2 * drivers/s390/char/sclp_config.c
4 * Copyright IBM Corp. 2007
5 * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>
8 #include <linux/init.h>
9 #include <linux/errno.h>
10 #include <linux/cpu.h>
11 #include <linux/sysdev.h>
12 #include <linux/workqueue.h>
16 #define TAG "sclp_config: "
18 struct conf_mgm_data
{
21 } __attribute__((packed
));
23 #define EV_QUAL_CPU_CHANGE 1
24 #define EV_QUAL_CAP_CHANGE 3
26 static struct work_struct sclp_cpu_capability_work
;
27 static struct work_struct sclp_cpu_change_work
;
29 static void sclp_cpu_capability_notify(struct work_struct
*work
)
32 struct sys_device
*sysdev
;
34 printk(KERN_WARNING TAG
"cpu capability changed.\n");
36 for_each_online_cpu(cpu
) {
37 sysdev
= get_cpu_sysdev(cpu
);
38 kobject_uevent(&sysdev
->kobj
, KOBJ_CHANGE
);
43 static void sclp_cpu_change_notify(struct work_struct
*work
)
48 static void sclp_conf_receiver_fn(struct evbuf_header
*evbuf
)
50 struct conf_mgm_data
*cdata
;
52 cdata
= (struct conf_mgm_data
*)(evbuf
+ 1);
53 switch (cdata
->ev_qualifier
) {
54 case EV_QUAL_CPU_CHANGE
:
55 schedule_work(&sclp_cpu_change_work
);
57 case EV_QUAL_CAP_CHANGE
:
58 schedule_work(&sclp_cpu_capability_work
);
63 static struct sclp_register sclp_conf_register
=
65 .receive_mask
= EVTYP_CONFMGMDATA_MASK
,
66 .receiver_fn
= sclp_conf_receiver_fn
,
69 static int __init
sclp_conf_init(void)
73 INIT_WORK(&sclp_cpu_capability_work
, sclp_cpu_capability_notify
);
74 INIT_WORK(&sclp_cpu_change_work
, sclp_cpu_change_notify
);
76 rc
= sclp_register(&sclp_conf_register
);
78 printk(KERN_ERR TAG
"failed to register (%d).\n", rc
);
82 if (!(sclp_conf_register
.sclp_send_mask
& EVTYP_CONFMGMDATA_MASK
)) {
83 printk(KERN_WARNING TAG
"no configuration management.\n");
84 sclp_unregister(&sclp_conf_register
);
90 __initcall(sclp_conf_init
);