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[S390] dont use kthread for smp_rescan_cpus(). 

Since git commit 3da1c84c00
"workqueues: make get_online_cpus() useable for work->func()"
it is safe to call get_online_cpus() from workqueue context.
So remove the kthread workaround again.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens 2008-08-01 16:39:23 +02:00 committed by Martin Schwidefsky
parent 26f746f3e3
commit fc7e1e4b1c
1 changed files with 1 additions and 12 deletions
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13
drivers/s390/char/sclp_config.c
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@ -8,7 +8,6 @@
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/cpu.h>
#include <linux/kthread.h>
#include <linux/sysdev.h>
#include <linux/workqueue.h>
#include <asm/smp.h>
@ -41,19 +40,9 @@ static void sclp_cpu_capability_notify(struct work_struct *work)
put_online_cpus();
}
static int sclp_cpu_kthread(void *data)
{
smp_rescan_cpus();
return 0;
}
static void __ref sclp_cpu_change_notify(struct work_struct *work)
{
/* Can't call smp_rescan_cpus() from workqueue context since it may
* deadlock in case of cpu hotplug. So we have to create a kernel
* thread in order to call it.
*/
kthread_run(sclp_cpu_kthread, NULL, "cpu_rescan");
smp_rescan_cpus();
}
static void sclp_conf_receiver_fn(struct evbuf_header *evbuf)