From: Martin Schwidefsky <schwidefsky@de.ibm.com>
To: linux-kernel@vger.kernel.org, heiko.carstens@de.ibm.com
Subject: [S390] Fix cpu hotplug (missing 'online' attribute).
Date: Sun, 7 Jan 2007 11:43:43 +0100 [thread overview]
Message-ID: <20070107104343.GC14724@skybase> (raw)
From: Heiko Carstens <heiko.carstens@de.ibm.com>
[S390] Fix cpu hotplug (missing 'online' attribute).
72486f1f8f0a2bc828b9d30cf4690cf2dd6807fc inverts the logic if an
'online' attribute in /sys/devices/system/cpu/cpuX should appear.
So we end up with no hotpluggable cpus at all...
Set the hotpluggable value to one to make sure the online
attribute appears again.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
arch/s390/kernel/smp.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletion(-)
diff -urpN linux-2.6/arch/s390/kernel/smp.c linux-2.6-patched/arch/s390/kernel/smp.c
--- linux-2.6/arch/s390/kernel/smp.c 2007-01-06 15:20:00.000000000 +0100
+++ linux-2.6-patched/arch/s390/kernel/smp.c 2007-01-06 15:20:32.000000000 +0100
@@ -794,7 +794,10 @@ static int __init topology_init(void)
int ret;
for_each_possible_cpu(cpu) {
- ret = register_cpu(&per_cpu(cpu_devices, cpu), cpu);
+ struct cpu *c = &per_cpu(cpu_devices, cpu);
+
+ c->hotpluggable = 1;
+ ret = register_cpu(c, cpu);
if (ret)
printk(KERN_WARNING "topology_init: register_cpu %d "
"failed (%d)\n", cpu, ret);
reply other threads:[~2007-01-07 10:43 UTC|newest]
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