 0 1 IO-APIC-edge rtc0
9: 0 0 0 0 IO-APIC-fasteoi acpi
...
<cut>
With data of offline cpu(cpu#2) hiden, the output is like below:
<cut>
crash> irq -s
irq: CPU2 is OFFLINE.
CPU0 CPU1 CPU3
0: 111 1 0 IO-APIC-edge timer
1: 71 149 155 IO-APIC-edge i8042
8: 0 0 1 IO-APIC-edge rtc0
9: 0 0 0 IO-APIC-fasteoi acpi
...
<cut>
Signed-off-by: Qiao Nuohan <[email protected]>
---
kernel.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/kernel.c b/kernel.c
index 560b292..758edcf 100755
--- a/kernel.c
+++ b/kernel.c
@@ -5622,9 +5622,18 @@ cmd_irq(void)
SET_BIT(cpus, i);
}
+ for (i = 0; i < kt->cpus; i++) {
+ if (NUM_IN_BITMAP(cpus, i) && hide_offline_cpu(i))
+ error(INFO, "CPU%d is OFFLINE.\n", i);
+ }
+
fprintf(fp, " ");
BZERO(buf, 10);
+
for (i = 0; i < kt->cpus; i++) {
+ if (hide_offline_cpu(i))
+ continue;
+
if (NUM_IN_BITMAP(cpus, i)) {
sprintf(buf, "CPU%d", i);
fprintf(fp, "%10s ", buf);
@@ -6422,6 +6431,9 @@ generic_show_interrupts(int irq, ulong *cpus)
fprintf(fp, "%3d: ", irq);
for (i = 0; i < kt->cpus; i++) {
+ if (hide_offline_cpu(i))
+ continue;
+
if (NUM_IN_BITMAP(cpus, i))
fprintf(fp, "%10u ", kstat_irqs[i]);
}
--
1.8.5.3
--
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