2007-04-27 08:01:56 -06:00
|
|
|
/*
|
|
|
|
* Copyright IBM Corp. 2007
|
|
|
|
* Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>
|
|
|
|
*/
|
|
|
|
|
2008-12-25 05:39:48 -07:00
|
|
|
#define KMSG_COMPONENT "sclp_config"
|
|
|
|
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
|
|
|
|
|
2007-04-27 08:01:56 -06:00
|
|
|
#include <linux/init.h>
|
|
|
|
#include <linux/errno.h>
|
|
|
|
#include <linux/cpu.h>
|
2011-12-21 15:29:42 -07:00
|
|
|
#include <linux/device.h>
|
2007-04-27 08:01:56 -06:00
|
|
|
#include <linux/workqueue.h>
|
2008-04-30 05:38:37 -06:00
|
|
|
#include <asm/smp.h>
|
2007-04-27 08:01:56 -06:00
|
|
|
|
2008-12-25 05:39:48 -07:00
|
|
|
#include "sclp.h"
|
2007-04-27 08:01:56 -06:00
|
|
|
|
|
|
|
struct conf_mgm_data {
|
|
|
|
u8 reserved;
|
|
|
|
u8 ev_qualifier;
|
|
|
|
} __attribute__((packed));
|
|
|
|
|
2008-04-30 05:38:37 -06:00
|
|
|
#define EV_QUAL_CPU_CHANGE 1
|
2007-04-27 08:01:56 -06:00
|
|
|
#define EV_QUAL_CAP_CHANGE 3
|
|
|
|
|
|
|
|
static struct work_struct sclp_cpu_capability_work;
|
2008-04-30 05:38:37 -06:00
|
|
|
static struct work_struct sclp_cpu_change_work;
|
2007-04-27 08:01:56 -06:00
|
|
|
|
|
|
|
static void sclp_cpu_capability_notify(struct work_struct *work)
|
|
|
|
{
|
|
|
|
int cpu;
|
2011-12-21 15:29:42 -07:00
|
|
|
struct device *dev;
|
2007-04-27 08:01:56 -06:00
|
|
|
|
2011-01-05 04:48:18 -07:00
|
|
|
s390_adjust_jiffies();
|
2008-12-25 05:39:48 -07:00
|
|
|
pr_warning("cpu capability changed.\n");
|
2008-01-25 13:08:02 -07:00
|
|
|
get_online_cpus();
|
2007-04-27 08:01:56 -06:00
|
|
|
for_each_online_cpu(cpu) {
|
2011-12-21 15:29:42 -07:00
|
|
|
dev = get_cpu_device(cpu);
|
|
|
|
kobject_uevent(&dev->kobj, KOBJ_CHANGE);
|
2007-04-27 08:01:56 -06:00
|
|
|
}
|
2008-01-25 13:08:02 -07:00
|
|
|
put_online_cpus();
|
2007-04-27 08:01:56 -06:00
|
|
|
}
|
|
|
|
|
2008-07-14 01:57:28 -06:00
|
|
|
static void __ref sclp_cpu_change_notify(struct work_struct *work)
|
|
|
|
{
|
2008-08-01 08:39:23 -06:00
|
|
|
smp_rescan_cpus();
|
2008-04-30 05:38:37 -06:00
|
|
|
}
|
|
|
|
|
2007-04-27 08:01:56 -06:00
|
|
|
static void sclp_conf_receiver_fn(struct evbuf_header *evbuf)
|
|
|
|
{
|
|
|
|
struct conf_mgm_data *cdata;
|
|
|
|
|
|
|
|
cdata = (struct conf_mgm_data *)(evbuf + 1);
|
2008-04-30 05:38:37 -06:00
|
|
|
switch (cdata->ev_qualifier) {
|
|
|
|
case EV_QUAL_CPU_CHANGE:
|
|
|
|
schedule_work(&sclp_cpu_change_work);
|
|
|
|
break;
|
|
|
|
case EV_QUAL_CAP_CHANGE:
|
2007-04-27 08:01:56 -06:00
|
|
|
schedule_work(&sclp_cpu_capability_work);
|
2008-04-30 05:38:37 -06:00
|
|
|
break;
|
|
|
|
}
|
2007-04-27 08:01:56 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
static struct sclp_register sclp_conf_register =
|
|
|
|
{
|
|
|
|
.receive_mask = EVTYP_CONFMGMDATA_MASK,
|
|
|
|
.receiver_fn = sclp_conf_receiver_fn,
|
|
|
|
};
|
|
|
|
|
|
|
|
static int __init sclp_conf_init(void)
|
|
|
|
{
|
|
|
|
INIT_WORK(&sclp_cpu_capability_work, sclp_cpu_capability_notify);
|
2008-04-30 05:38:37 -06:00
|
|
|
INIT_WORK(&sclp_cpu_change_work, sclp_cpu_change_notify);
|
2011-05-23 02:24:37 -06:00
|
|
|
return sclp_register(&sclp_conf_register);
|
2007-04-27 08:01:56 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
__initcall(sclp_conf_init);
|