From: Liping Zhang <zlpnob...@gmail.com>
On our 4-core system, sometimes I can enable all CPUs to process packets.
But sometimes I can't, if all the CPUs become offline except core 0, I
will get the following result, which is really annoying for my script:
# echo f > /sys/class/net/eth0/queues/rx-0/rps_cpus
# cat /sys/class/net/eth0/queues/rx-0/rps_cpus
1
Since we won't steer the packets to these offline cpus, it's reasonable
to enable all configed cpus to the rps_map, even if they are offline for
the time being.
Signed-off-by: Liping Zhang <zlpnob...@gmail.com>
---
net/core/net-sysfs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index 65ea0ff..8adb36d 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -731,7 +731,7 @@ static ssize_t store_rps_map(struct netdev_rx_queue *queue,
}
i = 0;
- for_each_cpu_and(cpu, mask, cpu_online_mask)
+ for_each_cpu_and(cpu, mask, cpu_possible_mask)
map->cpus[i++] = cpu;
if (i)
--
2.9.3
