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authorHeiko Carstens <heiko.carstens@de.ibm.com>2006-12-04 15:40:33 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2006-12-04 15:40:33 +0100
commitc6b5b847a7cf11f131c43fe0041443ec11697fc7 (patch)
treed15fb7302bd446394ab373128be0a77826566e30 /arch/s390/kernel/ipl.c
parent740b5706b9c4b3767f597b3ea76654c6f2a800b2 (diff)
[S390] cpu shutdown rework
Let one master cpu kill all other cpus instead of sending an external interrupt to all other cpus so they can kill themselves. Simplifies reipl/shutdown functions a lot. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/ipl.c')
-rw-r--r--arch/s390/kernel/ipl.c24
1 files changed, 2 insertions, 22 deletions
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index 101b003cfab..a36bea1188d 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -576,23 +576,6 @@ static struct subsys_attribute dump_type_attr =
static decl_subsys(dump, NULL, NULL);
-#ifdef CONFIG_SMP
-static void dump_smp_stop_all(void)
-{
- int cpu;
- preempt_disable();
- for_each_online_cpu(cpu) {
- if (cpu == smp_processor_id())
- continue;
- while (signal_processor(cpu, sigp_stop) == sigp_busy)
- udelay(10);
- }
- preempt_enable();
-}
-#else
-#define dump_smp_stop_all() do { } while (0)
-#endif
-
/*
* Shutdown actions section
*/
@@ -724,13 +707,13 @@ static void do_dump(void)
switch (dump_method) {
case IPL_METHOD_CCW_CIO:
- dump_smp_stop_all();
+ smp_send_stop();
devid.devno = dump_block_ccw->ipl_info.ccw.devno;
devid.ssid = 0;
reipl_ccw_dev(&devid);
break;
case IPL_METHOD_CCW_VM:
- dump_smp_stop_all();
+ smp_send_stop();
sprintf(buf, "STORE STATUS");
__cpcmd(buf, NULL, 0, NULL);
sprintf(buf, "IPL %X", dump_block_ccw->ipl_info.ccw.devno);
@@ -1059,9 +1042,6 @@ void s390_reset_system(void)
{
struct _lowcore *lc;
- /* Disable all interrupts/machine checks */
- __load_psw_mask(PSW_KERNEL_BITS & ~PSW_MASK_MCHECK);
-
/* Stack for interrupt/machine check handler */
lc = (struct _lowcore *)(unsigned long) store_prefix();
lc->panic_stack = S390_lowcore.panic_stack;