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[S390] cpcmd <-> __cpcmd calling issues

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In case of reipl cpcmd gets called when all other cpus are not running
anymore. To prevent deadlocks change __cpcmd so that it doesn't take
any locks and call cpcmd or __cpcmd, whatever is correct in the current
context.

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
2006-12-04 15:40:30 +01:00
committed by Martin Schwidefsky
parent a1a392f0b4
commit 740b5706b9
4 changed files with 24 additions and 24 deletions
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10
arch/s390/kernel/ipl.c
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@@ -677,7 +677,7 @@ void do_reipl(void)
else
sprintf(buf, "IPL %X LOADPARM '%s'",
reipl_block_ccw->ipl_info.ccw.devno, loadparm);
cpcmd(buf, NULL, 0, NULL);
__cpcmd(buf, NULL, 0, NULL);
break;
case IPL_METHOD_CCW_DIAG:
diag308(DIAG308_SET, reipl_block_ccw);
@@ -691,12 +691,12 @@ void do_reipl(void)
diag308(DIAG308_IPL, NULL);
break;
case IPL_METHOD_FCP_RO_VM:
cpcmd("IPL", NULL, 0, NULL);
__cpcmd("IPL", NULL, 0, NULL);
break;
case IPL_METHOD_NONE:
default:
if (MACHINE_IS_VM)
cpcmd("IPL", NULL, 0, NULL);
__cpcmd("IPL", NULL, 0, NULL);
diag308(DIAG308_IPL, NULL);
break;
}
@@ -732,9 +732,9 @@ static void do_dump(void)
case IPL_METHOD_CCW_VM:
dump_smp_stop_all();
sprintf(buf, "STORE STATUS");
cpcmd(buf, NULL, 0, NULL);
__cpcmd(buf, NULL, 0, NULL);
sprintf(buf, "IPL %X", dump_block_ccw->ipl_info.ccw.devno);
cpcmd(buf, NULL, 0, NULL);
__cpcmd(buf, NULL, 0, NULL);
break;
case IPL_METHOD_CCW_DIAG:
diag308(DIAG308_SET, dump_block_ccw);