[S390] dont use kthread for smp_rescan_cpus().
Since git commit 3da1c84c00c7e5fa8348336bd8c342f9128b0f14
"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>
diff --git a/drivers/s390/char/sclp_config.c b/drivers/s390/char/sclp_config.c
index fff4ff4..4cebd6e 100644
--- a/drivers/s390/char/sclp_config.c
+++ b/drivers/s390/char/sclp_config.c
@@ -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 @@
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)