Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit fc7e1e4b authored by Heiko Carstens's avatar Heiko Carstens Committed by Martin Schwidefsky
Browse files

[S390] dont use kthread for smp_rescan_cpus(). 



Since git commit 3da1c84c
"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: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 26f746f3

drivers/s390/char/sclp_config.c

+1 −12
Original line number Diff line number Diff line
@@ -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)