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[S390] smp: always reboot on cpu 0

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Always reboot on logical cpu 0. This makes sure that the IPL cpu is
always the same and usually avoids strange numbering schemes between
physical and logical cpus.

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
2010-02-26 22:37:34 +01:00
committed by Martin Schwidefsky
parent abd1ecf209
commit 2c2df118a6
7 changed files with 191 additions and 11 deletions
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31
arch/s390/kernel/ipl.c
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@ -553,7 +553,7 @@ out:
return rc;
}
static void ipl_run(struct shutdown_trigger *trigger)
static void __ipl_run(void *unused)
{
diag308(DIAG308_IPL, NULL);
if (MACHINE_IS_VM)
@ -562,6 +562,11 @@ static void ipl_run(struct shutdown_trigger *trigger)
reipl_ccw_dev(&ipl_info.data.ccw.dev_id);
}
static void ipl_run(struct shutdown_trigger *trigger)
{
smp_switch_to_ipl_cpu(__ipl_run, NULL);
}
static int __init ipl_init(void)
{
int rc;
@ -1039,7 +1044,7 @@ static void get_ipl_string(char *dst, struct ipl_parameter_block *ipb,
sprintf(dst + pos, " PARM %s", vmparm);
}
static void reipl_run(struct shutdown_trigger *trigger)
static void __reipl_run(void *unused)
{
struct ccw_dev_id devid;
static char buf[128];
@ -1087,6 +1092,11 @@ static void reipl_run(struct shutdown_trigger *trigger)
disabled_wait((unsigned long) __builtin_return_address(0));
}
static void reipl_run(struct shutdown_trigger *trigger)
{
smp_switch_to_ipl_cpu(__reipl_run, NULL);
}
static void reipl_block_ccw_init(struct ipl_parameter_block *ipb)
{
ipb->hdr.len = IPL_PARM_BLK_CCW_LEN;
@ -1369,20 +1379,18 @@ static struct kobj_attribute dump_type_attr =
static struct kset *dump_kset;
static void dump_run(struct shutdown_trigger *trigger)
static void __dump_run(void *unused)
{
struct ccw_dev_id devid;
static char buf[100];
switch (dump_method) {
case DUMP_METHOD_CCW_CIO:
smp_send_stop();
devid.devno = dump_block_ccw->ipl_info.ccw.devno;
devid.ssid = 0;
reipl_ccw_dev(&devid);
break;
case DUMP_METHOD_CCW_VM:
smp_send_stop();
sprintf(buf, "STORE STATUS");
__cpcmd(buf, NULL, 0, NULL);
sprintf(buf, "IPL %X", dump_block_ccw->ipl_info.ccw.devno);
@ -1396,10 +1404,17 @@ static void dump_run(struct shutdown_trigger *trigger)
diag308(DIAG308_SET, dump_block_fcp);
diag308(DIAG308_DUMP, NULL);
break;
case DUMP_METHOD_NONE:
return;
default:
break;
}
printk(KERN_EMERG "Dump failed!\n");
}
static void dump_run(struct shutdown_trigger *trigger)
{
if (dump_method == DUMP_METHOD_NONE)
return;
smp_send_stop();
smp_switch_to_ipl_cpu(__dump_run, NULL);
}
static int __init dump_ccw_init(void)